15 Jun '07 Major News

136199 Eris & its moon from HST 30 Aug. 2006 Credit: NASA, ESA & M. Brown

From the Hubble Space Telescope on 30 August 2006 comes this image of 136199 Eris (2003 UB313) and its satellite, Dysnomia. See more about this work below. Credit: NASA, ESA & Mike Brown.

Contents on 15 June '07

Minor-Object News -- three items
Minor-Object Science -- two papers
IAU Minor Planet Center
- NEOCP Activity -- eight listings: 4 new, 4 updated
- New MPECs -- nine MPECs
- Observers -- 52 observing facilities
Impact Risk Monitoring -- three objects reported
Chronology

WELCOME to A/CC's prototype daily news publication designed to be the viewing end of a planned autonomous 24-hour news service. The new tools and this publication format are working well enough now to share with readers. It is expected that this approach will require less time to maintain than our previous news and small asteroid pages, which were retired on May 14th. There's still more development ahead and there probably will be some glitches along the way, but this is what's needed to keep up with the increasing pace of minor-object news. The CRT page will be maintained separately for a little while longer, until all of this is working smoothly. And the CRT and small-asteroid ephemerides will be kept going.

Minor-Object News on 15 June '07

"The Dwarf Planet Known as Eris is More Massive than Pluto, New Data Shows," Caltech 14 June - Quote: "New data shows that the dwarf planet Eris is 27 percent more massive than Pluto, thereby strengthening the decree last year that there are eight planets in the solar system and a growing list of dwarf planets."
- "Astronomers Measure Mass of Largest Dwarf Planet," Hubble Space Telescope 14 June - Quote: "NASA's Hubble Space Telescope has teamed up with the W.M. Keck Observatory to precisely measure the mass of Eris, the largest member of a new class of dwarf planets in our solar system. Eris is 1.27 times the mass of Pluto, formerly the largest member of the Kuiper Belt of icy objects beyond Neptune." - Note: See image above.
"Dawn ELV Status Report," NASA KSC 14 June - Quote: "NASA is investigating a minor mishap affecting the Dawn spacecraft. On June 11, during a procedure to prepare the spacecraft for spin-balance testing, the back of a solar array panel was slightly damaged by a technician's tool. No solar cells were broken. The necessary minor repairs will be made this weekend. There is no impact to the launch date of July 7."

Minor-Object Science on 15 June '07

"The Unusual Spectrum of Comet 96P/Machholz" by Langland-Shula, Laura E. with Graeme H. Smith, abstract & PDF at arXiv.org 15 June - Quote: "We report spectra from 3000-5900 A for comet 96P/Machholz, obtained on 2007 Apr 27 UT with the 3-m Shane telescope at Lick Observatory. The spectra are extremely carbon poor, and show a prominent NH_2 series, but no CN emission... Though 96P is depleted in C_2 and C_3 relative to NH, it is even more depleted in CN than other so-called 'carbon-chain depleted' comets."
"Stability and Formation of the Resonant System HD 73526" by Sandor, Zs. with W. Kley, P. Klagyivik, abstract & PDF at arXiv.org 15 June - Quote: "We can conclude that based on radial velocity measurements to date, it is probable that during the formation and early evolution of the systems HD 73526 and HD 128311 the adiabatic migration, which has brought the systems into a protective 2 :1 resonance, has been followed by a sudden perturbative event. This perturbative event could be either the fast dispersal of the circumstellar disk or a planet-planet scattering."

NEOCP Activity on 15 June '07

The MPC's NEO Confirmation Page has 8 listings: 4 new, 4 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and four updated listings. Of these, five were "one nighters." Major News counted a total of twelve objects listed on the NEOCP at some point on this day.

