Contents  on 23 February '09

Resources:

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 23 February '09

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and one updated listing. Both of these were "one nighters." So far The Tracking News has counted a total of six 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 23 February '09

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 2009-D58 - "17:03 UT" - 2009 DK12


MPEC 2009-D57 - "16:01 UT" - Observations of Comets


MPEC 2009-D56 - "15:44 UT" - Comet C/2009 B2 (LINEAR)


MPEC 2009-D55 - "13:22 UT" - 2009 DC12


MPEC 2009-D54 - "13:18 UT" - 2009 DB12


<< DOU on 23 Feb. '09 >>  MPEC 2009-D53 - "07:07 UT" - Daily Orbit Update

Observers  on 23 February '09

A total of 74 observing facilities appear in today's MPECs.

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2009-D57 -- C/2007 Q3
349Ageo Obs. in Japan, 6 in MPECs 2009-D56 & 2009-D57 -- C/2009 B2, C/2008 Q1, C/2007 N3, C/2006 Q1, 205P, 143P
J24Altamira Obs. in Spain, 2 in MPEC 2009-D57 -- C/2007 Q3, 205P
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2009-D57 -- 212P
J20Aravaca Obs. in Spain, 5 in MPEC 2009-D57 -- C/2008 T2, 144P, 116P, 74P, 29P
H55Astronomical Research Obs. (ARO) in Illinois, 5 in MPECs 2009-D53, 2009-D54, 2009-D55 & 2009-D58 -- 2009 DK12, 2009 DC12, 2009 DB12, 2009 BG58, 2009 BD81
J51Atlante Obs. in the Canary Islands, 9 in MPEC 2009-D57 -- P/2008 Y3, P/2008 Y2, C/2007 N3, C/2006 U6, C/2006 Q1, 209P, 116P, 65P, 29P
467Auckland Obs. in New Zealand, 2 in MPEC 2009-D57 -- C/2007 Q3, C/2007 G1
A81Balzaretto Obs. in Italy, 1 in MPEC 2009-D57 -- C/2007 N3
432Boambee Obs. in New South Wales, 1 in MPEC 2009-D53 -- 2008 QT3
235CAST Obs. in Italy, 15 in MPEC 2009-D57 -- C/2008 T2, C/2007 N3, C/2006 U6, C/2006 OF2, C/2005 L3, 209P, 144P, 116P, 77P, 74P, 67P, 65P, 59P, 29P, 19P
I77CEAMIG-REA in Brazil, 1 in MPEC 2009-D57 -- C/2007 N3
493Calar Alto Obs. in Spain, 2 in MPECs 2009-D55 & 2009-D58 -- 2009 DK12, 2009 DC12
J96Cantabria Obs. in Spain, 5 in MPEC 2009-D57 -- C/2008 T2, C/2006 OF2, 144P, 116P, 29P
B20Carmelita Obs. in Spain, 3 in MPEC 2009-D57 -- C/2008 T2, C/2006 OF2, 29P
160Castelmartini Obs. in Italy, 3 in MPEC 2009-D57 -- C/2007 N3, 144P, 116P
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2009-D53 & 2009-D57 -- 2009 DG9, 2008 EE, 159533, 153306, 137925, 1863, 205P, 44P
A77Chante-Perdrix Obs. in France, 7 in MPECs 2009-D53 & 2009-D57 -- 2009 BC58, C/2008 S3, C/2007 N3, C/2006 OF2, C/2005 L3, 144P, 29P
850Cordell-Lorenz Obs. in Tennessee, 3 in MPEC 2009-D57 -- C/2007 N3, 215P, 211P
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2009-D57 -- C/2007 S2
J27El Guijo Obs. in Spain, 5 in MPECs 2009-D53 & 2009-D57 -- C/2006 OF2, 143651, 116P, 74P, 29P
J19El Maestrat Obs. in Spain, 1 in MPEC 2009-D57 -- C/2007 N3
E85Farm Cove Obs. in New Zealand, 6 in MPECs 2009-D56 & 2009-D57 -- C/2009 B2, P/2008 Y3, P/2008 Y2, C/2008 E1, 195P, 144P
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2009-D58 -- 2009 DK12
203GiaGa Obs. in Italy, 2 in MPEC 2009-D57 -- C/2006 OF2, 116P
B83Gieres Obs. in France, 1 in MPEC 2009-D57 -- C/2007 N3
458Guadarrama Obs. in Spain, 2 in MPEC 2009-D57 -- C/2006 OF2, 29P
442Gualba Obs. in Spain, 2 in MPEC 2009-D57 -- C/2007 N3, 29P
185Jurassien-Vicques Obs. in Switzerland, 1 in MPEC 2009-D57 -- P/2008 Q2
704LINEAR in New Mexico, 20 in MPECs 2009-D53, 2009-D54 & 2009-D57 -- 2009 DL1, 2009 DB12, P/2008 Y2, C/2008 FK75, C/2007 S2, C/2007 D3, 2002 EB3, 22771, 206910, 198752, 18109, 138883, 111253, 8566, 210P, 74P, 65P, 59P, 44P, 17P
J31La Axarquia Obs. in Spain, 1 in MPEC 2009-D57 -- 74P
212La Dehesilla Obs. in Spain, 2 in MPEC 2009-D57 -- C/2006 OF2, 116P
J38La Vara Obs. in Spain, 15 in MPEC 2009-D57 -- C/2008 T2, C/2008 R3, C/2008 Q1, C/2007 N3, C/2006 OF2, C/2005 L3, 144P, 143P, 116P, 74P, 67P, 65P, 59P, 29P, 19P
B33Libbiano Obs. in Italy, 5 in MPEC 2009-D57 -- C/2007 N3, C/2007 D1, 116P, 65P, 29P
J59Linceo Obs. in Spain, 1 in MPEC 2009-D57 -- 144P
