2010-04-09 Tracking News

Contents on 9 April '10

IAU Minor Planet Center
- NEOCP Activity -- 16 listings: 16 updated
- New MPECs -- 20 MPECs
Observers -- 98 observing facilities
Impact Risk Monitoring -- six objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood Traffic Report
Ephemerides for risk-rated and nearby objects
News image catalog
Old & new CRT Archive
Old News Archive & Small Objects Archive

The latest A/CC news is available via framed access, RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

NEOCP Activity on 9 April '10

The MPC's NEO Confirmation Page has 16 listings: 16 updated

When last checked at 1235 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had sixteen updated listings. Of these, seven were "one nighters."

New MPECs on 9 April '10

Minor Planet Electronic Circulars

There were 20 MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-G52 time-stamped "06:09 UT" - Daily Orbit Update - see below
MPEC 2010-G53 time-stamped "12:25 UT" - 2010 DE - see below
MPEC 2010-G54 time-stamped "12:28 UT" - 2010 FF10 - see below
MPEC 2010-G55 time-stamped "12:40 UT" - 2010 GU21 - see below
MPEC 2010-G56 time-stamped "14:08 UT" - 2010 EL139 - see below
MPEC 2010-G57 time-stamped "14:43 UT" - 2010 FX86 - see below
MPEC 2010-G58 time-stamped "15:13 UT" - 2010 GJ23 - see below
MPEC 2010-G59 time-stamped "15:20 UT" - 2010 GK23 - see below
MPEC 2010-G60 time-stamped "15:40 UT" - 2010 GL23 - see below
MPEC 2010-G61 time-stamped "15:46 UT" - 2010 GM23 - see below
MPEC 2010-G62 time-stamped "16:21 UT" - 2007 ML13 - see below
MPEC 2010-G63 time-stamped "17:28 UT" - Comet C/2009 O2 (Catalina) - see below
MPEC 2010-G64 time-stamped "17:39 UT" - Comet P/2010 C1 (Scotti) - see below
MPEC 2010-G65 time-stamped "17:46 UT" - Comet P/2010 D2 (WISE) - see below
MPEC 2010-G66 time-stamped "17:57 UT" - Comet C/2010 E1 (Garradd) - see below
MPEC 2010-G67 time-stamped "18:02 UT" - Comet P/2010 E2 (Jarnac) - see below
MPEC 2010-G68 time-stamped "18:09 UT" - Comet C/2010 F1 (Boattini) - see below
MPEC 2010-G69 time-stamped "18:14 UT" - Comet C/2010 F3 (Scotti) - see below
MPEC 2010-G70 time-stamped "18:29 UT" - Observations of Comets - see below
MPEC 2010-G71 time-stamped "22:49 UT" - Comet C/2010 D4 (WISE)

MPEC 2010-G71 - "22:49 UT" - Comet C/2010 D4 (WISE)

CK10D040 C/2010 D4 (WISE) (i=105.7°, q=7.147 AU, Q=127.890 AU, TP=2009 Mar. 29.8732 TT) from Terskol Obs. (March 31.96p1) and Cielo Profundo Obs. (April 9.10-15p3)