New MPECs on 15 June '07

Minor Planet Electronic Circulars

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

MPEC 2007-L57 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2007-L58 time-stamped "15:10 UT" - Comet P/2007 H1 (McNaught) - see below
MPEC 2007-L59 time-stamped "15:13 UT" - Comet P/2007 H3 (Garradd) - see below
MPEC 2007-L60 time-stamped "15:17 UT" - Comet C/2007 JA21 (LINEAR) - see below
MPEC 2007-L61 time-stamped "15:21 UT" - Comet C/2007 K1 (Lemmon) - see below
MPEC 2007-L62 time-stamped "15:26 UT" - Comet C/2007 K3 (Siding Spring) - see below
MPEC 2007-L63 time-stamped "15:33 UT" - Comet C/2007 K4 (Gibbs) - see below
MPEC 2007-L64 time-stamped "15:38 UT" - Comet C/2007 K5 (Lovejoy) - see below
MPEC 2007-L65 time-stamped "15:59 UT" - Observations of Comets

MPEC 2007-L65 - "15:59 UT" - Observations of Comets

PK06H30R P/2006 HR30 (Siding Spring) from Catalina Station (Catalina Sta.) (April 22.17p3 & 26.14-15p3) and Ageo Obs. (May 19.49p2)
CK07G010 C/2007 G1 (LINEAR) from Panker Obs. (May 23.92-94p3), Iluro Obs. (June 7.95-96p2), Carmelita Obs. (June 8.91-92p3 & 10.90-91p3), Murcia Obs. (June 8.00p2, 9.94-95p3 & 11.92-93p3), Montcabre Obs. (June 9.11-12p3 & 12.90p3), Szamotuly-Galowo Obs. (June 9.87p3), LONEOS (June 10.39-43p3), Kitami Obs. (June 11.59-61p3), and Table Mtn. Obs. (June 13.29-30p4)
CK07E020 C/2007 E2 (Lovejoy) from Siegen Obs. (May 23.97p2), Panker Obs. (May 24.03-04p5 & June 9.92-94p5), Ageo Obs. (June 2.54-55p3 & 11.65-66p3), Montana Blanca Obs. (June 6.92p1), the SZTE Asteroid Program (SZTE) (June 7.83-84p3, 13.85p1 & 13.90-92p4), Montcabre Obs. (June 8.94p3 & 11.90p3), Masquefa Obs. (June 8.98-99p3), Murcia Obs. (June 8.98p3, 9.91-92p3, 11.90p3, 12.90-91p3 & 13.91-92p3), Hobbs Obs. (June 9.19-22p3 & 12.14-17p3), Remanzacco Obs. (June 9.93p1), Four Winds Obs. (June 10.14-16p4, 11.14-16p4, 12.19-22p6 & 13.12-15p5), Hiratsuka Obs. (June 10.53p3), Santa Pola Obs. (June 10.94-95p3), La Puebla de Vallbona Obs. (Vallbona Obs.) (June 11.89p3), Posadas Obs. (June 12.92-93p3 & 13.91-93p3), Table Mtn. Obs. (June 13.23-25p4), MPC code J55 (June 13.88-89p3 & 14.91-92p3), and La Murta Obs. (June 13.90p3)
CK06V13Z C/2006 VZ13 (LINEAR) from Panker Obs. (May 23.99-00p3), MPC code B05 (May 25.93-94p5), SZTE (June 8.03p4), Masquefa Obs. (June 9.09-10p3), Montcabre Obs. (June 9.13p3), Greiner Research Obs. (June 9.34-35p10), Szamotuly-Galowo Obs. (June 10.02p3 & 12.04-05p2), Iluro Obs. (June 10.13p3), Carmelita Obs. (June 10.95p3), Ageo Obs. (June 11.75-76p2), La Murta Obs. (June 13.89p3), and Cordell-Lorenz Obs. (June 14.33-39p5)
CK06V010 C/2006 V1 (Catalina) from El Leoncito Obs. (June 4.97-00p5), Vega del Thader Obs. (June 10.87p3), Vallbona Obs. (June 11.86-87p3), La Murta Obs. (June 13.86p3), and the Siding Spring Survey (SSS) (June 14.42-43p3)