I36Los Campitos Obs. in Argentina, 6 in MPEC 2009-D57 -- C/2007 N3, C/2007 G1, C/2006 U6, 143P, 77P, 65P
130Lumezzane Obs. in Italy, 3 in MPEC 2009-D57 -- P/2008 Y2, P/2008 WZ96, 212P
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2009-D57 -- C/2007 N3, C/2006 OF2, 29P
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2009-D53, 2009-D55 & 2009-D58 -- 2009 DK12, 2009 DC12, 2009 BF58
B82Maidbronn Obs. in Germany, 8 in MPEC 2009-D57 -- C/2008 T2, C/2007 N3, C/2006 OF2, 211P, 144P, 116P, 59P, 29P
J40Malaga Obs. in Spain, 10 in MPEC 2009-D57 -- C/2008 T2, C/2007 N3, C/2006 OF2, 209P, 204P, 144P, 67P, 59P, 29P, 19P
A02Masia Cal Maciarol Modul 8 in Spain, 1 in MPEC 2009-D57 -- 29P
A06Mataro Obs. in Spain, 5 in MPECs 2009-D53 & 2009-D57 -- C/2007 N3, C/2006 OF2, 14402, 116P, 74P
J46Montana Blanca Obs. in the Canary Islands, 2 in MPEC 2009-D57 -- C/2006 OF2, 29P
213Montcabre Obs. in Spain, 4 in MPEC 2009-D57 -- C/2008 T2, C/2007 N3, 67P, 29P
945Monte Deva Obs. in Spain, 10 in MPEC 2009-D57 -- C/2008 T2, C/2007 N3, C/2006 OF2, C/2005 L3, 209P, 144P, 116P, 74P, 65P, 29P
900Moriyama Obs. in Japan, 21 in MPECs 2009-D56 & 2009-D57 -- C/2009 B2, P/2008 Y2, C/2008 T2, C/2008 Q1, C/2008 FK75, C/2008 E1, C/2007 Q3, C/2007 N3, C/2007 D1, C/2006 Q1, C/2006 OF2, C/2005 L3, 210P, 209P, 204P, 116P, 74P, 65P, 59P, 29P, 19P
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2009-D55 & 2009-D57 -- 2009 DC12, 204P
A13Naef Obs. in Switzerland, 2 in MPEC 2009-D57 -- C/2006 OF2, 29P
D81Nagano Obs. in Japan, 1 in MPEC 2009-D57 -- C/2007 N3
J47Nazaret Obs. in Spain, 11 in MPEC 2009-D57 -- C/2008 T2, C/2007 N3, C/2006 OF2, 204P, 144P, 116P, 67P, 59P, 29P, 19P, 17P
B49Paus Obs. in Spain, 1 in MPEC 2009-D57 -- 116P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 26 in MPECs 2009-D53 & 2009-D57 -- 2009 DR3, 2009 DF1, 2009 CR2, 2009 CO5, 2009 BD77, 2009 BB11, 2009 AH16, 2008 YE29, P/2008 Y2, C/2008 S3, 2008 RM98, C/2008 FK75, 2008 EE, C/2007 S2, C/2007 N3, C/2007 D1, 2006 WZ2, C/2006 Q1, 2006 BC10, C/2005 L3, 2004 EU9, 204P, 77P, 65P, 29P, 19P
J53Posadas Obs. in Spain, 8 in MPEC 2009-D57 -- P/2008 Y2, C/2008 T2, C/2008 E1, C/2007 N3, C/2006 OF2, 144P, 74P, 29P
473Remanzacco Obs. in Italy, 1 in MPEC 2009-D57 -- P/2008 Y2
939Rodeno Obs. in Spain, 9 in MPEC 2009-D57 -- C/2008 T2, C/2008 R3, C/2007 N3, C/2006 OF2, 144P, 116P, 74P, 67P, 29P
H36Sandlot Obs. in Kansas, 4 in MPECs 2009-D54 & 2009-D57 -- 2009 DB12, C/2008 Q1, C/2008 FK75, C/2007 D1
B61Sant Cugat del Valles Obs. in Spain, 2 in MPEC 2009-D57 -- 77P, 65P
204Schiaparelli Obs. in Italy, 3 in MPEC 2009-D57 -- P/2008 Q2, C/2008 FK75, C/2007 D3
E12Siding Spring Survey (SSS) in New South Wales, 9 in MPECs 2009-D53 & 2009-D57 -- 2009 DT10, 2009 DQ4, P/2008 Y3, 2008 TQ2, C/2007 Q3, C/2007 N3, C/2006 U6, 164400, 6053
510Siegen Obs. in Germany, 1 in MPEC 2009-D57 -- 144P
587Sormano Obs. in Italy, 2 in MPEC 2009-D57 -- P/2008 Y2, C/2007 N3
691Spacewatch 0.9m telescope in Arizona, 7 in MPECs 2009-D53, 2009-D57 & 2009-D58 -- 2009 DK12, C/2007 D3, C/2007 D1, 99935, 159504, 17P, 16P
291Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2009-D53 & 2009-D57 -- 2009 CT1, P/2008 Y3, P/2008 Y2, C/2006 U6, 29P
A78Stia Obs. in Italy, 2 in MPEC 2009-D53 -- 2009 DR3, 2009 BA71
B18Terskol Obs. in Russia, 3 in MPEC 2009-D57 -- C/2007 N3, C/2006 OF2, 65P
H53Thompsonville Obs. in Illinois, 7 in MPECs 2009-D53 & 2009-D57 -- 2009 BD77, C/2008 T2, 2006 WZ2, C/2006 OF2, 2004 EU9, 144P, 116P
J35Tucci Obs. in Spain, 1 in MPEC 2009-D57 -- 144P
H10Tzec Maun Obs. Mayhill in New Mexico, 5 in MPEC 2009-D57 -- P/2008 Y2, C/2008 FK75, C/2006 OF2, 77P, 65P
184Valmeca Obs. in France, 1 in MPEC 2009-D57 -- P/2008 WZ96
J70Vega del Thader Obs. in Spain, 4 in MPEC 2009-D57 -- C/2007 N3, 144P, 59P, 29P
A48Verona Obs. in Italy, 1 in MPEC 2009-D53 -- 2009 DR3
H47Vicksburg Obs. in Mississippi, 5 in MPEC 2009-D57 -- C/2006 OF2, 144P, 116P, 74P, 29P
B42Vitebsk Obs. in Belarus, 4 in MPEC 2009-D57 -- P/2008 Y2, C/2006 OF2, 116P, 65P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 23 February '09

