Contents  on 11 November '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 11 November '09

The MPC's NEO Confirmation Page has 14 listings: 2 new, 12 updated

When last checked at 2304 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and twelve updated listings. Of these, eight 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 November '09

Minor Planet Electronic Circulars

As of last check at 2304 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2009-V44 - "19:57 UT" - 2009 VX

<< DOU on 11 Nov. '09 >>  MPEC 2009-V43 - "07:09 UT" - Daily Orbit Update

Observers  on 11 November '09

Eighteen observing facilities appear in today's MPECs.

CodeObserver / observatory
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2009-V43 -- 3200
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2009-V43 -- 3361
B75Betelgeuse Station in Italy, 2 in MPEC 2009-V43 -- 2009 VW, 2009 NA
160Castelmartini Obs. in Italy, 1 in MPEC 2009-V44 -- 2009 VX
703Catalina Sky Survey (CSS) in Arizona, 13 in MPEC 2009-V43 -- 2009 SW, 2009 NH, 2008 WB59, 85818, 85709, 54401, 218863, 218017, 212546, 11066, 6239, 5751, 1866
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2009-V43 -- 6239
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-V43 -- 162998
J28Jaen Obs. in Spain, 1 in MPEC 2009-V43 -- 6239
704LINEAR in New Mexico, 13 in MPEC 2009-V43 -- 2009 VZ, 2009 SX1, 2009 ST19, 2009 NA, 2006 VT2, 2005 RQ6, 2001 UW16, 1998 VF32, 96189, 66272, 22771, 137062, 3200
J75La Sagra Obs. in Spain, 2 in MPEC 2009-V43 -- 217807, 216689
560Madonna di Dossobuono Obs. in Italy, 2 in MPEC 2009-V43 -- 2009 VP, 2005 RQ6
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2009-V43 -- 2000 SP43, 6239
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2009-V43 -- 2009 VP, 2009 UY19, 2009 TK8
J53Posadas Obs. in Spain, 1 in MPEC 2009-V43 -- 217807
691Spacewatch 0.9m telescope in Arizona, 11 in MPEC 2009-V43 -- 2009 US87, 2009 KK8, 2007 XJ20, 2007 UR3, 2006 XA, 2006 WN1, 2001 WT1, 2001 SG286, 1990 UA, 89136, 164184
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2009-V43 -- 2009 VT, 2009 TG10, 2009 TB8
926Tenagra II Obs. in Arizona, 6 in MPECs 2009-V43 & 2009-V44 -- 2009 VX, 2009 VB1, 2009 UZ17, 2009 UY87, 2009 US87, 2009 UD19
A48Verona Obs. in Italy, 3 in MPEC 2009-V43 -- 2009 VZ, 2009 UY19, 2009 TK12
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 November '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2304 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 VT1NEODyS15272046-206824.78e-08-9.58-9.740NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2009/11/10.318 to 2009/11/10.509."
2009 VXJPL Sentry2202R E M O V E DJPL: Risk listing removed at 2149 UTC.
2009 VTJPL Sentry1526R E M O V E DJPL: Risk listing removed at 0953 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 11 November '09

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

2202Noted that JPL Sentry has removed 2009 VX as an impact risk - see above
2001Grabbed MPEC 2009-V44 - 2009 VX - see above
1526Noted that JPL Sentry has removed 2009 VT as an impact risk - see above
Noted that NEODyS has posted 2009 VT1 as an impact risk - see above
Grabbed MPEC 2009-V43 - Daily Orbit Update - see above