CK06S020 C/2006 S2 (LINEAR) from the Catalina Sky Survey (CSS) (May 20.41-44p3 & June 9.37-38p4) and Table Mtn. Obs. (June 13.34-36p4)
CK06P010 C/2006 P1 (McNaught) from RAS Obs. Biggera Waters (May 22.45p2), El Leoncito Obs. (June 2.95-97p4, 3.94-97p5 & 4.94-96p5), and RAS Obs. Victoria (June 9.45-46p2)
CK06O02F C/2006 OF2 (Broughton) from Reedy Creek Obs. (June 8.70-71p5 & 11.80-81p3), Kambah Obs. (June 10.74-75p2), and Table Mtn. Obs. (June 13.44-45p4)
CK06K040 C/2006 K4 (NEAT) from SSS (June 9.75p1 & 9.79p1) and Mt. John Obs. (June 10.71p3)
CK05S040 C/2005 S4 (McNaught) from Vega del Thader Obs. (June 9.11p5) and Cordell-Lorenz Obs. (June 14.34-37p2, 15.30p1 & 15.37p1)
CK05L030 C/2005 L3 (McNaught) from Purple Mtn. Obs. XuYi Station (June 8.64-77p8), Carmelita Obs. (June 8.93-94p3 & 10.86-88p3), Masquefa Obs. (June 9.04-07p3), Szamotuly-Galowo Obs. (June 9.90p1, 9.95p2 & 14.91p5), Murcia Obs. (June 9.97p3), Vega del Thader Obs. (June 10.95-96p6), Ageo Obs. (June 12.63-64p3), La Murta Obs. (June 13.87-88p3), Posadas Obs. (June 13.97-99p3), Montcabre Obs. (June 14.90p3), and Greiner Research Obs. (June 15.18-19p10)
CK03W42T C/2003 WT42 (LINEAR) from Montcabre Obs. (June 8.91p3), Hiratsuka Obs. (June 10.47p2), Vega del Thader Obs. (June 10.88-90p5), Santa Pola Obs. (June 10.91p3), Vallbona Obs. (June 11.87-88p3), and Posadas Obs. (June 12.95-97p3)
CK02V94Q C/2002 VQ94 (LINEAR) from Hiratsuka Obs. (June 10.55-56p2), Torredembarra Obs. (June 10.91-92p3), Santa Pola Obs. (June 10.93p3), and Montcabre Obs. (June 12.86-87p3)
0186 186P/Garradd from El Leoncito Obs. (June 1.00-01p3, 3.04-05p3 & 4.03-05p3) and Kambah Obs. (June 12.45-47p2)
0182 182P/LONEOS from Catalina Sta. (April 20.43-44p3 & 26.17p3)
0175 175P/Hergenrother from Catalina Sta. (April 26.43p3) and the Spacewatch 0.9m telescope (June 9.34-37p3 & 13.35-38p3)
0162 162P/Siding Spring from Catalina Sta. (April 20.38-39p3) and Spacewatch 0.9m (May 7.14-18p3)
0099 99P/Kowal 1 from Montcabre Obs. (June 2.91-92p3) and Vallbona Obs. (June 11.88-89p3)
0096 96P/Machholz 1 from Catalina Sta. (April 22.48-49p3), Ageo Obs. (May 2.74-76p2 & June 5.68p3), Panker Obs. (May 23.96-98p5), MPC code B05 (May 25.95p9), Murcia Obs. (June 9.01p3, 9.96p3, 11.95p3, 12.93-94p3 & 13.94-95p3), Montcabre Obs. (June 9.05p3 & 14.91p3), Masquefa Obs. (June 9.08p3), Vega del Thader Obs. (June 9.12-13p4 & 10.93-94p10), Szamotuly-Galowo Obs. (June 9.89-90p4, 11.99-00p5 & 14.90-91p5), Iluro Obs. (June 10.04-05p3), Posadas Obs. (June 13.01-02p3 & 13.95-96p3), and La Murta Obs. (June 13.88p3)
0014 14P/Wolf from the Mt. Lemmon Survey (MLS) (April 24.41-43p4) and Catalina Sta. (April 26.42p3)