MPEC 2010-G70 - "18:29 UT" - Observations of Comets

CK10B010 C/2010 B1 (Cardinal) from Posadas Obs. (April 4.88-89p3), Castelmartini Obs. (April 5.80p3), Petit Jean Mtn. South Obs. (PJMSO) (April 6.09-11p7, 8.10-11p7 & 9.08-09p6), and Sendai Obs. (April 7.45-46p3)
PK10A050 P/2010 A5 (LINEAR) from Monte Deva Obs. (April 5.13-15p5), Farm Cove Obs. (April 7.53-54p3 & 8.71-72p3), and Sendai Obs. (April 8.70-71p3)
CK10A040 C/2010 A4 (Siding Spring) from Kambah Obs. (March 17.47p2), Geisei Obs. (March 17.50-51p2), Farm Cove Obs. (April 8.32-33p3), and Auckland Obs. (April 8.40-41p3)
PK10A030 P/2010 A3 (Hill) from Moriyama Obs. (April 3.47-48p2), Ageo Obs. (April 3.48-49p2), Posadas Obs. (April 4.86-87p3 & 7.88p3), the Catalina Sky Survey (CSS) (April 6.14-15p5), Stixendorf Obs. (April 6.82-84p6), Sendai Obs. (April 7.44p3), PJMSO (April 8.09-10p7 & 9.09-10p7), and RAS Obs. Mayhill (April 8.12-13p3)
CK09U050 C/2009 U5 (Grauer) from Buchloe Obs. (April 2.89-90p3) and PJMSO (April 6.14-16p4)
CK09U030 C/2009 U3 (Hill) from Ageo Obs. (April 3.55-56p2) and Stixendorf Obs. (April 6.86-88p6)
PK09Q040 P/2009 Q4 (Boattini) from LINEAR (April 6.24-29p5) and RAS Mayhill (April 9.17-18p3)
CK09K050 C/2009 K5 (McNaught) from Terskol Obs. (April 1.05p8), Yatsuka Obs. (April 2.82p3), Kurihara Obs. (April 3.75-76p4 & 7.78-79p2), Zonalunar Obs. (April 5.03-04p3 & 9.04p1), Monte Deva Obs. (April 5.05-06p5), LINEAR (April 5.45-47p3), Cielo Profundo Obs. (April 6.11-14p3), Casal Lumbroso Obs. (April 6.13-15p15), Altamira Obs. (April 6.20p3), Buchloe Obs. (April 6.98-99p3), Tzec Maun Obs. Mayhill (April 7.46p3 & 8.36-37p3), Brixiis Obs. (April 9.01-03p8), Maisoncelles Obs. (April 9.11-12p6), and Chante-Perdrix Obs. (April 9.13-14p2)
CK09F020 C/2009 F2 (McNaught) from LINEAR (March 25.35-39p4) and Buchloe Obs. (April 6.95p3)
CK08Q030 C/2008 Q3 (Garradd) from Ageo Obs. (March 30.70-71p2), Moriyama Obs. (April 3.68-69p2), Pear Tree Obs. (April 4.08-10p3), and PJMSO (April 6.24-25p6)
CK08Q010 C/2008 Q1 (Maticic) from the Mt. Lemmon Survey (MLS) (March 25.27-39p12) and Buchloe Obs. (April 6.92p3)
CK08N010 C/2008 N1 (Holmes) from Betelgeuse Station (April 2.08p2), El Olivo Obs. (April 2.99p3), Moriyama Obs. (April 3.75-76p2), PJMSO (April 4.34-35p6, 8.24-25p5 & 9.40-41p6), LINEAR (April 5.30-34p5), and Altamira Obs. (April 6.07-09p3)
CK08F75K C/2008 FK75 (Lemmon-Siding Spring) from Schiaparelli Obs. (March 31.11-12p2), Terskol Obs. (March 31.98-99p3), Betelgeuse Sta. (April 2.06-07p3), Monte Deva Obs. (April 5.07-08p5), Cielo Profundo Obs. (April 5.08-09p3), Altamira Obs. (April 6.18-19p3), Inastars Obs. (April 6.93-94p4), Sendai Obs. (April 7.76p3 & 8.74p3), and El Maestrat Obs. (April 9.04-05p3)
CK07V53O C/2007 VO53 (Spacewatch) from Buchloe Obs. (March 7.79p3) and Ageo Obs. (March 30.75p2)
CK07S020 C/2007 S2 (Lemmon) from the Siding Spring Survey (SSS) (March 18.55-59p4) and Buchloe Obs. (April 6.93p3)
CK07Q03b C/2007 Q3-B (Siding Spring B) from Faulkes Telescope North (April 2.51-54p5), Pla D'Arguines Obs. (April 4.00-01p3), and Maisoncelles Obs. (April 9.03-06p3)
CK07Q03a C/2007 Q3-A (Siding Spring A) from Nazaret Obs. (March 14.19-21p4 & April 7.05-09p3), Gualba Obs. (March 30.96p2), Casasco Obs. (March 31.93-97p2), Terskol Obs. (March 31.99-00p7), Betelgeuse Sta. (April 2.06p3), Faulkes North (April 2.51-54p5), Pla D'Arguines Obs. (April 2.94-98p3 & 4.00-01p3), Alginet Obs. (April 2.94p3), Kurihara Obs. (April 3.50p3), Moriyama Obs. (April 3.77-78p2), PJMSO (April 4.41-42p6, 6.29-30p6 & 9.41-42p6), Tzec Maun Obs. Mayhill (April 4.45-46p5), Paus Obs. (April 4.91-95p3), Montcabre Obs. (April 4.96-98p3), Berta Obs. (April 4.97-00p3), El Maestrat Obs. (April 5.02-07p9 & 8.00-03p7), Cielo Profundo Obs. (April 5.06-07p2 & 8.04-06p3), Monte Deva Obs. (April 5.09-10p5 & 9.08-09p5), Chante-Perdrix Obs. (April 5.85-86p3), Altamira Obs. (April 6.01-04p3), Casal Lumbroso Obs. (April 6.07-11p12), Brixiis Obs. (April 6.85-87p7), Buchloe Obs. (April 7.00p3), Sendai Obs. (April 7.78p3 & 8.69p3), La Axarquia Obs. (April 7.94-96p3), Mt. Tuffley Obs. (April 7.95p3), Zonalunar Obs. (April 8.90p1), and Maisoncelles Obs. (April 9.03-07p13)
CK07M010 C/2007 M1 (McNaught) from CSS (March 25.47-49p4), Pla D'Arguines Obs. (April 5.11-14p4), Nazaret Obs. (April 7.16-18p3), and Cielo Profundo Obs. (April 8.07-09p3)
CK07D010 C/2007 D1 (LINEAR) from Moriyama Obs. (April 5.65-66p2 & 7.70-71p2) and Buchloe Obs. (April 6.91p2)
CK06W030 C/2006 W3 (Christensen) from Ageo Obs. (March 30.78-79p2) and Kurihara Obs. (April 3.78p1)
CK06Q010 C/2006 Q1 (McNaught) from Schiaparelli Obs. (March 31.12-13p2), Terskol Obs. (April 1.03p4), LINEAR (April 4.41-46p5), and Cielo Profundo Obs. (April 6.07-09p3)
CK06O02F C/2006 OF2 (Broughton) from Vicksburg Obs. (April 2.18-21p3) and Tzec Maun Obs. Mayhill (April 9.24-25p3)
CK05L030 C/2005 L3 (McNaught) from Vicksburg Obs. (April 2.24-28p3), El Olivo Obs. (April 2.00p3), Posadas Obs. (April 3.02p3), Cielo Profundo Obs. (April 3.94-95p3), PJMSO (April 4.40-41p6), Atlante Obs. (April 5.95-96p2), Maidbronn Obs. (April 6.02-04p4), Cordell-Lorenz Obs. (April 7.30p1 & 7.35p1), Tzec Maun Obs. Mayhill (April 7.44p1), Sendai Obs. (April 7.77-78p3 & 8.68p3), and Jaen Obs. (April 8.87-88p2)
0235P 235P/LINEAR from Tzec Maun Obs. Moorook (April 3.47-50p3), Cielo Profundo Obs. (April 4.94-95p3), and LINEAR (April 7.30-35p5)
0234P 234P/LINEAR from CSS (April 4.35-37p4) and La Sagra Obs. (April 4.91-93p3)
0232P 232P/Hill from Buchloe Obs. (March 23.87p2 & April 7.89p1)
0203P 203P/Korlevic from LINEAR (April 6.12-17p5 & 8.12-17p5)
0169P 169P/NEAT from Grove Creek Obs. (March 20.42-44p2), Moriyama Obs. (March 30.57p2), Maidbronn Obs. (April 5.88p3), and LINEAR (April 7.26-29p3)
0157P 157P/Tritton from El Maestrat Obs. (April 2.83-85p2), PJMSO (April 6.12p5), LINEAR (April 6.12-17p5 & 7.12-17p5), Stixendorf Obs. (April 7.85-86p2), and RAS Mayhill (April 9.15-16p2)
0149P 149P/Mueller 4 from Terskol Obs. (April 1.01p3), CSS (April 4.43-45p4), and Altamira Obs. (April 6.10-12p3)
0118P 118P/Shoemaker-Levy 4 from Nazaret Obs. (March 16.84-85p3, 21.83-84p3, 29.87-89p3 & April 5.85-87p3), Stixendorf Obs. (April 2.86-87p3), Posadas Obs. (April 2.94-95p3), Moriyama Obs. (April 3.51p2), Monte Deva Obs. (April 4.92p5 & 5.99-00p5), Vicksburg Obs. (April 5.06-07p3), Atlante Obs. (April 5.86-88p3), Altamira Obs. (April 5.96-97p3), PJMSO (April 6.12-13p6, 8.12p3 & 9.10-11p6), LINEAR (April 7.18-23p5), Sendai Obs. (April 7.47p3), and Zonalunar Obs. (April 8.84p1)
0094P 94P/Russell 4 from Terskol Obs. (April 1.02p3), El Olivo Obs. (April 2.97p3), Posadas Obs. (April 2.99p3), Vicksburg Obs. (April 3.09-11p3 & 6.18-20p4), Nagano Obs. (April 3.48-49p2), Moriyama Obs. (April 3.55-56p2 & 5.57-58p2), Monte Deva Obs. (April 4.98-99p5, 6.03-05p5 & 9.02-03p4), Castelmartini Obs. (April 5.94p3), PJMSO (April 6.21-22p6), Sierra Stars Obs. (April 7.19-23p5), Sendai Obs. (April 7.53-54p3), and Stixendorf Obs. (April 7.87-88p3)
0081P 81P/Wild 2 from AAAA Buenos Aires Obs. (March 24.22-24p2), Alginet Obs. (April 2.91p2), Kurihara Obs. (April 3.52-53p4), Moriyama Obs. (April 3.73-74p2), PJMSO (April 4.37-38p6, 6.27-29p6 & 9.39-40p6), Tzec Maun Obs. Mayhill (April 4.47-49p5), Blanquita Obs. (April 4.91-92p3), Zonalunar Obs. (April 4.93p1, 9.07-11p2 & 9.16p1), Sabadell Obs. (April 4.95p3), Montcabre Obs. (April 4.99-00p3), Berta Obs. (April 5.01-05p3), Monte Deva Obs. (April 5.03-04p5 & 9.07-08p5), Capannoli Obs. (April 5.97p3), La Vara Obs. (April 6.00-01p3), Casal Lumbroso Obs. (April 6.03-06p8), Atlante Obs. (April 6.05-06p3), Maidbronn Obs. (April 6.07-11p4), Cordell-Lorenz Obs. (April 6.34-38p3), Montelupo Obs. (April 6.91-92p2), Nazaret Obs. (April 7.02-04p3), Sendai Obs. (April 7.76-77p3 & 8.67p3), La Axarquia Obs. (April 7.92-93p3), Mt. Tuffley Obs. (April 7.94p3), Cielo Profundo Obs. (April 8.02-04p3), Brixiis Obs. (April 8.98-00p8), Linceo Obs. (April 8.99-01p3), El Maestrat Obs. (April 9.07-09p4), Maisoncelles Obs. (April 9.09-11p5), and the Spacewatch 0.9m telescope (April 9.24-28p3)
0074P 74P/Smirnova-Chernykh from Alginet Obs. (April 2.93p3), Moriyama Obs. (April 3.70-72p2), CSS (April 4.35-37p4), PJMSO (April 4.35-37p7), Blanquita Obs. (April 4.89-91p3), Monte Deva Obs. (April 5.01-03p5, 6.06-09p5 & 9.04-06p5), Montelupo Obs. (April 6.92p2), La Axarquia Obs. (April 7.90-92p3), and Sendai Obs. (April 8.70p3)
0031P 31P/Schwassmann-Wachmann 2 from Castelmartini Obs. (March 16.81p3), Chante-Perdrix Obs. (April 4.83-84p3), and Buchloe Obs. (April 7.84p3)
0030P 30P/Reinmuth 1 from Remanzacco Obs. (April 2.82p2), Stixendorf Obs. (April 2.85p4), Monte Deva Obs. (April 4.90-91p4), LINEAR (April 6.13-17p5 & 8.13-17p5), Corner Obs. (April 6.84-89p3), and PJMSO (April 8.11-12p6)
0029P 29P/Schwassmann-Wachmann 1 from Nazaret Obs. (March 13.89-91p4, 16.93-94p3, 21.88-92p4, 22.85-89p6, 23.86-88p3, April 2.97-00p3 & 5.88-89p3), Corner Obs. (March 22.91-94p2), Gualba Obs. (March 29.81p2, 31.87p1 & April 4.84-86p2), Yatsuka Obs. (March 30.48p3), SPAG Monfrague Obs. (April 1.94-98p3), Vicksburg Obs. (April 2.11-16p3, 4.11-14p3, 5.13p1, 5.17-18p2 & 6.13-16p2), Masquefa Obs. (April 2.84-87p3 & 4.82-85p3), Stixendorf Obs. (April 2.88-90p3), Alginet Obs. (April 2.89-90p3), El Olivo Obs. (April 2.91p3), Posadas Obs. (April 2.96-97p3, 4.97-99p3 & 7.93-95p3), PJMSO (April 4.31-32p4, 6.16-18p5 & 8.13-16p5), Montcabre Obs. (April 4.83-86p3), Monte Deva Obs. (April 4.94-96p5 & 6.01-03p5), Atlante Obs. (April 5.91-94p2), La Vara Obs. (April 5.95-96p3), Sendai Obs. (April 7.47p3 & 8.62p3), Hyperion Obs. (April 7.99-05p3), Cordell-Lorenz Obs. (April 8.11-14p3), and Linceo Obs. (April 8.83-86p3)
0010P 10P/Tempel 2 from Ageo Obs. (March 21.78p2 & 29.77-78p2), Cielo Profundo Obs. (April 5.16-18p3 & 6.16-18p3), Chante-Perdrix Obs. (April 9.15-17p3), and Maisoncelles Obs. (April 9.16-17p5)

