Contents  on 28 October '09


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 28 October '09

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of six 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 28 October '09

Minor Planet Electronic Circulars

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

<< DOU on 28 Oct. '09 >>  MPEC 2009-U124 - "06:12 UT" - Daily Orbit Update

Observers  on 28 October '09

Fifteen observing facilities appear in today's MPEC.

CodeObserver / observatory
160Castelmartini Obs. in Italy, 3 in MPEC 2009-U124 -- 2002 NP1, 2000 CO101, 36284
703Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2009-U124 -- 2009 SG2, 2009 RN, 2009 KC3, 2007 VH186, 2006 UR, 137805, 3553
448Desert Moon Obs. in New Mexico, 5 in MPEC 2009-U124 -- 2009 TL8, 2009 TL4, 2009 SP171, 2009 SK1, 36284
379Hamamatsu-Yuto Obs. in Japan, 8 in MPEC 2009-U124 -- 2009 TK8, 2009 ST19, 2009 RN, 2005 RQ6, 2002 NW16, 2001 GQ2, 1999 HY1, 719
704LINEAR in New Mexico, 8 in MPEC 2009-U124 -- 2005 RQ6, 1999 HY1, 218017, 216689, 17274, 154244, 143678, 3288
699LONEOS in Arizona, 1 in MPEC 2009-U124 -- 2009 UU1
J75La Sagra Obs. in Spain, 2 in MPEC 2009-U124 -- 2009 UK28, 2009 RN
J131program code 1 via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2009-U124 -- 2009 TK12
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPEC 2009-U124 -- 2009 SM, 66272, 38091
B94Petrozavodsk Obs. in Russia, 1 in MPEC 2009-U124 -- 159402
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 2 in MPEC 2009-U124 -- 2009 UX87, 2009 UX19
587Sormano Obs. in Italy, 2 in MPEC 2009-U124 -- 2009 UW19, 2009 UL20
691Spacewatch 0.9m telescope in Arizona, 12 in MPEC 2009-U124 -- 2009 UM, 2009 UC19, 2009 SO103, 2009 RD1, 2002 XA40, 2002 WQ, 1999 HY1, 68359, 221455, 21088, 162168, 152828
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2009-U124 -- 2009 UV18, 2009 US87, 2009 UL28, 2009 SS104, 2009 SD229, 2008 UB95, 2006 VG13
926Tenagra II Obs. in Arizona, 1 in MPEC 2009-U124 -- 2009 UV18
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 October '09

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
2009 UZ87JPL Sentry00172020-2108518.2e-08-7.58-8.260JPL: "Analysis based on 18 observations spanning .08406 days (2009-Oct-27.43652 to 2009-Oct-27.52058)." Diameter approximately 0.025 km. from mean, weighted H=25.7.
2009 UY87NEODyS15042020-2085351.41e-08-4.71-5.210NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2009/10/27.409 to 2009/10/27.701."
2009 UV87NEODyS15042030-208841.06e-09-8.74-8.870NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2009/10/27.186 to 2009/10/27.365."

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 28 October '09

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

1504Grabbed MPEC 2009-U124 - Daily Orbit Update - see above
1503Noted that NEODyS has posted 2009 UV87 as an impact risk - see above
Noted that NEODyS has posted 2009 UY87 as an impact risk - see above
0017Noted that JPL Sentry has posted 2009 UZ87 as an impact risk - see above