Contents  on 15 September '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 15 September '10

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

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and eight updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of thirteen 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 15 September '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-R114 - "20:12 UT" - 2010 RM122

<< DOU on 15 Sept. '10 >>  MPEC 2010-R113 - "06:10 UT" - Daily Orbit Update

Observers  on 15 September '10

Fourteen observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2010-R113 -- 2010 PY22
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2010-R113 -- 19764
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-R114 -- 2010 RM122
J95Great Shefford Obs. in England, 1 in MPEC 2010-R113 -- 2010 RM82
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-R113 -- 2010 LY63
695]Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) in Arizona, 5 in MPEC 2010-R113 -- 2010 RM80, 2010 PS66, 2010 PS65, 2010 OB, 2010 LH14
J75La Sagra Obs. in Spain, 3 in MPEC 2010-R113 -- 19764, 7336, 6239
118Modra Obs. in Slovakia, 1 in MPEC 2010-R113 -- 2010 PY22
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-R113 & 2010-R114 -- 2010 RM122, 31221, 5143
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2010-R113 -- 2010 RT80, 2010 RN80, 2010 RJ53
691Spacewatch 0.9m telescope in Arizona, 10 in MPEC 2010-R113 -- 2010 FL, 2007 BG49, 2002 DY3, 2001 FD90, 2000 EY106, 1997 XV11, 1997 GH28, 52768, 137911, 1221
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2010-R113 & 2010-R114 -- 2010 RS30, 2010 RM80, 2010 RM122, 2010 PS66, 2010 NT1, 2010 KZ117, 2005 UL
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2010-R113 -- 138404
I15Wishing Star Obs. in Rhode Island, 4 in MPEC 2010-R113 -- 2010 RK43, 2009 CQ5, 1997 GL3, 138847
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 September '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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.





Notes for Today's Latest Risk Assessments
2010 RA91NEODyS15492022-20901276.45e-06-4.25-4.610NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2010/09/13.197 to 2010/09/14.253."
2010 RM80JPL Sentry15492074-2110221.7e-05-6.67-7.280JPL: "Analysis based on 29 observations spanning 3.1486 days (2010-Sep-11.28495 to 2010-Sep-14.43354)." Diameter approximately 0.009 km. from mean, weighted H=28.0.
NEODyS1549208514.09e-07-8.18-8.180NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2010/09/11.286 to 2010/09/14.434."
2010 PS65JPL Sentry1549R E M O V E DJPL: Risk listing removed at 0949 UTC.

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 September '10

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

2109Grabbed MPEC 2010-R114 - 2010 RM122 - see above
1549Noted that JPL Sentry has removed 2010 PS65 as an impact risk - see above
Noted that NEODyS has posted 2010 RA91 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 RM80 risk assessment - see above
Noted that NEODyS has updated its 2010 RM80 risk assessment - see above
Grabbed MPEC 2010-R113 - Daily Orbit Update - see above