Contents  on 6 February '09

Resources:

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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 6 February '09

The MPC's NEO Confirmation Page has 3 listings: 3 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three updated listings. Of these, two were "one nighters."

New MPECs  on 6 February '09

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there were five MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-C62 - "15:37 UT" - Observations of Comets


MPEC 2009-C61 - "15:26 UT" - Comet C/2009 B2 (LINEAR)


MPEC 2009-C60 - "15:18 UT" - Comet P/2008 Y2 (Gibbs)


MPEC 2009-C59 - "15:10 UT" - Comet P/2008 Y1 (Boattini)


<< DOU on 6 Feb. '09 >>  MPEC 2009-C58 - "07:07 UT" - Daily Orbit Update

Observers  on 6 February '09

A total of 40 observing facilities appeared in this day's MPECs.

CodeObserver / observatory
J24Altamira Obs. in Spain, 2 in MPEC 2009-C62 -- C/2008 T2, 205P
H55Astronomical Research Obs. (ARO) in Illinois, 34 in MPEC 2009-C58 -- 2009 CZ, 2009 CX2, 2009 CW1, 2009 CV, 2009 CT, 2009 CS, 2009 CR1, 2009 CP, 2009 CE, 2009 CD2, 2009 CC3, 2009 CA3, 2009 BW2, 2009 BU5, 2009 BS5, 2009 BP58, 2009 BM2, 2009 BL58, 2009 BL2, 2009 BK71, 2009 BJ58, 2009 BH81, 2009 BH11, 2009 BG, 2009 BE81, 2009 BE77, 2009 BD81, 2009 BC11, 2009 BA11, 2009 AL15, 2008 YZ28, 2008 YE29, 2008 EV5, 2005 EY
432Boambee Obs. in New South Wales, 2 in MPEC 2009-C58 -- 141052, 4957
B20Carmelita Obs. in Spain, 4 in MPEC 2009-C62 -- C/2008 T2, C/2006 OF2, 116P, 29P
703Catalina Sky Survey (CSS) in Arizona, 22 in MPECs 2009-C58, 2009-C60 & 2009-C62 -- 2009 BD77, 2009 BA11, P/2008 Y2, 2008 TE157, 2005 SG19, 1999 AQ10, 68350, 52768, 25916, 22753, 144411, 143651, 8566, 5863, 4179, 1980, 1863, 201P, 74P, 33P, 17P, 16P
850Cordell-Lorenz Obs. in Tennessee, 5 in MPECs 2009-C58, 2009-C59, 2009-C60 & 2009-C62 -- 2009 BL58, 2009 BE58, P/2009 B1, P/2008 Y2, P/2008 Y1
448Desert Moon Obs. in New Mexico, 4 in MPEC 2009-C58 -- 2009 CX2, 2009 CC3, 2009 BM2, 2008 YV148
808El Leoncito Obs. in Argentina, 2 in MPEC 2009-C62 -- C/2006 U6, C/2006 K4
E85Farm Cove Obs. in New Zealand, 5 in MPECs 2009-C61 & 2009-C62 -- C/2009 B2, C/2008 E1, C/2007 N3, C/2006 K4, 195P
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2009-C62 -- C/2007 N3
442Gualba Obs. in Spain, 2 in MPEC 2009-C62 -- 144P, 29P
D80Gunma Obs. in Japan, 21 in MPECs 2009-C58, 2009-C60 & 2009-C62 -- 2009 AE16, 2009 AD16, P/2008 Y2, C/2008 T2, C/2008 FK75, C/2008 E1, C/2007 N3, C/2006 U6, C/2006 Q1, C/2006 OF2, C/2005 L3, 209P, 204P, 144P, 116P, 77P, 74P, 29P, 22P, 19P, 17P
379Hamamatsu-Yuto Obs. in Japan, 4 in MPECs 2009-C58 & 2009-C62 -- 2006 AS2, 116P, 74P, 29P
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2009-C61 -- C/2009 B2
D88Hiratsuka Obs. in Japan, 3 in MPEC 2009-C62 -- C/2008 T2, 144P, 61P
A21Irmtraut Obs. in Germany, 5 in MPEC 2009-C62 -- C/2006 W3, 205P, 116P, 74P, 29P
415Kambah Obs. in the Australian Capital Territory, 1 in MPEC 2009-C62 -- 195P
704LINEAR in New Mexico, 10 in MPECs 2009-C58 & 2009-C62 -- 2009 CG, 2008 QT3, 85867, 7822, 4596, 3199, 61P, 33P, 19P, 16P
J31La Axarquia Obs. in Spain, 2 in MPECs 2009-C60 & 2009-C62 -- P/2008 Y2, 29P
J38La Vara Obs. in Spain, 3 in MPEC 2009-C62 -- C/2007 N3, C/2005 L3, 29P
B82Maidbronn Obs. in Germany, 3 in MPEC 2009-C62 -- C/2007 N3, 65P, 29P
J40Malaga Obs. in Spain, 2 in MPEC 2009-C62 -- 116P, 17P
J45Montana Cabreja Obs. in the Canary Islands, 1 in MPEC 2009-C62 -- C/2007 N3
213Montcabre Obs. in Spain, 3 in MPEC 2009-C62 -- C/2008 T2, 29P, 17P