MPEC 2010-G69 - "18:14 UT" - Comet C/2010 F3 (Scotti)

CK10F030 C/2010 F3 (Scotti) (i=4.4°, q=5.206 AU, TP=2010 Oct. 8.052 TT) from Terskol Obs. (April 2.74-75p4), Pla D'Arguines Obs. (April 4.89-90p3), Schiaparelli Obs. (April 5.87p1 & 6.06p1), Frasso Sabino Obs. (April 6.87-88p2), and CAST Obs. (April 8.86p1)

MPEC 2010-G68 - "18:09 UT" - Comet C/2010 F1 (Boattini)

CK10F010 C/2010 F1 (Boattini) (i=64.9°, q=3.588 AU, Q=133.667 AU, TP=2009 Nov. 10.6463 TT) from Remanzacco Obs. (March 20.94-95p2), Terskol Obs. (March 29.08p2 & 31.97-98p5), Moriyama Obs. (April 3.65-66p2 & 5.54-55p2), Schiaparelli Obs. (April 5.83p1 & 5.99p1), Castelmartini Obs. (April 5.95p3), PJMSO (April 6.19-21p7 & 8.21-23p6), San Marcello Pistoiese Obs. (April 6.85-88p3), Frasso Sabino Obs. (April 6.85-86p3), Klet Obs. (April 6.85p2 & 7.85p5), Maidbronn Obs. (April 7.00-02p3), Stixendorf Obs. (April 7.89-90p2), and CAST Obs. (April 8.89p1)

MPEC 2010-G67 - "18:02 UT" - Comet P/2010 E2 (Jarnac)

PK10E020 P/2010 E2 (Jarnac) (Centaur, q=2.399 AU, Q=14.890 AU, TP=2010 Apr. 7.9272 TT) from Remanzacco Obs. (March 17.05p2), Terskol Obs. (March 31.94-95p3 & April 6.75p3), Moriyama Obs. (April 3.61-62p2 & 5.62-63p2), CAST Obs. (April 5.87p1 & 8.85p1), Cordell-Lorenz Obs. (April 6.21-27p3 & 7.12-24p4), San Marcello Pistoiese Obs. (April 6.88-91p3), Stixendorf Obs. (April 7.92p2), Jarnac Obs. (April 8.26-30p3), LINEAR (April 8.30-34p5), and Klet Obs. (April 8.85-86p6)
FurthP FurtheP/2010 E3 are desirable.

MPEC 2010-G66 - "17:57 UT" - Comet C/2010 E1 (Garradd)

CK10E010 C/2010 E1 (Garradd) (i=71.7°, q=2.663 AU, Q=235.756 AU, TP=2009 Nov. 8.0743 TT) from RAS Obs. Moorook (April 2.53p3), CSS (April 5.16-18p4), CAST Obs. (April 5.83p1 & 8.82p1), PJMSO (April 6.18-19p6 & 8.16-17p7), Frasso Sabino Obs. (April 6.80-81p2), and Klet Obs. (April 8.83-85p4)

MPEC 2010-G65 - "17:46 UT" - Comet P/2010 D2 (WISE)

PK10D020 P/2010 D2 (WISE) (i=57.2°, q=3.660 AU, Q=9.749 AU, TP=2010 Mar. 4.3760 TT) from Schiaparelli Obs. (March 6.81p1 & 6.99p1) and RAS Mayhill (April 9.13-14p3)

MPEC 2010-G64 - "17:39 UT" - Comet P/2010 C1 (Scotti)

PK10C010 P/2010 C1 (Scotti) (Centaur, q=5.235 AU, Q=8.894 AU, TP=2009 Dec. 1.41366 TT) from Maidbronn Obs. (March 9.03-07p3) and Pla D'Arguines Obs. (April 4.85-87p3)

MPEC 2010-G63 - "17:28 UT" - Comet C/2009 O2 (Catalina)

CK09O020 C/2009 O2 (Catalina) (i=108.0°, q=0.695 AU, Q=546.282 AU, TP=2010 Mar. 24.41719 TT) from RAS Mayhill (March 31.11p2), Chante-Perdrix Obs. (March 31.81-83p3, April 4.80-82p3 & 5.82-84p2), and Buchloe Obs. (April 2.79p3)

MPEC 2010-G62 - "16:21 UT" - 2007 ML13

K07M13L 2007 ML13 (H=20.2 ~309m) from Tenagra II Obs. (March 14.46-49p3, 15.48-51p3 & April 9.39-41p3)

MPEC 2010-G61 - "15:46 UT" - 2010 GM23

K10G23M 2010 GM23 (small asteroid, Earth MOID=0.8 LD, H=24.8 ~37m) was discovered at 0728 UT on 8 April by CSS, which observed it at April 8.31-37p9. The discovery was confirmed by Sabino Canyon Obs. (April 8.36-37p3), Magdalena Ridge Obs. (MRO) (April 8.37-40p4 & 9.31-33p4), Klet Obs. (April 8.95p3), Great Shefford Obs. (April 8.96-98p3), Sandlot Obs. (April 9.30p3), Tenagra II Obs. (April 9.31-32p3), and Astronomical Research Obs. Westfield (ARO Westfield) (April 9.33p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 3.5 LD on 13 April.