MPEC 2007-L64 - "15:38 UT" - Comet C/2007 K5 (Lovejoy)

CK07K050 C/2007 K5 (Lovejoy) (i=64.8°, q=1.155 AU, TP=2007 May 2.415 TT) from Kambah Obs. (June 10.35-36p2), Tiki Obs. (June 11.19-21p3), and Brooklyn Park Obs. (June 11.38-40p2)

MPEC 2007-L63 - "15:33 UT" - Comet C/2007 K4 (Gibbs)

CK07K040 C/2007 K4 (Gibbs) (i=98.6°, q=3.527 AU, TP=2007 May 4.319 TT) from SSS (May 26.68p1), Cordell-Lorenz Obs. (June 7.29p1, 8.13p1, 8.26p1, 11.18-25p3 & 13.16-22p3), San Marcello Pistoiese Obs. (June 7.89p3), Buchloe Obs. (June 7.93p1), KLENOT (June 8.95-97p7), Powell Obs. (June 9.26-27p3), Kambah Obs. (June 12.52-53p2), Table Mtn. Obs. (June 13.27-29p4), and Montcabre Obs. (June 13.93p1)

MPEC 2007-L62 - "15:26 UT" - Comet C/2007 K3 (Siding Spring)

CK07K030 C/2007 K3 (Siding Spring) (i=16.3°, q=2.051 AU, TP=2008 Apr. 21.832 TT) from Vega del Thader Obs. (June 4.86-88p8), Mt. John Obs. (June 11.32-33p2), and Cordell-Lorenz Obs. (June 13.11-14p2)

MPEC 2007-L61 - "15:21 UT" - Comet C/2007 K1 (Lemmon)

CK07K010 C/2007 K1 (Lemmon) (i=108.5°, q=9.253 AU, TP=2007 Apr. 28.898 TT) from Cordell-Lorenz Obs. (June 11.21p1 & 11.25p1) and Table Mtn. Obs. (June 13.31-32p4)

MPEC 2007-L60 - "15:17 UT" - Comet C/2007 JA21 (LINEAR)

CK07J21A C/2007 JA21 (LINEAR) (i=89.8°, q=5.363 AU, TP=2006 Nov. 12.5394 TT) from Montcabre Obs. (June 10.91p3), Ageo Obs. (June 11.70-71p3), Cordell-Lorenz Obs. (June 13.25-28p2), and Table Mtn. Obs. (June 13.25-27p4)

MPEC 2007-L59 - "15:13 UT" - Comet P/2007 H3 (Garradd)

PK07H030 P/2007 H3 (Garradd) (q=1.829 AU, Q=5.171 AU, TP=2007 Aug. 15.3447 TT) from Mt. John Obs. (June 11.34-35p3) and Kambah Obs. (June 12.49p2)

MPEC 2007-L58 - "15:10 UT" - Comet P/2007 H1 (McNaught)

PK07H010 P/2007 H1 (McNaught) (q=2.282 AU, Q=5.076 AU, TP=2007 Aug. 17.2912 TT) from Ageo Obs. (June 11.74p2), Table Mtn. Obs. (June 13.46-47p4), and SSS (June 13.75-78p4)

