2008-05-11 Tracking News

Contents on 11 May '08

IAU Minor Planet Center
- NEOCP Activity -- ten listings: 2 new, 8 updated
- New MPECs -- three MPECs
Observers -- 24 observing facilities
Impact Risk Monitoring -- one object
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood Traffic Report
Ephemerides for risk-rated and nearby objects
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 11 May '08

The MPC's NEO Confirmation Page has 10 listings: 2 new, 8 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and eight updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of fifteen objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs on 11 May '08

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-J57 time-stamped "06:08 UT" - Daily Orbit Update - see below
MPEC 2008-J58 time-stamped "16:16 UT" - 2008 JM20 - see below
MPEC 2008-J59 time-stamped "16:18 UT" - 2008 JN20

MPEC 2008-J59 - "16:18 UT" - 2008 JN20

K08J20N 2008 JN20 (H=18.4 ~708m) was discovered at 0812 UT on 10 May by the Catalina Sky Survey (CSS), which observed it at May 10.34-36p4 and 10.41-45p8. The discovery was confirmed by Astronomical Research Obs. (ARO) (May 10.39-40p3), Sabino Canyon Obs. (May 10.42p3), Jim Bedient via Faulkes Telescope North (May 10.42-45p3), Mt. John Obs. (May 10.60p4 & 11.60p3), Gelenau Obs. (May 10.90p2), Drebach Obs. (May 10.90p3), Eschenberg Obs. (May 10.92p7), Naef Obs. (May 10.93-95p4), Modra Obs. (May 10.96-98p4), Libbiano Obs. (May 10.98-99p3), Homburg-Erbach Obs. (May 11.02-08p4), and Kanab Obs. (May 11.38-40p2).

MPEC 2008-J58 - "16:16 UT" - 2008 JM20

K08J20M 2008 JM20 (H=20.9 ~224m) was discovered at 0547 UT on 10 May by CSS, which observed it at May 10.24-26p3, 10.30p4, and 10.45-48p5. The discovery was confirmed by ARO (May 10.30-31p5), Sabino Canyon Obs. (May 10.33-34p3), Tiki Obs. (May 10.49-53p3), Mt. John Obs. (May 10.50-51p4, 11.45p4 & 11.61p4), Gelenau Obs. (May 10.84-87p2), Eschenberg Obs. (May 10.85-86p3), Drebach Obs. (May 10.88p6), Modra Obs. (May 10.95p3), and Libbiano Obs. (May 10.96p2).