MPEC 2010-G60 - "15:40 UT" - 2010 GL23

K10G23L 2010 GL23 (small asteroid, H=22.7 ~98m) was discovered at 0726 UT on 8 April by CSS, which observed it at April 8.31-36p9. The discovery was confirmed by MRO (April 8.37-39p4), Sandlot Obs. (April 9.31-32p4), ARO Westfield (April 9.32p3), and Tenagra II Obs. (April 9.36-37p3).

MPEC 2010-G59 - "15:20 UT" - 2010 GK23

K10G23K 2010 GK23 (Q=5.140 AU, H=19.8 ~371m) was discovered at 0001 UT on 5 April by WISE, which observed it at April 4.07p1, 4.54p1, 4.67p1, 4.74p1, 4.80p1, 5.00p1, 5.20p1, 5.27p1, 5.33p1, and 5.40p1. The discovery was confirmed by MRO (April 9.19-21p4), Sandlot Obs. (April 9.23-27p2), ARO Westfield (April 9.29-31p2), and Tenagra II Obs. (April 9.32-36p5).

MPEC 2010-G58 - "15:13 UT" - 2010 GJ23

K10G23J 2010 GJ23 (H=18.4 ~708m) was discovered at 0307 UT on 4 April by WISE, which observed it at April 3.34p1, 3.47p1, 3.60p1, 3.73p1, 3.87p1, 4.13p1, 4.33p1, 4.46p2, 4.53p1, 4.59p1, 4.66p1, 4.73p1, 4.79p1, 4.86p1, 4.99p1, 5.12p1, 5.25p1, and 5.39p1. The discovery was confirmed by MRO (April 9.12-15p4) and the Spacewatch 1.8m telescope (April 9.16-17p3).

MPEC 2010-G57 - "14:43 UT" - 2010 FX86

K10F86X 2010 FX86 (KBO, q=41.176 AU, Q=46.848 AU, H=4.3 ~467 km) was discovered at 0253 UT on 17 March by Las Campanas Obs., which observed it at March 17.12p1, 17.17p1, 17.21p1, April 4.10p1, 4.15p1, and 4.21p1. The discovery was confirmed by Auckland Obs. (April 8.44-48p2).

MPEC 2010-G56 - "14:08 UT" - 2010 EL139

K10ED9L 2010 EL139 (KBO, q=36.547 AU, Q=50.163 AU, H=5.0 ~339 km) was discovered at 0406 UT on 12 March by Las Campanas Obs., which observed it at March 12.17p1, 12.21p1, 12.26p1, April 4.11p1, 4.16p1, and 4.21p1. The discovery was confirmed by Farm Cove Obs. (April 9.50-53p2).

MPEC 2010-G55 - "12:40 UT" - 2010 GU21

K10G21U 2010 GU21 (Earth MOID=3.6 LD, H=20.8 ~234m) was discovered at 0807 UT on 5 April by CSS, which observed it at April 5.34-36p4. The discovery was confirmed by La Sagra Obs. (April 8.87-89p6 & 9.15-16p4), Great Shefford Obs. (April 8.00-01p3), Modra Obs. (April 9.04-05p5), Schiaparelli Obs. (April 9.14-15p3), Doc Greiner Research Obs. (DGRO) (April 9.14-16p6), Rodeo Obs. (April 9.19p3), Sandlot Obs. (April 9.20-21p3), ARO Westfield (April 9.26-27p3), Sabino Canyon Obs. (April 9.31-32p3), Tenagra II Obs. (April 9.31-32p3), Ernesto Guido via RAS Obs. Mayhill (April 9.35-36p2), and Cordell-Lorenz Obs. (April 9.35-38p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 8.3 LD on 4 May.

MPEC 2010-G54 - "12:28 UT" - 2010 FF10

K10F10F 2010 FF10 (H=21.7 ~155m) from CSS (April 9.29-34p7), Sandlot Obs. (April 9.34-36p3), ARO Westfield (April 9.36p3), MRO (April 9.38-40p4), Sabino Canyon Obs. (April 9.38-39p3), Tenagra II Obs. (April 9.43-44p3), and Spacewatch 1.8m (April 9.47-48p3)

MPEC 2010-G53 - "12:25 UT" - 2010 DE

K10D00E 2010 DE (H=17.2 ~1.23 km) from CSS (April 9.38-46p10) and MRO (April 9.45-48p4)