<< DOU on 15 June '07 >> MPEC 2007-L57 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K07L15B 2007 LB15 (arc=1 day, H=19.1 ~513m) from Astronomical Research Obs. (ARO) (June 14.36-37p6)
K07L15A 2007 LA15 (arc=1 day, H=19.3 ~467m) from Jim Young via Table Mtn. Obs. (June 14.18-19p4) and ARO (June 14.23-24p6)
K07L00S 2007 LS (Q=4.493 AU, arc=7 days, H=17.9 ~891m) from the Spacewatch 1.8m telescope (June 14.24p3 & 15.23-24p2)
Observations of small asteroids (H>22.0)
K07L00T 2007 LT (arc=5 days, H=22.4 ~112m) from Desert Moon Obs. (June 14.32-33p3)
K07K02D 2007 KD2 (Q=4.436 AU, arc=27 days, H=23.3 ~74m) from ARO (June 14.21-22p3)
K07E00O 2007 EO (arc=97 days, H=22.8 ~93m) from Spacewatch 1.8m (June 14.26-27p2)
Observations of other objects
K07L08V 2007 LV8 (arc=2 days, H=19.9 ~355m) from LONEOS (June 14.21-29p4)
K07L00V 2007 LV (arc=5 days, H=18.1 ~812m) from SSS (June 14.82p1)
K07L00L 2007 LL (arc=6 days, H=19.7 ~389m) from Desert Moon Obs. (June 14.20p1)
K07L00F 2007 LF (arc=8 days, H=20.6 ~257m) from Petit Jean Mtn. South Obs. (PJMSO) (June 14.35p3) and Montcabre Obs. (June 14.93-94p3)
K07K07G 2007 KG7 (q=0.240 AU, arc=19 days, H=20.6 ~257m) from Spacewatch 1.8m (June 14.19-20p2)
K07J40E 2007 JE40 (arc=30 days, H=20.1 ~323m) from ARO (June 14.25-26p3)
K07J02X 2007 JX2 (arc=37 days, H=19.4 ~446m) from Spacewatch 1.8m (June 15.18-19p3)
K07G05Z 2007 GZ5 (arc=60 days, H=21.3 ~186m) from ARO (June 13.10-12p3 & 14.10-12p3)
K07G00C 2007 GC (arc=68 days, H=21.4 ~178m) from ARO (June 14.14-16p3)
K07F42V 2007 FV42 (arc=86 days, H=17.8 ~933m) from PJMSO (June 14.36-37p6)
K07E00M 2007 EM (arc=97 days, H=20.7 ~245m) from ARO (June 14.14-18p3 at V=22.5-7)
K07DA3T 2007 DT103 (arc=108 days, H=19.5 ~426m) from Desert Moon Obs. (June 14.15-18p3)
K07D40Z 2007 DZ40 (Q=4.841 AU, arc=112 days, H=18.5 ~676m) from PJMSO (June 14.37-38p7)
K06P00W 2006 PW (arc=2 opp, H=18.1 ~812m) from ARO (June 14.32-34p3)
K06K89E 2006 KE89 (i=45.1°, q=0.211 AU, arc=3 opp, H=16.5 ~1.70 km) from Four Winds Obs. (June 13.19p2 & 14.18-19p3) and CSS (June 14.27-30p4)
K06H29R 2006 HR29 (arc=2 opp, H=20.6 ~257m) from ARO (June 14.18-20p3)
K05C00P 2005 CP (arc=3 opp, H=20.9 ~224m) from ARO (June 14.35-36p3)
K04S09T 2004 ST9 (arc=2 opp, H=18.1 ~812m) from PJMSO (June 14.38-39p5)
K04L11Z 2004 LZ11 (arc=3 opp, H=19.3 ~467m) from Spacewatch 0.9m (June 14.23-27p3)
K04F18N 2004 FN18 (arc=5 opp, H=17.6 ~1.02 km) from ARO (June 14.32-34p3)
K03R07X 2003 RX7 (arc=3 opp, H=18.5 ~676m) from Spacewatch 1.8m (June 14.37-39p3)
J91L00H 1991 LH (i=53.2°, q=0.363 AU, arc=5 opp, H=17.9 ~891m) from ARO (June 14.30-31p2)
D6818 136818 1997 MW1 from Goodricke-Pigott Obs. (June 13.42-45p6 & 14.42-46p8)
A5140 105140 2000 NL10 from CSS (June 14.40-43p4)
88263 88263 2001 KQ1 from LINEAR (June 14.17-21p5)
85275 85275 1994 LY from PJMSO (June 14.39-40p5)
04947 4947 Ninkasi (1988 TJ1) from LONEOS (June 14.22-30p4)
03551 3551 Verenia (1983 RD) from Spacewatch 0.9m (June 14.17-20p3)
01866 1866 Sisyphus (1972 XA) from CSS (June 14.16-19p4)