900Moriyama Obs. in Japan, 1 in MPEC 2009-C62 -- 19P
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2009-C58, 2009-C59 & 2009-C62 -- 2009 BS5, 2009 BM2, P/2009 B1, P/2008 Y1, 2008 SQ1, 2005 TZ51, 2000 KO44, 175706, 159504, 152742, 141495
A32Panker Obs. in Germany, 4 in MPEC 2009-C62 -- C/2006 W3, 205P, 144P, 29P
B49Paus Obs. in Spain, 1 in MPEC 2009-C62 -- 17P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 14 in MPECs 2009-C58, 2009-C60, 2009-C61 & 2009-C62 -- C/2009 B2, P/2008 Y2, C/2008 FK75, C/2007 N3, 2007 BT2, C/2006 Q1, C/2005 L3, 2000 FL1, 210P, 204P, 116P, 74P, 65P, 29P
473Remanzacco Obs. in Italy, 1 in MPEC 2009-C62 -- 144P
B70Sant Celoni Obs. in Spain, 1 in MPEC 2009-C62 -- 116P
B56Sant Pere Obs. in Spain, 3 in MPEC 2009-C62 -- C/2008 T2, C/2006 OF2, 29P
204Schiaparelli Obs. in Italy, 2 in MPECs 2009-C61 & 2009-C62 -- C/2009 B2, 211P
E12Siding Spring Survey in New South Wales, 1 in MPEC 2009-C58 -- 2009 CC3
G68Sierra Stars Obs. in northern California, 2 in MPEC 2009-C62 -- 211P, 74P
691Spacewatch 0.9m telescope in Arizona, 12 in MPECs 2009-C58 & 2009-C62 -- 2009 CB2, 2006 BC10, 2005 CF41, 2001 BJ16, 2000 BL19, 31346, 22771, 19764, 175114, 154988, 204P, 17P
291Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2009-C58 -- 2009 CT, 2009 CS, 2009 CB3, 2009 BN58, 2009 BF58, 2009 BC58, 2002 LV, 2001 DR8
H10Tzec Maun Obs. Mayhill in New Mexico, 5 in MPEC 2009-C62 -- C/2007 N3, C/2006 Q1, 77P, 65P, 19P
B42Vitebsk Obs. in Belarus, 13 in MPECs 2009-C60 & 2009-C62 -- P/2008 Y2, C/2007 N3, C/2005 L3, 209P, 201P, 144P, 116P, 77P, 74P, 65P, 29P, 19P, 17P
367Yatsuka Obs. in Japan, 6 in MPEC 2009-C62 -- C/2007 N3, C/2006 Q1, C/2005 L3, 210P, 65P, 22P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 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 CC3NEODyS1559207811.0e-10-7.36-7.360NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2009/02/04.630 to 2009/02/05.624."
JPL Sentry15582020-2107188.9e-08-4.43-5.270JPL: "Analysis based on 30 observations spanning .99410 days (2009-Feb-04.62941 to 2009-Feb-05.62351)." Diameter approximately 0.550 km. from mean, weighted H=19.0.
2009 CB3NEODyS17282013-2036101.77e-09-4.35-4.390NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2009/02/04.500 to 2009/02/05.558."
JPL Sentry15582012-2087694.1e-08-3.39-3.690JPL: "Analysis based on 23 observations spanning 1.0577 days (2009-Feb-04.49919 to 2009-Feb-05.55686)." Diameter approximately 0.490 km. from mean, weighted H=19.2.
2009 CD2JPL Sentry1558R E M O V E DJPL: Risk listing removed at 1034 UTC.
2009 CTJPL Sentry1558R E M O V E DJPL: Risk listing removed at 1037 UTC.
NEODyS1558R E M O V E D-
2009 CSJPL Sentry1558R E M O V E DJPL: Risk listing removed at 1031 UTC.
NEODyS1558R E M O V E D-
2009 BD81JPL Sentry1558204618.3e-09-5.71-5.710JPL: "Analysis based on 24 observations spanning 4.9779 days (2009-Jan-31.10076 to 2009-Feb-05.0787)." Diameter approximately 0.300 km. from mean, weighted H=20.3.
NEODyS1558R E M O V E D-
2009 BJ58JPL Sentry15582011-202024.1e-09-4.34-4.520JPL: "Analysis based on 45 observations spanning 6.9234 days (2009-Jan-29.13966 to 2009-Feb-05.063035)." Diameter approximately 0.497 km. from mean, weighted H=19.2.
NEODyS1558R E M O V E D-
2009 BF58NEODyS15592053-2090272.05e-04-5.09-5.360NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2009/01/28.263 to 2009/02/05.255."
JPL Sentry15582055-2087292.2e-04-5.07-5.340JPL: "Analysis based on 44 observations spanning 7.9911 days (2009-Jan-28.26267 to 2009-Feb-05.25376)." Diameter approximately 0.012 km. from mean, weighted H=27.3.