<< DOU on 9 Apr. '10 >> MPEC 2010-G52 - "06:09 UT" - Daily Orbit Update

Observations of risk-listed objects
K10G07T 2010 GT7 (Q=4.580 AU, arc=1 day, H=20.3 ~295m) from Tenagra II Obs. (April 8.37-38p3), Sandlot Obs. (April 8.44-45p3), and Jim Young via Table Mtn. Obs. (April 8.45-47p4)
K10G07S 2010 GS7 (Q=4.492 AU, arc=1 day, H=21.2 ~195m) from LINEAR (April 8.23-28p5), Tenagra II Obs. (April 8.27p3), and Young/Table Mtn. (April 8.39-40p4)
K10G07H 2010 GH7 (small asteroid, arc=1 day, H=27.4 ~11m) from Tenagra II Obs. (April 8.40-41p3)
K10G06D 2010 GD6 (small asteroid, arc=3 days, H=23.7 ~62m) from Sandlot Obs. (April 8.26-27p3)
K10F07E 2010 FE7 (small asteroid, arc=20 days, H=23.7 ~62m) from MRO (April 8.29-33p4 at R=22.2-9)
K05Y55U 2005 YU55 (almost small, arc=2 opp, H=21.9 ~141m) from Tenagra II Obs. (April 5.35-36p3, 6.29-30p3 & 7.33p3), Frasso Sabino Obs. (April 6.91p3), Balzaretto Obs. (April 7.88-91p3), Hyperion Obs. (April 7.93-99p5), PJMSO (April 8.23-24p6), Spacewatch 1.8m (April 8.26p3), Wiggins Obs. (April 8.31-33p4), MRO (April 8.35-37p4), LINEAR (April 8.35-40p5), Desert Moon Obs. (April 8.46p3), Klet Obs. (April 8.90p8 & 8.97-99p18), and Como Obs. (April 8.94-97p4)
Observations of recently (no longer) risk-listed objects
K10G06Y 2010 GY6 (arc=2 days, H=19.3 ~467m) from Desert Moon Obs. (April 8.21-25p3) and Tenagra II Obs. (April 8.22p3)
K10G06B 2010 GB6 (small asteroid, arc=3 days, H=22.1 ~129m) from CSS (April 8.20-21p4) and Tenagra II Obs. (April 8.21-22p3)
K10G06A 2010 GA6 (small asteroid, arc=4 days, H=25.8 ~23m) from Balzaretto Obs. (April 7.80-81p3), PJMSO (April 8.20-21p10), Young/Table Mtn. (April 8.28-30p2), H. Sato via RAS Obs. Mayhill (April 8.31-32p4), Alter Satzberg Obs. (April 8.79-81p5 & 8.91p3), Klet Obs. (April 8.80-81p2), Pla D'Arguines Obs. (April 8.82p4 & 8.88p3), Verona Obs. (April 8.84p5), and Great Shefford Obs. (April 8.84p3 & 9.05-06p3)
K10F09Q 2010 FQ9 (small asteroid, arc=19 days, H=22.9 ~89m) from Spacewatch 1.8m (April 8.27-28p3)
K10E44K 2010 EK44 (Q=5.040 AU, arc=24 days, H=19.7 ~389m) from Schiaparelli Obs. (April 5.96-98p3)
Observations of small asteroids (H>22.0)
K10G07F 2010 GF7 (arc=4 days, H=25.9 ~22m) from Tenagra II Obs. (April 8.44-45p6), Great Shefford Obs. (April 8.99-02p4), and Schiaparelli Obs. (April 9.12-13p2)
K10G05Z 2010 GZ5 (arc=4 days, H=22.9 ~89m) from Tenagra II Obs. (April 8.39-40p3) and Spacewatch 1.8m (April 8.49-50p3)
K10G05U 2010 GU5 (arc=4 days, H=24.4 ~45m) from Schiaparelli Obs. (April 6.08-09p3), Guidestar Obs. (April 6.87-90p3), Klet Obs. (April 7.87-88p6), Tenagra II Obs. (April 8.29p3), and LINEAR (April 8.35-40p5)
K10E45Z 2010 EZ45 (arc=24 days, H=22.6 ~102m) from CSS (April 8.31-33p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K10G07J 2010 GJ7 (arc=1 day, H=21.8 ~148m) from Tenagra II Obs. (April 8.14p3)
K10F48L 2010 FL48 (arc=14 days, H=21.9 ~141m) from Chabot Obs. (April 8.22p3) and Tenagra II Obs. (April 8.25-26p3)
K10F06B 2010 FB6 (arc=21 days, H=21.9 ~141m) from Spacewatch 1.8m (April 8.29p3)
K10C19F 2010 CF19 (arc=53 days, H=21.9 ~141m) from Spacewatch 1.8m (April 8.30-31p3)
K05X01B 2005 XB1 (arc=2 opp, H=21.8 ~148m) from Chabot Obs. (April 8.27-28p3)
J98W02B 1998 WB2 (arc=2 opp, H=21.8 ~148m) from Verona Obs. (April 8.82p4), Alter Satzberg Obs. (April 8.88-89p4), and Great Shefford Obs. (April 8.90-91p3)
Observations of other objects
K10G07R 2010 GR7 (q=0.284 AU, arc=2 days, H=18.2 ~776m) from Tenagra II Obs. (April 8.35-36p3)
K10G07A 2010 GA7 (arc=3 days, H=21.2 ~195m) from Schiaparelli Obs. (April 6.99-00p3), Klet Obs. (April 7.86-87p7), Chabot Obs. (April 8.25-26p3), Verona Obs. (April 8.87p4), and DGRO (April 9.17-18p7)
K10G06Z 2010 GZ6 (i=44.3°, arc=2 days, H=19.6 ~407m) from Tenagra II Obs. (April 8.26-27p3) and Klet Obs. (April 8.88-89p3)
K10G06U 2010 GU6 (Q=4.619 AU, arc=3 days, H=20.4 ~282m) from Spacewatch 0.9m (April 7.32-35p3) and Tenagra II Obs. (April 8.43p3)
K10G06T 2010 GT6 (arc=4 days, H=21.4 ~178m) from Tenagra II Obs. (April 8.27-28p3), Desert Moon Obs. (April 8.32-34p3), and Klet Obs. (April 8.93-94p4)
K10G06C 2010 GC6 (arc=3 days, H=21.2 ~195m) from Tenagra II Obs. (April 8.23p3)
K10E43Q 2010 EQ43 (i=44.2°, arc=25 days, H=18.5 ~676m) from Schiaparelli Obs. (April 5.93-94p2 & 6.00p1)
K10D34B 2010 DB34 (arc=46 days, H=19.5 ~426m) from University Hills Obs. (April 4.29-30p13) and Klet Obs. (April 8.91p7)
K10CI0C 2010 CC180 (arc=2 opp, H=18.8 ~589m) from University Hills Obs. (April 7.27-31p5 & 8.27-31p5) and Balzaretto Obs. (April 7.86-87p3)
K10C44M 2010 CM44 (arc=55 days, H=19.4 ~446m) from University Hills Obs. (April 7.36-38p25 & 8.33-38p25) and CAST Obs. (April 8.90p1)
K09X11E 2009 XE11 (Q=5.338 AU, arc=2 opp, H=17.0 ~1.35 km) from Desert Moon Obs. (April 8.12-18p3)
K09U18V 2009 UV18 (Q=5.185 AU, arc=2 opp, H=15.9 ~2.24 km, q=1.167 AU) from Sato/RAS Mayhill (April 7.43-44p3 & 8.29-30p2) and CSS (April 8.46-48p4)
K07J20Z 2007 JZ20 (i=40.5°, arc=3 opp, H=18.5 ~676m) from La Sagra Obs. (April 8.09-12p3)
K07D56B 2007 DB56 (arc=3 opp, H=19.1 ~513m) from Desert Moon Obs. (April 8.38-44p3)
K06UL7Q 2006 UQ217 (Q=4.762 AU, arc=2 opp, H=16.5 ~1.70 km) from Spacewatch 1.8m (April 8.32-35p3)
K06U00R 2006 UR (arc=2 opp, H=19.4 ~446m) from CSS (April 8.22-24p4)
K06Q89R 2006 QR89 (arc=3 opp, H=19.8 ~371m) from Spacewatch 0.9m (April 8.19-21p2)
K06Q58A 2006 QA58 (arc=2 opp, H=20.3 ~295m) from Spacewatch 1.8m (April 8.40-41p3)
K05E00E 2005 EE (arc=3 opp, H=21.3 ~186m) from Spacewatch 1.8m (April 8.37p3)
K02K03L 2002 KL3 (arc=3 opp, H=18.0 ~851m) from Spacewatch 1.8m (April 8.38-39p3)
L8863 218863 2006 WO127 from Schiaparelli Obs. (April 5.82p3 & 5.95p2) and Thompsonville Obs. (April 9.17-18p6)
L5588 215588 2003 HF2 from LINEAR (April 8.37-41p3)
G4201 164201 2004 EC from La Sagra Obs. (April 7.94-97p3)
G3001 163001 2001 SE170 from Spacewatch 0.9m (April 8.36-39p3)
G2882 162882 2001 FD58 from Chabot Obs. (April 8.18-19p3)
F3814 153814 2001 WN5 from MRO (April 8.34-37p4)
E1432 141432 2002 CQ11 from La Sagra Obs. (April 7.95-97p3)
D8095 138095 2000 DK79 from Spacewatch 0.9m (April 8.41-44p3)
D6618 136618 1994 CN2 from LINEAR (April 8.29-34p4)
85628 85628 1998 KV2 from CSS (April 8.46-48p4)
68216 68216 2001 CV26 from Balzaretto Obs. (April 7.84p3), La Sagra Obs. (April 7.87-89p3), and LINEAR (April 8.31-35p4)
54789 54789 2001 MZ7 from Balzaretto Obs. (April 7.82-83p3)
11066 11066 Sigurd (1992 CC1) from LINEAR (April 8.24-28p5)
03554 3554 Amun (1986 EB) from Schiaparelli Obs. (April 5.82-84p2 & 5.95p1) and Balzaretto Obs. (April 7.83-84p3)
02368 2368 Beltrovata (1977 RA) from CSS (April 8.22-24p4)
01627 1627 Ivar (1929 SH) from Corner Obs. (April 8.90-94p4) and Thompsonville Obs. (April 9.11-13p6)
00433 433 Eros (1898 DQ) from PJMSO (April 8.08-09p5)

Observers on 9 April '10

A total of 98 observing facilities appeared in this day's MPECs.