Observers on 15 June '07

A total of 52 observing facilities appeared in this day's MPECs.

`349`	Ageo Obs. in Japan, 7 in MPECs 2007-L58, 2007-L60 & 2007-L65 -- P/2006 HR30, C/2007 E2, C/2006 VZ13, C/2005 L3, 96, C/2007 JA21, P/2007 H1
`H55`	Astronomical Research Obs. in Illinois, 12 in MPEC 2007-L57 -- 2007 LB15, 2007 LA15, 2007 KD2, 2007 JE40, 2007 GZ5, 2007 GC, 2007 EM, 2006 PW, 2006 HR29, 2005 CP, 2004 FN18, 1991 LH
`D87`	Brooklyn Park Obs. in South Australia, 1 in MPEC 2007-L64 -- C/2007 K5
`215`	Buchloe Obs. in Germany, 1 in MPEC 2007-L63 -- C/2007 K4
`B20`	Carmelita Obs. in Spain, 3 in MPEC 2007-L65 -- C/2007 G1, C/2006 VZ13, C/2005 L3
`703`	Catalina Sky Survey in Arizona, 4 in MPECs 2007-L57 & 2007-L65 -- C/2006 S2, 2006 KE89, 105140, 1866
`693`	Catalina Station in Arizona, 6 in MPEC 2007-L65 -- P/2006 HR30, 182, 175, 162, 96, 14
`850`	Cordell-Lorenz Obs. in Tennessee, 6 in MPECs 2007-L60, 2007-L61, 2007-L62, 2007-L63 & 2007-L65 -- C/2006 VZ13, C/2005 S4, C/2007 K4, C/2007 K3, C/2007 K1, C/2007 JA21
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2007-L57 -- 2007 LT, 2007 LL, 2007 DT103
`808`	El Leoncito Obs. in Argentina, 3 in MPEC 2007-L65 -- C/2006 V1, C/2006 P1, 186
`762`	Four Winds Obs. in Michigan, 2 in MPECs 2007-L57 & 2007-L65 -- C/2007 E2, 2006 KE89
`683`	Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2007-L57 -- 136818
`H51`	Greiner Research Obs. in Wisconsin, 2 in MPEC 2007-L65 -- C/2006 VZ13, C/2005 L3
`D88`	Hiratsuka Obs., 3 in MPEC 2007-L65 -- C/2007 E2, C/2003 WT42, C/2002 VQ94
`750`	Hobbs Obs. in Wisconsin, 1 in MPEC 2007-L65 -- C/2007 E2
`B19`	Iluro Obs. in Spain, 3 in MPEC 2007-L65 -- C/2007 G1, C/2006 VZ13, 96
`246`	KLENOT in the Czech Republic, 1 in MPEC 2007-L63 -- C/2007 K4
`415`	Kambah Obs. in Australia, 5 in MPECs 2007-L59, 2007-L63, 2007-L64 & 2007-L65 -- C/2006 OF2, 186, C/2007 K5, C/2007 K4, P/2007 H3
`400`	Kitami Obs. in Japan, 1 in MPEC 2007-L65 -- C/2007 G1
`704`	LINEAR in New Mexico, 1 in MPEC 2007-L57 -- 88263
`699`	LONEOS in Arizona, 3 in MPECs 2007-L57 & 2007-L65 -- C/2007 G1, 2007 LV8, 4947
`J76`	La Murta Obs. in Spain, 5 in MPEC 2007-L65 -- C/2007 E2, C/2006 VZ13, C/2006 V1, C/2005 L3, 96
`J67`	La Puebla de Vallbona Obs. in Spain, 4 in MPEC 2007-L65 -- C/2007 E2, C/2006 V1, C/2003 WT42, 99
`B05`	MPC code B05, 2 in MPEC 2007-L65 -- C/2006 VZ13, 96
`J55`	MPC code J55, 1 in MPEC 2007-L65 -- C/2007 E2
`232`	Masquefa Obs. in Spain, 4 in MPEC 2007-L65 -- C/2007 E2, C/2006 VZ13, C/2005 L3, 96