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. 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.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2009 DS10NEODyS14412064-207121.28e-09-6.89-6.960NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2009/02/21.127 to 2009/02/22.179."
2009 BF58JPL Sentry14412055-2087262.1e-04-5.07-5.300JPL: "Analysis based on 55 observations spanning 25.002 days (2009-Jan-28.26267 to 2009-Feb-22.26475)." Diameter approximately 0.012 km. from mean, weighted H=27.3.
NEODyS14412055-2090392.05e-04-5.08-5.300NEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2009/01/28.263 to 2009/02/22.266."

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 23 February '09

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

1717Grabbed MPEC 2009-D58 - 2009 DK12 - see above
1628Grabbed MPEC 2009-D57 - Observations of Comets - see above
1559Grabbed MPEC 2009-D56 - Comet C/2009 B2 (LINEAR) - see above
1441Noted that JPL Sentry has updated its 2009 BF58 risk assessment - see above
Noted that NEODyS has updated its 2009 BF58 risk assessment - see above
Noted that NEODyS has posted 2009 DS10 as an impact risk - see above
Grabbed MPEC 2009-D53 - Daily Orbit Update - see above
Grabbed MPEC 2009-D54 - 2009 DB12 - see above
Grabbed MPEC 2009-D55 - 2009 DC12 - see above