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 6 February '09

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

1728Noted that NEODyS has posted 2009 CB3 as an impact risk - see above
1559Noted that NEODyS has updated its 2009 BF58 risk assessment - see above
Grabbed MPEC 2009-C58 - Daily Orbit Update - see above
Grabbed MPEC 2009-C59 - Comet P/2008 Y1 (Boattini) - see above
Grabbed MPEC 2009-C60 - Comet P/2008 Y2 (Gibbs) - see above
Grabbed MPEC 2009-C61 - Comet C/2009 B2 (LINEAR) - see above
Grabbed MPEC 2009-C62 - Observations of Comets - see above
1558Noted that JPL Sentry has updated its 2009 BD81 risk assessment - see above
Noted that NEODyS has removed 2009 BD81 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 BF58 risk assessment - see above
Noted that JPL Sentry has updated its 2009 BJ58 risk assessment - see above
Noted that NEODyS has removed 2009 BJ58 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 CB3 risk assessment - see above
Noted that JPL Sentry has updated its 2009 CC3 risk assessment - see above
Noted that NEODyS has posted 2009 CC3 as an impact risk - see above
Noted that JPL Sentry has removed 2009 CD2 as an impact risk - see above
Noted that JPL Sentry has removed 2009 CS as an impact risk - see above
Noted that NEODyS has removed 2009 CS as an impact risk - see above
Noted that JPL Sentry has removed 2009 CT as an impact risk - see above
Noted that NEODyS has removed 2009 CT as an impact risk - see above