Code	Observer / observatory
`834`	AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2010-G70 -- 81P
`349`	Ageo Obs. in Japan, 6 in MPEC 2010-G70 -- P/2010 A3, C/2009 U3, C/2008 Q3, C/2007 VO53, C/2006 W3, 10P
`J97`	Alginet Obs. in Spain, 4 in MPEC 2010-G70 -- C/2007 Q3-A, 81P, 74P, 29P
`J24`	Altamira Obs. in Spain, 6 in MPEC 2010-G70 -- C/2009 K5, C/2008 N1, C/2008 FK75, C/2007 Q3-A, 149P, 118P
`B03`	Alter Satzberg Obs. in Austria, 2 in MPEC 2010-G52 -- 2010 GA6, 1998 WB2
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 5 in MPECs 2010-G54, 2010-G55, 2010-G59, 2010-G60 & 2010-G61 -- 2010 GU21, 2010 GM23, 2010 GL23, 2010 GK23, 2010 FF10
`J51`	Atlante Obs. in the Canary Islands, 4 in MPEC 2010-G70 -- C/2005 L3, 118P, 81P, 29P
`467`	Auckland Obs. in New Zealand, 2 in MPECs 2010-G57 & 2010-G70 -- 2010 FX86, C/2010 A4
`A81`	Balzaretto Obs. in Italy, 6 in MPEC 2010-G52 -- 2010 GA6, 2010 CC180, 2005 YU55, 68216, 54789, 3554
`C12`	Berta Obs. in Spain, 2 in MPEC 2010-G70 -- C/2007 Q3-A, 81P
`B75`	Betelgeuse Station in Italy, 3 in MPEC 2010-G70 -- C/2008 N1, C/2008 FK75, C/2007 Q3-A
`I99`	Blanquita Obs. in Spain, 2 in MPEC 2010-G70 -- 81P, 74P
`B96`	Brixiis Obs. in Belgium, 3 in MPEC 2010-G70 -- C/2009 K5, C/2007 Q3-A, 81P
`215`	Buchloe Obs. in Germany, 11 in MPECs 2010-G63 & 2010-G70 -- C/2009 U5, C/2009 O2, C/2009 K5, C/2009 F2, C/2008 Q1, C/2007 VO53, C/2007 S2, C/2007 Q3-A, C/2007 D1, 232P, 31P
`235`	CAST Obs. in Italy, 5 in MPECs 2010-G52, 2010-G66, 2010-G67, 2010-G68 & 2010-G69 -- C/2010 F3, C/2010 F1, P/2010 E2, C/2010 E1, 2010 CM44
`B09`	Capannoli Obs. in Italy, 1 in MPEC 2010-G70 -- 81P
`B53`	Casal Lumbroso Obs. in Italy, 3 in MPEC 2010-G70 -- C/2009 K5, C/2007 Q3-A, 81P
`B66`	Casasco Obs. in Italy, 1 in MPEC 2010-G70 -- C/2007 Q3-A
`160`	Castelmartini Obs. in Italy, 4 in MPECs 2010-G68 & 2010-G70 -- C/2010 F1, C/2010 B1, 94P, 31P
`703`	Catalina Sky Survey (CSS) in Arizona, 17 in MPECs 2010-G52, 2010-G53, 2010-G54, 2010-G55, 2010-G60, 2010-G61, 2010-G66 & 2010-G70 -- 2010 GU21, 2010 GM23, 2010 GL23, 2010 GB6, 2010 FF10, 2010 EZ45, C/2010 E1, 2010 DE, P/2010 A3, 2009 UV18, C/2007 M1, 2006 UR, 85628, 2368, 234P, 149P, 74P
`G58`	Chabot Obs. in northern California, 4 in MPEC 2010-G52 -- 2010 GA7, 2010 FL48, 2005 XB1, 162882
`A77`	Chante-Perdrix Obs. in France, 5 in MPECs 2010-G63 & 2010-G70 -- C/2009 O2, C/2009 K5, C/2007 Q3-A, 31P, 10P
`J01`	Cielo Profundo Obs. in Spain, 10 in MPECs 2010-G70 & 2010-G71 -- C/2010 D4, C/2009 K5, C/2008 FK75, C/2007 Q3-A, C/2007 M1, C/2006 Q1, C/2005 L3, 235P, 81P, 10P
`C13`	Como Obs., 1 in MPEC 2010-G52 -- 2005 YU55
`850`	Cordell-Lorenz Obs. in Tennessee, 5 in MPECs 2010-G55, 2010-G67 & 2010-G70 -- 2010 GU21, P/2010 E2, C/2005 L3, 81P, 29P
`B50`	Corner Obs. in Germany, 3 in MPECs 2010-G52 & 2010-G70 -- 1627, 30P, 29P
`448`	Desert Moon Obs. in New Mexico, 5 in MPEC 2010-G52 -- 2010 GY6, 2010 GT6, 2009 XE11, 2007 DB56, 2005 YU55
`H26`	Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPECs 2010-G52 & 2010-G55 -- 2010 GU21, 2010 GA7
`J19`	El Maestrat Obs. in Spain, 4 in MPEC 2010-G70 -- C/2008 FK75, C/2007 Q3-A, 157P, 81P
`J36`	El Olivo Obs. in Spain, 4 in MPEC 2010-G70 -- C/2008 N1, C/2005 L3, 94P, 29P
`E85`	Farm Cove Obs. in New Zealand, 3 in MPECs 2010-G56 & 2010-G70 -- 2010 EL139, P/2010 A5, C/2010 A4
`F65`	Faulkes Telescope North in Hawaii, 2 in MPEC 2010-G70 -- C/2007 Q3-B, C/2007 Q3-A
`157`	Frasso Sabino Obs. in Italy, 4 in MPECs 2010-G52, 2010-G66, 2010-G68 & 2010-G69 -- C/2010 F3, C/2010 F1, C/2010 E1, 2005 YU55
`372`	Geisei Obs. in Japan, 1 in MPEC 2010-G70 -- C/2010 A4
`J95`	Great Shefford Obs. in England, 5 in MPECs 2010-G52, 2010-G55 & 2010-G61 -- 2010 GU21, 2010 GM23, 2010 GF7, 2010 GA6, 1998 WB2
`E16`	Grove Creek Obs. in New South Wales, 1 in MPEC 2010-G70 -- 169P
`442`	Gualba Obs. in Spain, 2 in MPEC 2010-G70 -- C/2007 Q3-A, 29P
`A17`	Guidestar Obs. in Germany, 1 in MPEC 2010-G52 -- 2010 GU5
`I96`	Hyperion Obs., 2 in MPECs 2010-G52 & 2010-G70 -- 2005 YU55, 29P
`B15`	Inastars Obs. in Germany, 1 in MPEC 2010-G70 -- C/2008 FK75
`J28`	Jaen Obs. in Spain, 1 in MPEC 2010-G70 -- C/2005 L3
`G92`	Jarnac Obs. in Arizona, 1 in MPEC 2010-G67 -- P/2010 E2
`415`	Kambah Obs. in the Australian Capital Territory, 1 in MPEC 2010-G70 -- C/2010 A4
`046`	Klet Obs. in the Czech Republic, 11 in MPECs 2010-G52, 2010-G61, 2010-G66, 2010-G67 & 2010-G68 -- 2010 GZ6, 2010 GU5, 2010 GT6, 2010 GM23, 2010 GA7, 2010 GA6, C/2010 F1, P/2010 E2, C/2010 E1, 2010 DB34, 2005 YU55
`D95`	Kurihara Obs. in Japan, 4 in MPEC 2010-G70 -- C/2009 K5, C/2007 Q3-A, C/2006 W3, 81P
`704`	LINEAR in New Mexico, 19 in MPECs 2010-G52, 2010-G67 & 2010-G70 -- 2010 GU5, 2010 GS7, P/2010 E2, P/2009 Q4, C/2009 K5, C/2009 F2, C/2008 N1, C/2006 Q1, 2005 YU55, 68216, 215588, 136618, 11066, 235P, 203P, 169P, 157P, 118P, 30P
`J31`	La Axarquia Obs. in Spain, 3 in MPEC 2010-G70 -- C/2007 Q3-A, 81P, 74P
`J75`	La Sagra Obs. in Spain, 6 in MPECs 2010-G52, 2010-G55 & 2010-G70 -- 2010 GU21, 2007 JZ20, 68216, 164201, 141432, 234P
`J38`	La Vara Obs. in Spain, 2 in MPEC 2010-G70 -- 81P, 29P
`304`	Las Campanas Obs. in Chile, 2 in MPECs 2010-G56 & 2010-G57 -- 2010 FX86, 2010 EL139
`J59`	Linceo Obs. in Spain, 2 in MPEC 2010-G70 -- 81P, 29P
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 9 in MPECs 2010-G52, 2010-G53, 2010-G54, 2010-G58, 2010-G59, 2010-G60 & 2010-G61 -- 2010 GM23, 2010 GL23, 2010 GK23, 2010 GJ23, 2010 FF10, 2010 FE7, 2010 DE, 2005 YU55, 153814
