Contents  on 15 June '10

Resources:

The latest A/CC news is available via framed access, RSS news feed 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.

Radar Astrometry  on 15 June '10

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2000 UTC when the database was dated 15 June

NEOCP Activity  on 15 June '10

The MPC's NEO Confirmation Page has 8 listings: 5 new, 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and three updated listings. Of these, one was a "one nighter."

New MPECs  on 15 June '10

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-L93 - "22:40 UT" - Comet P/2002 LN13 = 2010 L2 (LINEAR)


MPEC 2010-L92 - "22:05 UT" - Comets C/2009 W12, 2009 W13, 2009 W14, 2009 W15, 2009 W16, 2009 X2 (SOHO)


MPEC 2010-L91 - "21:50 UT" - Comets C/2009 W6, 2009 W7, 2009 W8, 2009 W9, 2009 W10, 2009 W11 (SOHO)


MPEC 2010-L90 - "21:35 UT" - Comets C/2009 V5, 2009 V6, 2009 V7, 2009 W3, 2009 W4, 2009 W5 (SOHO)


MPEC 2010-L89 - "18:14 UT" - 2009 MS9


<< DOU on 15 June '10 >>  MPEC 2010-L88 - "06:10 UT" - Daily Orbit Update

Observers  on 15 June '10

A total of 20 observing facilities appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 1 in radar -- 2007 XB10
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPEC 2010-L88 -- 2010 LN14, 2010 LK34, 2010 LF14, 2010 JV39
160Castelmartini Obs. in Italy, 1 in MPEC 2010-L88 -- 2009 WC26
703Catalina Sky Survey in Arizona, 1 in MPEC 2010-L88 -- 2003 QB90
G58Chabot Obs. in northern California, 1 in MPEC 2010-L88 -- 2010 JG88
448Desert Moon Obs. in New Mexico, 4 in MPEC 2010-L88 -- 2010 LR33, 2010 JK33, 161998, 159609
F657Paul Roche in Wales via Faulkes Telescope North in Hawaii, 1 in MPEC 2010-L88 -- 2010 GA34
J95Great Shefford Obs. in England, 3 in MPEC 2010-L88 -- 2010 LC64, 2010 LB64, 2010 LA64
A17Guidestar Obs. in Germany, 1 in MPEC 2010-L88 -- 2010 EH20
704LINEAR in New Mexico, 9 in MPEC 2010-L88 -- 2010 GA34, 2009 XC2, 2009 UV18, 66400, 19764, 154590, 153842, 12923, 887
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPEC 2010-L88 -- 2010 LL34, 2010 LJ61, 2005 VC, 2000 EK26
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2010-L88 -- 5869
H23Pear Tree Obs. in Florida, 2 in MPEC 2010-L88 -- 2009 KD5, 1999 MN
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 2 in MPEC 2010-L88 -- 2010 LZ63, 2010 LY63
461SZTE Asteroid Program in Hungary, 1 in MPEC 2010-L89 -- 2009 MS9
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 18 in MPECs 2010-L90, 2010-L91 & 2010-L92 -- C/2009 X2, C/2009 W9, C/2009 W8, C/2009 W7, C/2009 W6, C/2009 W5, C/2009 W4, C/2009 W3, C/2009 W16, C/2009 W15, C/2009 W14, C/2009 W13, C/2009 W12, C/2009 W11, C/2009 W10, C/2009 V7, C/2009 V6, C/2009 V5
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 9 in MPECs 2010-L90, 2010-L91 & 2010-L92 -- C/2009 X2, C/2009 W8, C/2009 W7, C/2009 W5, C/2009 W4, C/2009 W3, C/2009 V7, C/2009 V6, C/2009 V5
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2010-L88 & 2010-L93 -- 2010 LL34, 2010 LJ61, P/2010 L2, 2010 KU10, 2010 HD33
926Tenagra II Obs. in Arizona, 1 in MPEC 2010-L88 -- 2010 KA8
C51WISE in Earth polar orbit, 1 in MPEC 2010-L93 -- P/2010 L2
198Wildberg Obs. in Germany, 1 in MPEC 2010-L88 -- 2010 EV45
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 June '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 LD64NEODyS15362025-204461.44e-09-8.86-9.210NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/06/14.288 to 2010/06/14.391."
2010 LC64JPL Sentry1536R E M O V E DJPL: Risk listing removed at 0954 UTC.
2010 LZ63JPL Sentry15362014-202123.3e-10-5.59-5.660JPL: "Analysis based on 14 observations spanning 2.0043 days (2010-Jun-12.77512 to 2010-Jun-14.77945)." Diameter approximately 0.360 km. from mean, weighted H=19.9.
NEODyS15362017-202732.57e-10-6.04-6.270NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/06/12.776 to 2010/06/14.780."
2010 LJ61JPL Sentry1536R E M O V E DJPL: Risk listing removed at 0956 UTC.
NEODyS1536R E M O V E D-
2010 LL34JPL Sentry15362024-205123.0e-09-4.87-4.880JPL: "Analysis based on 54 observations spanning 4.9876 days (2010-Jun-09.40204 to 2010-Jun-14.38962)." Diameter approximately 0.490 km. from mean, weighted H=19.2.
NEODyS1536R E M O V E D-

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 15 June '10

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

2300Grabbed MPEC 2010-L92 - Comets C/2009 W12, 2009 W13, 2009 W14, 2009 W15, 2009 W16, 2009 X2 (SOHO) - see above
Grabbed MPEC 2010-L93 - Comet P/2002 LN13 = 2010 L2 (LINEAR) - see above
2205Grabbed MPEC 2010-L90 - Comets C/2009 V5, 2009 V6, 2009 V7, 2009 W3, 2009 W4, 2009 W5 (SOHO) - see above
Grabbed MPEC 2010-L91 - Comets C/2009 W6, 2009 W7, 2009 W8, 2009 W9, 2009 W10, 2009 W11 (SOHO) - see above
2000Noted Radar Astrometry database update - see above
1856Grabbed MPEC 2010-L89 - 2009 MS9 - see above
1536Noted that JPL Sentry has removed 2010 LC64 as an impact risk - see above
Noted that NEODyS has posted 2010 LD64 as an impact risk - see above
Noted that JPL Sentry has removed 2010 LJ61 as an impact risk - see above
Noted that NEODyS has removed 2010 LJ61 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 LL34 risk assessment - see above
Noted that NEODyS has removed 2010 LL34 as an impact risk - see above
Noted that JPL Sentry has posted 2010 LZ63 as an impact risk - see above
Noted that NEODyS has posted 2010 LZ63 as an impact risk - see above
Grabbed MPEC 2010-L88 - Daily Orbit Update - see above
Noted that the NEOCP has become active