`J46`	Montana Blanca Obs., 1 in MPEC 2007-L65 -- C/2007 E2
`213`	Montcabre Obs. in Spain, 11 in MPECs 2007-L57, 2007-L60, 2007-L63 & 2007-L65 -- C/2007 G1, C/2007 E2, C/2006 VZ13, C/2005 L3, C/2003 WT42, C/2002 VQ94, 99, 96, C/2007 K4, C/2007 JA21, 2007 LF
`474`	Mt. John Obs. in New Zealand, 3 in MPECs 2007-L59, 2007-L62 & 2007-L65 -- C/2006 K4, C/2007 K3, P/2007 H3
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2007-L65 -- 14
`J78`	Murcia Obs. in Spain, 4 in MPEC 2007-L65 -- C/2007 G1, C/2007 E2, C/2005 L3, 96
`A32`	Panker Obs. in Germany, 4 in MPEC 2007-L65 -- C/2007 G1, C/2007 E2, C/2006 VZ13, 96
`H45`	Petit Jean Mtn. South Obs. in Arkansas, 5 in MPEC 2007-L57 -- 2007 LF, 2007 FV42, 2007 DZ40, 2004 ST9, 85275
`J53`	Posadas Obs. in Spain, 4 in MPEC 2007-L65 -- C/2007 E2, C/2005 L3, C/2003 WT42, 96
`649`	Powell Obs. in Kansas, 1 in MPEC 2007-L63 -- C/2007 K4
`D29`	Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2007-L65 -- C/2005 L3
`E26`	RAS Obs. Biggera Waters, 1 in MPEC 2007-L65 -- C/2006 P1
`E03`	RAS Obs. Victoria, 1 in MPEC 2007-L65 -- C/2006 P1
`428`	Reedy Creek Obs. in Queensland, 1 in MPEC 2007-L65 -- C/2006 OF2
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2007-L65 -- C/2007 E2
`461`	SZTE Asteroid Program in Hungary, 2 in MPEC 2007-L65 -- C/2007 E2, C/2006 VZ13
`104`	San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2007-L63 -- C/2007 K4
`J49`	Santa Pola Obs. in Spain, 3 in MPEC 2007-L65 -- C/2007 E2, C/2003 WT42, C/2002 VQ94
`E12`	Siding Spring Survey in New South Wales, 5 in MPECs 2007-L57, 2007-L58, 2007-L63 & 2007-L65 -- C/2006 V1, C/2006 K4, C/2007 K4, P/2007 H1, 2007 LV
`510`	Siegen Obs. in Germany, 1 in MPEC 2007-L65 -- C/2007 E2
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2007-L57 & 2007-L65 -- 175, 162, 2004 LZ11, 3551
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2007-L57 -- 2007 LS, 2007 EO, 2007 KG7, 2007 JX2, 2003 RX7
`B30`	Szamotuly-Galowo Obs. in Poland, 4 in MPEC 2007-L65 -- C/2007 G1, C/2006 VZ13, C/2005 L3, 96
`673`	Table Mtn. Obs. in southern California, 8 in MPECs 2007-L58, 2007-L60, 2007-L61, 2007-L63 & 2007-L65 -- C/2007 G1, C/2007 E2, C/2006 S2, C/2006 OF2, C/2007 K4, C/2007 K1, C/2007 JA21, P/2007 H1
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2007-L57 -- 2007 LA15
`F85`	Tiki Obs. in Tahiti, 1 in MPEC 2007-L64 -- C/2007 K5
`A03`	Torredembarra Obs., 1 in MPEC 2007-L65 -- C/2002 VQ94
`J70`	Vega del Thader Obs. in Spain, 6 in MPECs 2007-L62 & 2007-L65 -- C/2006 V1, C/2005 S4, C/2005 L3, C/2003 WT42, 96, C/2007 K3