`B82`	Maidbronn Obs. in Germany, 5 in MPECs 2010-G64, 2010-G68 & 2010-G70 -- C/2010 F1, P/2010 C1, C/2005 L3, 169P, 81P
`C10`	Maisoncelles Obs. in France, 5 in MPEC 2010-G70 -- C/2009 K5, C/2007 Q3-B, C/2007 Q3-A, 81P, 10P
`232`	Masquefa Obs. in Spain, 1 in MPEC 2010-G70 -- 29P
`118`	Modra Obs. in Slovakia, 1 in MPEC 2010-G55 -- 2010 GU21
`213`	Montcabre Obs. in Spain, 3 in MPEC 2010-G70 -- C/2007 Q3-A, 81P, 29P
`945`	Monte Deva Obs. in Spain, 10 in MPEC 2010-G70 -- P/2010 A5, C/2009 K5, C/2008 FK75, C/2007 Q3-A, 118P, 94P, 81P, 74P, 30P, 29P
`108`	Montelupo Obs. in Italy, 2 in MPEC 2010-G70 -- 81P, 74P
`900`	Moriyama Obs. in Japan, 12 in MPECs 2010-G67, 2010-G68 & 2010-G70 -- C/2010 F1, P/2010 E2, P/2010 A3, C/2008 Q3, C/2008 N1, C/2007 Q3-A, C/2007 D1, 169P, 118P, 94P, 81P, 74P
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2010-G70 -- C/2008 Q1
`J93`	Mt. Tuffley Obs. in England, 2 in MPEC 2010-G70 -- C/2007 Q3-A, 81P
`D81`	Nagano Obs. in Japan, 1 in MPEC 2010-G70 -- 94P
`J47`	Nazaret Obs. in Spain, 5 in MPEC 2010-G70 -- C/2007 Q3-A, C/2007 M1, 118P, 81P, 29P
`B49`	Paus Obs. in Spain, 1 in MPEC 2010-G70 -- C/2007 Q3-A
`H23`	Pear Tree Obs. in Florida, 1 in MPEC 2010-G70 -- C/2008 Q3
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 19 in MPECs 2010-G52, 2010-G66, 2010-G68 & 2010-G70 -- 2010 GA6, C/2010 F1, C/2010 E1, C/2010 B1, P/2010 A3, C/2009 U5, C/2008 Q3, C/2008 N1, C/2007 Q3-A, 2005 YU55, C/2005 L3, 433, 157P, 118P, 94P, 81P, 74P, 30P, 29P
`941`	Pla D'Arguines Obs. in Spain, 6 in MPECs 2010-G52, 2010-G64, 2010-G69 & 2010-G70 -- 2010 GA6, C/2010 F3, P/2010 C1, C/2007 Q3-B, C/2007 Q3-A, C/2007 M1
`J53`	Posadas Obs. in Spain, 6 in MPEC 2010-G70 -- C/2010 B1, P/2010 A3, C/2005 L3, 118P, 94P, 29P
`H06`	RAS Obs. Mayhill in New Mexico, 5 in MPECs 2010-G63, 2010-G65 & 2010-G70 -- P/2010 D2, P/2010 A3, P/2009 Q4, C/2009 O2, 157P
`H06%`	Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-G55 -- 2010 GU21
`H06\|`	H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 2 in MPEC 2010-G52 -- 2010 GA6, 2009 UV18
`D90`	RAS Obs. Moorook in South Australia, 1 in MPEC 2010-G66 -- C/2010 E1
`473`	Remanzacco Obs. in Italy, 3 in MPECs 2010-G67, 2010-G68 & 2010-G70 -- C/2010 F1, P/2010 E2, 30P
`H11`	Rodeo Obs. in New Mexico, 1 in MPEC 2010-G55 -- 2010 GU21
`J07`	SPAG Monfrague Obs. in Spain, 1 in MPEC 2010-G70 -- 29P
`619`	Sabadell Obs. in Spain, 1 in MPEC 2010-G70 -- 81P
`854`	Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-G54, 2010-G55 & 2010-G61 -- 2010 GU21, 2010 GM23, 2010 FF10
`104`	San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2010-G67 & 2010-G68 -- C/2010 F1, P/2010 E2
`H36`	Sandlot Obs. in Kansas, 7 in MPECs 2010-G52, 2010-G54, 2010-G55, 2010-G59, 2010-G60 & 2010-G61 -- 2010 GU21, 2010 GT7, 2010 GM23, 2010 GL23, 2010 GK23, 2010 GD6, 2010 FF10
`204`	Schiaparelli Obs. in Italy, 13 in MPECs 2010-G52, 2010-G55, 2010-G65, 2010-G68, 2010-G69 & 2010-G70 -- 2010 GU5, 2010 GU21, 2010 GF7, 2010 GA7, C/2010 F3, C/2010 F1, 2010 EQ43, 2010 EK44, P/2010 D2, C/2008 FK75, C/2006 Q1, 218863, 3554
`D93`	Sendai Obs. in Japan, 11 in MPEC 2010-G70 -- C/2010 B1, P/2010 A5, P/2010 A3, C/2008 FK75, C/2007 Q3-A, C/2005 L3, 118P, 94P, 81P, 74P, 29P
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2010-G70 -- C/2007 S2
`G68`	Sierra Stars Obs. in northern California, 1 in MPEC 2010-G70 -- 94P
`691`	Spacewatch 0.9m telescope in Arizona, 5 in MPECs 2010-G52 & 2010-G70 -- 2010 GU6, 2006 QR89, 163001, 138095, 81P
`291`	Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2010-G52, 2010-G54 & 2010-G58 -- 2010 GZ5, 2010 GJ23, 2010 FQ9, 2010 FF10, 2010 FB6, 2010 CF19, 2006 UQ217, 2006 QA58, 2005 YU55, 2005 EE, 2002 KL3
`A71`	Stixendorf Obs. in Austria, 9 in MPECs 2010-G67, 2010-G68 & 2010-G70 -- C/2010 F1, P/2010 E2, P/2010 A3, C/2009 U3, 157P, 118P, 94P, 30P, 29P
`6735`	Jim Young via Table Mtn. Obs. in southern California, 3 in MPEC 2010-G52 -- 2010 GT7, 2010 GS7, 2010 GA6
`926`	Tenagra II Obs. in Arizona, 22 in MPECs 2010-G52, 2010-G54, 2010-G55, 2010-G59, 2010-G60, 2010-G61 & 2010-G62 -- 2010 GZ6, 2010 GZ5, 2010 GY6, 2010 GU6, 2010 GU5, 2010 GU21, 2010 GT7, 2010 GT6, 2010 GS7, 2010 GR7, 2010 GM23, 2010 GL23, 2010 GK23, 2010 GJ7, 2010 GH7, 2010 GF7, 2010 GC6, 2010 GB6, 2010 FL48, 2010 FF10, 2007 ML13, 2005 YU55
`B18`	Terskol Obs. in Russia, 10 in MPECs 2010-G67, 2010-G68, 2010-G69, 2010-G70 & 2010-G71 -- C/2010 F3, C/2010 F1, P/2010 E2, C/2010 D4, C/2009 K5, C/2008 FK75, C/2007 Q3-A, C/2006 Q1, 149P, 94P
`H53`	Thompsonville Obs. in Illinois, 2 in MPEC 2010-G52 -- 218863, 1627
`H10`	Tzec Maun Obs. Mayhill in New Mexico, 5 in MPEC 2010-G70 -- C/2009 K5, C/2007 Q3-A, C/2006 OF2, C/2005 L3, 81P
`D96`	Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-G70 -- 235P
`G72`	University Hills Obs. in southern California, 3 in MPEC 2010-G52 -- 2010 DB34, 2010 CM44, 2010 CC180
`A48`	Verona Obs. in Italy, 3 in MPEC 2010-G52 -- 2010 GA7, 2010 GA6, 1998 WB2
`H47`	Vicksburg Obs. in Mississippi, 5 in MPEC 2010-G70 -- C/2006 OF2, C/2005 L3, 118P, 94P, 29P
`C51`	WISE in Earth polar orbit, 2 in MPECs 2010-G58 & 2010-G59 -- 2010 GK23, 2010 GJ23
`718`	Wiggins Obs. in Utah, 1 in MPEC 2010-G52 -- 2005 YU55
`367`	Yatsuka Obs. in Japan, 2 in MPEC 2010-G70 -- C/2009 K5, 29P
`J08`	Zonalunar Obs. in Spain, 4 in MPEC 2010-G70 -- C/2009 K5, C/2007 Q3-A, 118P, 81P

