Contents  on 11 January '10


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.

NEOCP Activity  on 11 January '10

The MPC's NEO Confirmation Page has 5 listings: 3 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of eighteen listings on the NEOCP at some point today.

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

New MPECs  on 11 January '10

Minor Planet Electronic Circulars

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

MPEC 2010-A59 - "15:43 UT" - 2010 AL30

MPEC 2010-A58 - "15:02 UT" - 2010 AJ30

MPEC 2010-A57 - "14:57 UT" - 2010 AH30

MPEC 2010-A56 - "14:54 UT" - 2010 AG30

MPEC 2010-A55 - "14:41 UT" - 2010 AF30

MPEC 2010-A54 - "14:37 UT" - 2010 AE30

<< DOU on 11 Jan. '10 >>  MPEC 2010-A53 - "07:11 UT" - Daily Orbit Update

MPEC 2010-A52 - "01:33 UT" - 2008 RH1

Observers  on 11 January '10

Sixteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 17 in MPECs 2010-A53 & 2010-A58 -- 2010 AR1, 2010 AO2, 2010 AL2, 2010 AL, 2010 AJ30, 2010 AJ3, 2010 AJ, 2010 AE3, 2010 AE, 2009 YG, 2009 XO, 2009 XF2, 2009 WZ7, 2009 VO24, 2009 KC3, 2008 GD, 2004 LC2
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2010-A53 -- 2007 MK13, 5646
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2010-A53 & 2010-A58 -- 2010 AJ30, 162273, 153201
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-A53 -- 2010 AK, 2010 AE, 2009 XF2
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2010-A59 -- 2010 AL30
355Hadano Obs. in Japan, 1 in MPEC 2010-A58 -- 2010 AJ30
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2010-A53 -- 2007 MK13, 2005 MC
704LINEAR in New Mexico, 7 in MPECs 2010-A53, 2010-A54 & 2010-A59 -- 2010 AL30, 2010 AE30, 2010 AE3, 35432, 215188, 162038, 4486
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-A52 & 2010-A53 -- 2009 WR52, 2008 RH1
932McCarthy Obs. in Connecticut, 1 in MPEC 2010-A58 -- 2010 AJ30
900Moriyama Obs. in Japan, 1 in MPEC 2010-A58 -- 2010 AJ30
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2010-A53, 2010-A54, 2010-A55, 2010-A56, 2010-A57, 2010-A58 & 2010-A59 -- 2010 AL30, 2010 AJ30, 2010 AH30, 2010 AG30, 2010 AF30, 2010 AE30, 2009 KN4, 2000 WP148
A24New Millennium Obs. in Italy, 1 in MPEC 2010-A58 -- 2010 AJ30
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-A58 -- 2010 AJ30
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2010-A53 -- 2010 AJ, 103067
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2010-A53 & 2010-A55 -- 2010 AL, 2010 AF30, 2009 YV6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 January '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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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.





Notes for Today's Latest Risk Assessments
2010 AE30JPL Sentry18202017-21095744.4e-06-4.27-5.010JPL: "Analysis based on 10 observations spanning 1.0811 days (2010-Jan-10.20528 to 2010-Jan-11.28639)." Diameter approximately 0.077 km. from mean, weighted H=23.2.
2009 XOJPL Sentry15002038-208121.4e-07-4.67-4.920JPL: "Analysis based on 194 observations spanning 32.351 days (2009-Dec-09.152 to 2010-Jan-10.503155)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
NEODyS15002038-208641.44e-07-4.66-4.910NEODyS: "Based on 194 optical observations (of which 0 are rejected as outliers) from 2009/12/09.153 to 2010/01/10.504."
2009 WR52NEODyS16312031-2090288.89e-05-5.82-5.940NEODyS: "Based on 26 optical observations (of which 1 are rejected as outliers) from 2009/11/23.220 to 2009/12/09.291."
JPL Sentry15002031-2109511.3e-04-5.72-5.910JPL: "Analysis based on 25 observations spanning 16.072 days (2009-Nov-23.21917 to 2009-Dec-09.290725)." Diameter approximately 0.007 km. from mean, weighted H=28.3.

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 January '10

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

1820Noted that JPL Sentry has posted 2010 AE30 as an impact risk - see above
1631Noted that NEODyS has updated its 2009 WR52 risk assessment - see above
1607Grabbed MPEC 2010-A58 - 2010 AJ30 - see above
Grabbed MPEC 2010-A59 - 2010 AL30 - see above
1500Noted that JPL Sentry has updated its 2009 WR52 risk assessment - see above
Noted that JPL Sentry has updated its 2009 XO risk assessment - see above
Noted that NEODyS has updated its 2009 XO risk assessment - see above
Grabbed MPEC 2010-A53 - Daily Orbit Update - see above
Grabbed MPEC 2010-A54 - 2010 AE30 - see above
Grabbed MPEC 2010-A55 - 2010 AF30 - see above
Grabbed MPEC 2010-A56 - 2010 AG30 - see above
Grabbed MPEC 2010-A57 - 2010 AH30 - see above
0218Grabbed MPEC 2010-A52 - 2008 RH1 - see above