Contents  on 19 January '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 19 January '09

The MPC's NEO Confirmation Page has 23 listings: 7 new, 16 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven new and sixteen updated listings. Of these, eight were "one nighters." So far The Tracking News has counted a total of 24 objects listed on the NEOCP at some point today.

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

New MPECs  on 19 January '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 19 Jan. '09 >>  MPEC 2009-B19 - "07:05 UT" - Daily Orbit Update

Observers  on 19 January '09

Nineteen observing facilities appear in today's MPEC.

CodeObserver / observatory
160Castelmartini Obs. in Italy, 6 in MPEC 2009-B19 -- 2008 QT3, 2006 AS2, 52768, 194386, 141052, 136849
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2009-B19 -- 2008 YE30, 14402
G58Chabot Obs. in northern California, 1 in MPEC 2009-B19 -- 2008 XE2
448Desert Moon Obs. in New Mexico, 7 in MPEC 2009-B19 -- 2009 BE, 2009 BD, 2008 YR2, 2008 YA, 2008 TK157, 2005 SN25, 162080
J95Great Shefford Obs. in England, 2 in MPEC 2009-B19 -- 2009 BE, 2009 BD
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2009-B19 -- 2005 BC, 68350, 1864, 1036
704LINEAR in New Mexico, 19 in MPEC 2009-B19 -- 2009 BG, 2009 BE, 2009 BB, 2008 UC, 2008 SH82, 2008 MB5, 2005 WS55, 2001 LM5, 68350, 55532, 52768, 22753, 187026, 18109, 154715, 6050, 4183, 3360, 2061
118Modra Obs. in Slovakia, 1 in MPEC 2009-B19 -- 2008 EV5
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPEC 2009-B19 -- 2009 BE, 2005 NJ1, 2003 FG, 90075, 154991, 143643, 12923, 10860, 3360, 2368
A24New Millennium Obs. in Italy, 23 in MPEC 2009-B19 -- 2008 SQ1, 2008 SE, 2008 MZ, 2006 VB14, 2006 SZ217, 2002 VY94, 2001 LM5, 89355, 85774, 53430, 17511, 162900, 153306, 141765, 136923, 12711, 8567, 7358, 4179, 3200, 1916, 1627, 1620
A32Panker Obs. in Germany, 1 in MPEC 2009-B19 -- 4179
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2009-B19 -- 2008 YE29, 2008 SQ1, 2008 EV5
D29Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2009-B19 -- 2006 AS2
204Schiaparelli Obs. in Italy, 5 in MPEC 2009-B19 -- 2008 QT3, 2002 VY94, 20460, 1627, 1620
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2009-B19 -- 2009 AM15, 2009 AK15
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2009-B19 -- 2003 RP8, 2000 DV110, 2061
291Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2009-B19 -- 2009 AL15, 2009 AL, 2008 YE30, 2008 YA29, 2008 WZ13, 2008 WX32, 2007 BG, 2000 YJ29
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPEC 2009-B19 -- 2009 BB, 2009 AC16
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-B19 -- 2009 BD
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 January '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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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 BEJPL Sentry15282058-2108212.7e-04-4.18-4.430JPL: "Analysis based on 45 observations spanning 2.5947 days (2009-Jan-16.36105 to 2009-Jan-18.95578)." Diameter approximately 0.022 km. from mean, weighted H=25.9.
NEODyS15282045-2090142.51e-04-4.22-4.450NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2009/01/16.362 to 2009/01/18.957."
2009 BDNEODyS17282053-2090676.61e-04-5.21-6.000NEODyS: "Based on 71 optical observations (of which 1 are rejected as outliers) from 2009/01/16.277 to 2009/01/18.839."
JPL Sentry15282023-2108454.1e-04-5.42-6.000JPL: "Analysis based on 70 observations spanning 2.5622 days (2009-Jan-16.27641 to 2009-Jan-18.83861)." Diameter approximately 0.006 km. from mean, weighted H=28.6.
2009 ALJPL Sentry15282090-210628.5e-08-5.75-5.880JPL: "Analysis based on 44 observations spanning 16.838 days (2009-Jan-01.29931 to 2009-Jan-18.13725)." Diameter approximately 0.150 km. from mean, weighted H=21.8.
NEODyS1528209016.17e-08-5.86-5.860NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2009/01/01.300 to 2009/01/18.138."

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 January '09

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

1728Noted that NEODyS has updated its 2009 BD risk assessment - see above
1528Noted that JPL Sentry has updated its 2009 AL risk assessment - see above
Noted that NEODyS has updated its 2009 AL risk assessment - see above
Noted that JPL Sentry has updated its 2009 BD risk assessment - see above
Noted that JPL Sentry has updated its 2009 BE risk assessment - see above
Noted that NEODyS has updated its 2009 BE risk assessment - see above
Grabbed MPEC 2009-B19 - Daily Orbit Update - see above