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 9 April '10

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 1235 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
0000NNN000 Object	Risk Monitor	When Noted UTC	0000T0000 Year Range	VI #	000NN00 Prob Cum	T0000 PS Cum	T0000 PS Max	T S	Notes for Today's Latest Risk Assessments

2010 GT7	NEODyS	1236	2069-2081	4	7.91e-09	-5.88	-6.01	0	NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2010/04/07.443 to 2010/04/08.468."
2010 GT7	JPL Sentry	1235	2069-2108	8	1.3e-08	-5.64	-5.95	0	JPL: "Analysis based on 44 observations spanning 1.0251 days (2010-Apr-07.44183 to 2010-Apr-08.46697)." Diameter approximately 0.290 km. from mean, weighted H=20.4.

2010 GS7	JPL Sentry	1235	R E M O V E D						JPL: Risk listing removed at 1030 UTC.

2010 GH7	JPL Sentry	1235	2093-2110	39	6.4e-05	-5.84	-6.48	0	JPL: "Analysis based on 16 observations spanning 1.0201 days (2010-Apr-07.38604 to 2010-Apr-08.40612)." Diameter approximately 0.011 km. from mean, weighted H=27.4.
2010 GH7	NEODyS	1235	R E M O V E D						-

2010 GD6	JPL Sentry	1235	R E M O V E D						JPL: Risk listing removed at 0953 UTC.

2010 FE7	NEODyS	1235	R E M O V E D						-
2010 FE7	JPL Sentry	1235	R E M O V E D						JPL: Risk listing removed at 0951 UTC.

2001 WN5	NEODyS	1236	2099-2133	8	1.33e-07	-4.06	-4.16	0	NEODyS: "Based on 142 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/04/08.369."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology on 9 April '10

Times are UTC for when items were noted or added by The Tracking News.

0031 4/10	Grabbed MPEC 2010-G55 - 2010 GU21 - see above Grabbed MPEC 2010-G56 - 2010 EL139 - see above Grabbed MPEC 2010-G57 - 2010 FX86 - see above Grabbed MPEC 2010-G58 - 2010 GJ23 - see above Grabbed MPEC 2010-G59 - 2010 GK23 - see above Grabbed MPEC 2010-G60 - 2010 GL23 - see above Grabbed MPEC 2010-G61 - 2010 GM23 - see above Grabbed MPEC 2010-G62 - 2007 ML13 - see above Grabbed MPEC 2010-G63 - Comet C/2009 O2 (Catalina) - see above Grabbed MPEC 2010-G64 - Comet P/2010 C1 (Scotti) - see above Grabbed MPEC 2010-G65 - Comet P/2010 D2 (WISE) - see above Grabbed MPEC 2010-G66 - Comet C/2010 E1 (Garradd) - see above Grabbed MPEC 2010-G67 - Comet P/2010 E2 (Jarnac) - see above Grabbed MPEC 2010-G68 - Comet C/2010 F1 (Boattini) - see above Grabbed MPEC 2010-G69 - Comet C/2010 F3 (Scotti) - see above Grabbed MPEC 2010-G70 - Observations of Comets - see above Grabbed MPEC 2010-G71 - Comet C/2010 D4 (WISE) - see above
1236	Noted that NEODyS has updated its 2001 WN5 risk assessment - see above Grabbed MPEC 2010-G52 - Daily Orbit Update - see above Grabbed MPEC 2010-G53 - 2010 DE - see above Grabbed MPEC 2010-G54 - 2010 FF10 - see above
1235	Noted that JPL Sentry has removed 2010 FE7 as an impact risk - see above Noted that NEODyS has removed 2010 FE7 as an impact risk - see above Noted that JPL Sentry has removed 2010 GD6 as an impact risk - see above Noted that JPL Sentry has updated its 2010 GH7 risk assessment - see above Noted that NEODyS has removed 2010 GH7 as an impact risk - see above Noted that JPL Sentry has removed 2010 GS7 as an impact risk - see above Noted that JPL Sentry has updated its 2010 GT7 risk assessment - see above Noted that NEODyS has posted 2010 GT7 as an impact risk - see above

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