Impact Risk Monitoring on 15 June '07

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2358 UTC)
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2080.
For the latest official risk assessments, 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

2007 LS	JPL	2146	2064-2103	6	8.6e-09	-5.00	-5.57	0	JPL: "Analysis based on 30 observations spanning 6.9507 days (2007-Jun-08.29124 to 2007-Jun-15.24189)." Diameter approximately 0.823 km. from mean, weighted H=18.1.
2007 LS	NEODyS	0959	2064-2078	2	8.29e-10	-5.78	-5.85	0	NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2007/06/08.292 to 2007/06/15.243."

2007 LB15	NEODyS	2247	2018-2080	54	4.75e-07	-2.90	-3.62	0	NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2007/06/13.347 to 2007/06/14.373."
2007 LB15	JPL	2146	2017-2106	361	1.1e-06	-2.61	-3.26	0	JPL: "Analysis based on 15 observations spanning 1.0257 days (2007-Jun-13.3467 to 2007-Jun-14.372365)." Diameter approximately 0.574 km. from mean, weighted H=18.9.

2007 LA15	JPL	1120	2063-2105	14	2.7e-09	-6.06	-6.93	0	JPL: "Analysis based on 28 observations spanning .92385 days (2007-Jun-13.31903 to 2007-Jun-14.242875)." Diameter approximately 0.500 km. from mean, weighted H=19.2.
2007 LA15	NEODyS	2146	R E M O V E D

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

For a list of all risk-rated objects recently in view, see our ephemerides page.

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from an 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" for more about all this.

Chronology on 15 June '07

Times are UTC for when the items were noted by Major News.

2247	Noted that NEODyS has updated its 2007 LB15 risk assessment - see above
2147	Grabbed MPEC 2007-L60 - Comet C/2007 JA21 (LINEAR) - see above Grabbed MPEC 2007-L65 - Observations of Comets - see above
2146	Noted that NEODyS has removed 2007 LA15 as an impact risk - see above Noted that JPL has updated its 2007 LB15 risk assessment - see above Noted that JPL has updated its 2007 LS risk assessment - see above Grabbed MPEC 2007-L58 - Comet P/2007 H1 (McNaught) - see above Grabbed MPEC 2007-L59 - Comet P/2007 H3 (Garradd) - see above Grabbed MPEC 2007-L61 - Comet C/2007 K1 (Lemmon) - see above Grabbed MPEC 2007-L62 - Comet C/2007 K3 (Siding Spring) - see above Grabbed MPEC 2007-L63 - Comet C/2007 K4 (Gibbs) - see above Grabbed MPEC 2007-L64 - Comet C/2007 K5 (Lovejoy) - see above
1120	Noted that JPL has posted 2007 LA15 as an impact risk - see above
0959	Noted that NEODyS has updated its 2007 LS risk assessment - see above Grabbed MPEC 2007-L57 - Daily Orbit Update - see above
0229	Added MOS paper, "Stability and Formation of the Resonant System HD 73526" - see above Added MOS paper, "The Unusual Spectrum of Comet 96P/Machholz" - see above Added link to news story, "Astronomers Measure Mass of Largest Dwarf Planet" Added link to news story, "The Dwarf Planet Known as Eris is More Massive than Pluto, New Data Shows" Added link to news story, "Dawn ELV Status Report"

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