Contents  on 19 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 19 September '10

The MPC's NEO Confirmation Page has 10 listings: 3 new, 7 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and seven updated listings. Of these, eight were "one nighters." So far The Tracking News has counted a total of 22 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 19 September '10

Minor Planet Electronic Circulars

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

MPEC 2010-S26 - "19:05 UT" - 2010 SZ3

MPEC 2010-S25 - "18:47 UT" - 2010 SY3

MPEC 2010-S24 - "18:29 UT" - 2010 SX3

MPEC 2010-S23 - "18:26 UT" - 2010 SW3

<< DOU on 19 Sept. '10 >>  MPEC 2010-S22 - "06:10 UT" - Daily Orbit Update

MPEC 2010-S21 - "01:48 UT" - 2010 SV3

Observers  on 19 September '10

Fourteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2010-S21, 2010-S22, 2010-S23 & 2010-S24 -- 2010 SX3, 2010 SW3, 2010 SV3, 2010 SP3, 2010 SD, 2010 RT3, 2010 RN80, 2010 RM82, 2010 RK43, 2010 RA91, 2007 TY18
703Catalina Sky Survey in Arizona, 1 in MPEC 2010-S21 -- 2010 SV3
448Desert Moon Obs. in New Mexico, 7 in MPEC 2010-S22 -- 2010 RS3, 2010 RN80, 2010 RM82, 2007 TY18, 2001 PH9, 152952, 7839
J95Great Shefford Obs. in England, 1 in MPEC 2010-S22 -- 2010 SE
A17Guidestar Obs. in Germany, 4 in MPECs 2010-S21 & 2010-S22 -- 2010 SV3, 2010 SJ, 2010 SE, 2010 RK42
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-S22 -- 2010 LY63
G89Kachina Obs. in Arizona, 1 in MPEC 2010-S22 -- 2010 RA91
704LINEAR in New Mexico, 11 in MPECs 2010-S21 & 2010-S22 -- 2010 SV3, 2010 SP3, 2010 SF, 2010 RJ4, 2010 RG137, 2010 RC130, 2005 GE59, 85818, 199145, 152952, 4197
I36Los Campitos Obs. in Argentina, 1 in MPEC 2010-S21 -- 2010 SV3
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-S21, 2010-S22, 2010-S23, 2010-S24, 2010-S25 & 2010-S26 -- 2010 SZ3, 2010 SY3, 2010 SX3, 2010 SW3, 2010 SV3, 2010 LL68
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2010-S22, 2010-S23, 2010-S24 & 2010-S25 -- 2010 SY3, 2010 SX3, 2010 SW3, 2010 RW3, 2010 RM80, 2010 RD130, 2010 RA91
I19Tanti Obs. in Argentina, 1 in MPEC 2010-S21 -- 2010 SV3
A98Taurus-1 Obs. in Belarus, 1 in MPEC 2010-S22 -- 2005 GE59
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2010-S22 -- 2005 GE59, 4197
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 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 RA91JPL Sentry1501R E M O V E DJPL: Risk listing removed at 0958 UTC.
2010 RM80JPL Sentry15012085-2110191.3e-05-6.76-7.240JPL: "Analysis based on 47 observations spanning 7.9169 days (2010-Sep-11.28495 to 2010-Sep-19.20187)." Diameter approximately 0.009 km. from mean, weighted H=27.9.
NEODyS1501208513.34e-07-8.25-8.250NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2010/09/11.286 to 2010/09/19.203."

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 19 September '10

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

1911Grabbed MPEC 2010-S23 - 2010 SW3 - see above
Grabbed MPEC 2010-S24 - 2010 SX3 - see above
Grabbed MPEC 2010-S25 - 2010 SY3 - see above
Grabbed MPEC 2010-S26 - 2010 SZ3 - see above
1501Noted that JPL Sentry has removed 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-S22 - Daily Orbit Update - see above
0348Grabbed MPEC 2010-S21 - 2010 SV3 - see above