<< DOU on 11 May '08 >> MPEC 2008-J57 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K08H38B 2008 HB38 (arc=10 days, H=21.1 ~204m) from Andrushivka Obs. (May 5.02-04p4)
K08H04U 2008 HU4 (small asteroid, arc=10 days, H=28.3 ~7m) from ARO (May 10.37-39p4)
Observations of recently (no longer) risk-listed objects
K08J19V 2008 JV19 (arc=2 days, H=20.8 ~234m) from ARO (May 10.16-17p3)
K08H03D 2008 HD3 (i=52.0°, arc=12 days, H=19.8 ~371m) from Drebach Obs. (May 9.94-95p5)
K08H00G 2008 HG (small asteroid, arc=8 days, H=23.8 ~59m) from Schiaparelli Obs. (May 2.07-08p3)
K08GB0A 2008 GA110 (small asteroid, Q=4.494 AU, arc=26 days, H=22.1 ~129m) from Drebach Obs. (May 9.98-99p2)
Observations of small asteroids (H>22.0)
K08J14R 2008 JR14 (arc=3 days, H=25.0 ~34m) from the Siding Spring Survey (SSS) (May 9.54p2)
K08J02U 2008 JU2 (arc=8 days, H=22.7 ~98m) from Drebach Obs. (May 9.90-91p5) and Naef Obs. (May 10.87-92p3)
K08H00K 2008 HK (arc=13 days, H=22.2 ~123m) from Schiaparelli Obs. (May 1.88-89p3)
Observations of other objects
K08J19S 2008 JS19 (arc=2 days, H=18.8 ~589m) from Schiaparelli Obs. (May 8.86-88p3)
K08J14O 2008 JO14 (arc=3 days, H=21.2 ~195m) from Drebach Obs. (May 9.93p5)
K08J02W 2008 JW2 (arc=7 days, H=19.7 ~389m) from Tiki Obs. (May 10.59-61p4)
K08J00J 2008 JJ (i=44.6°, arc=11 days, H=19.0 ~537m) from Drebach Obs. (May 9.00-01p2) and Naef Obs. (May 10.94-95p2)
K08J00G 2008 JG (arc=9 days, H=20.8 ~234m) from Drebach Obs. (May 9.96-97p5) and Eschenberg Obs. (May 10.87-88p3)
K08H03S 2008 HS3 (arc=11 days, H=21.7 ~155m) from Schiaparelli Obs. (May 1.87-88p2), Green Island Obs. (May 9.76p1 & 9.80-83p2), Drebach Obs. (May 9.85p5), and Eschenberg Obs. (May 10.83-84p7)
K08H01W 2008 HW1 (q=0.102 AU, Q=5.065 AU, arc=41 days, H=17.5 ~1.07 km) from Homburg-Erbach Obs. (May 6.91p2, 7.91-92p3 & 9.91-96p3) and Libbiano Obs. (May 10.93-94p2)
K08F06N 2008 FN6 (arc=41 days, H=21.3 ~186m) from Drebach Obs. (May 9.88p5)
K08F00N 2008 FN (i=44.7°, arc=2 opp, H=18.5 ~676m) from Drebach Obs. (May 9.95-96p5)
K08E69C 2008 EC69 (Q=4.458 AU, arc=83 days, H=17.2 ~1.23 km) from Eschenberg Obs. (May 10.97-98p7)
K08E00S 2008 ES (Q=4.037 AU, arc=2 opp, H=18.3 ~741m) from Schiaparelli Obs. (May 1.93-97p4)
K07VI3R 2007 VR183 (Q=4.353 AU, arc=239 days, H=17.5 ~1.07 km) from Schiaparelli Obs. (May 1.85-86p5), Green Island Obs. (May 9.76p1 & 9.80-83p2), Drebach Obs. (May 9.85-86p2), and Dresden Obs. (May 10.87-89p5)
K07V04Q 2007 VQ4 (arc=3 opp, H=16.0 ~2.14 km, q=1.271 AU) from Homburg-Erbach Obs. (May 5.87p1, 5.91p1 & 7.87-88p2), Green Island Obs. (May 9.77-84p3), Drebach Obs. (May 9.84p5 & 10.85-86p5), and Libbiano Obs. (May 10.91-92p2)
K05S71E 2005 SE71 (arc=2 opp, H=18.2 ~776m) from Schiaparelli Obs. (May 1.94-95p3)
K05N07B 2005 NB7 (arc=3 opp, H=18.7 ~616m) from Ondrejov Obs. (May 6.84-07p12 & 8.84-07p12), Lumezzane Obs. (May 8.00p4), and Eschenberg Obs. (May 10.82-83p7)
K05G21O 2005 GO21 (arc=3 opp, H=16.5 ~1.70 km) from SSS (May 9.36p1 & 10.40p1)
K05G00G 2005 GG (arc=3 opp, H=16.1 ~2.04 km, q=0.694 AU) from Lumezzane Obs. (May 8.85-86p4)
K04J06G 2004 JG6 (IEO, q=0.298 AU, Q=0.973 AU, arc=2 opp, H=18.9 ~562m) from Schiaparelli Obs. (May 1.90-92p3)
K04C02R 2004 CR2 (arc=2 opp, H=19.3 ~467m) from Drebach Obs. (May 9.87p3)
K03K02O 2003 KO2 (q=0.356 AU, arc=4 opp, H=20.1 ~323m) from Eschenberg Obs. (May 10.94p2)
J99F00A 1999 FA (arc=2 opp, H=20.7 ~245m) from Eschenberg Obs. (May 10.95-96p3)
J98H03K 1998 HK3 (arc=5 opp, H=18.0 ~851m) from SSS (May 9.60-62p3)
J94A01W 1994 AW1 (arc=3 opp, H=17.5 ~1.07 km) from SSS (May 9.43-45p4)
I4266 184266 2004 VW14 from Lumezzane Obs. (May 8.97-98p4)
D9289 139289 2001 KR1 from Naef Obs. (May 10.88-92p3)
86667 86667 2000 FO10 from the Mt. Lemmon Survey (MLS) (May 10.22-24p4)
86067 86067 1999 RM28 from CSS (May 10.31-33p4)
85839 85839 1998 YO4 from Los Molinos Obs. (May 10.22-24p4)
85628 85628 1998 KV2 from Lumezzane Obs. (May 9.02-03p3)
68278 68278 2001 FC7 from Lumezzane Obs. (May 8.98-99p3)
53435 53435 1999 VM40 from Jarnac Obs. (May 10.22-25p3)
35107 35107 1991 VH from CSS (May 10.35-37p3)
11398 11398 1998 YP11 from Homburg-Erbach Obs. (May 9.95-99p2)
06456 6456 Golombek (1992 OM) from SSS (May 10.55-57p4)
03288 3288 Seleucus (1982 DV) from Drebach Obs. (May 10.83p5)
01866 1866 Sisyphus (1972 XA) from Drebach Obs. (May 10.84-85p3)

Observers on 11 May '08

A total of 24 observing facilities appear in today's MPECs.

Code	Observer / observatory
`A50`	Andrushivka Obs. in the Ukraine, 1 in MPEC 2008-J57 -- 2008 HB38
`H55`	Astronomical Research Obs. (ARO) in Illinois, 4 in MPECs 2008-J57, 2008-J58 & 2008-J59 -- 2008 JV19, 2008 JN20, 2008 JM20, 2008 HU4
`703`	Catalina Sky Survey (CSS) in Arizona, 4 in MPECs 2008-J57, 2008-J58 & 2008-J59 -- 2008 JN20, 2008 JM20, 86067, 35107
`113`	Drebach Obs. in Germany, 16 in MPECs 2008-J57, 2008-J58 & 2008-J59 -- 2008 JU2, 2008 JO14, 2008 JN20, 2008 JM20, 2008 JJ, 2008 JG, 2008 HS3, 2008 HD3, 2008 GA110, 2008 FN6, 2008 FN, 2007 VR183, 2007 VQ4, 2004 CR2, 3288, 1866
`639`	Dresden Obs. in Germany, 1 in MPEC 2008-J57 -- 2007 VR183
`151`	Eschenberg Obs. in Switzerland, 8 in MPECs 2008-J57, 2008-J58 & 2008-J59 -- 2008 JN20, 2008 JM20, 2008 JG, 2008 HS3, 2008 EC69, 2005 NB7, 2003 KO2, 1999 FA
`F654`	Jim Bedient in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-J59 -- 2008 JN20
`B32`	Gelenau Obs. in Germany, 2 in MPECs 2008-J58 & 2008-J59 -- 2008 JN20, 2008 JM20
`B34`	Green Island Obs. in Cyprus, 3 in MPEC 2008-J57 -- 2008 HS3, 2007 VR183, 2007 VQ4
`196`	Homburg-Erbach Obs. in Germany, 4 in MPECs 2008-J57 & 2008-J59 -- 2008 JN20, 2008 HW1, 2007 VQ4, 11398
`G92`	Jarnac Obs. in Arizona, 1 in MPEC 2008-J57 -- 53435
`682`	Kanab Obs. in Utah, 1 in MPEC 2008-J59 -- 2008 JN20
`B33`	Libbiano Obs. in Italy, 4 in MPECs 2008-J57, 2008-J58 & 2008-J59 -- 2008 JN20, 2008 JM20, 2008 HW1, 2007 VQ4
`844`	Los Molinos Obs. in Uruguay, 1 in MPEC 2008-J57 -- 85839
`130`	Lumezzane Obs. in Italy, 5 in MPEC 2008-J57 -- 2005 NB7, 2005 GG, 85628, 68278, 184266
`118`	Modra Obs. in Slovakia, 2 in MPECs 2008-J58 & 2008-J59 -- 2008 JN20, 2008 JM20
`474`	Mt. John Obs. in New Zealand, 2 in MPECs 2008-J58 & 2008-J59 -- 2008 JN20, 2008 JM20
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-J57 -- 86667
`A13`	Naef Obs. in Switzerland, 4 in MPECs 2008-J57 & 2008-J59 -- 2008 JU2, 2008 JN20, 2008 JJ, 139289
`557`	Ondrejov Obs. in the Czech Republic, 1 in MPEC 2008-J57 -- 2005 NB7
`854`	Sabino Canyon Obs. in Arizona, 2 in MPECs 2008-J58 & 2008-J59 -- 2008 JN20, 2008 JM20
`204`	Schiaparelli Obs. in Italy, 8 in MPEC 2008-J57 -- 2008 JS19, 2008 HS3, 2008 HK, 2008 HG, 2008 ES, 2007 VR183, 2005 SE71, 2004 JG6
`E12`	Siding Spring Survey (SSS) in New South Wales, 5 in MPEC 2008-J57 -- 2008 JR14, 2005 GO21, 1998 HK3, 1994 AW1, 6456
`F85`	Tiki Obs. in Tahiti, 2 in MPECs 2008-J57 & 2008-J58 -- 2008 JW2, 2008 JM20

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

Impact Risk Monitoring on 11 May '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2354 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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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

2008 HU4	NEODyS	1245	2055-2090	21	2.27e-04	-5.69	-6.01	0	NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/05/10.387."

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 11 May '08

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

1656	Grabbed MPEC 2008-J58 - 2008 JM20 - see above Grabbed MPEC 2008-J59 - 2008 JN20 - see above
1245	Noted that NEODyS has updated its 2008 HU4 risk assessment - see above
1244	Grabbed MPEC 2008-J57 - Daily Orbit Update - see above

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