A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During February 2009

Compiled at 2359 UTC on 28 February 2009

<< January 2009 CRT | CRT Archive Index | March 2009 CRT >>

[ Today's risk monitoring & other observing news | object risks cleared in February | Ephemerides for Active Risk-Rated Objects ]

Missing something? Check the archives for objects not under active observation or recent analysis.

Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090, plus (since 22 Jan. 2009) a few special objects with impact solutions beyond 100 years.
For the latest official risk assessments, and for explanations of terminology and methodology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
0000NNN000

Object

Risk
Monitor
A/CC Noted
 Time & Day 
UTC
0000T0000
Year
Range

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

T
S


Notes for Latest Risk Assessments
2009 DB45JPL Sentry1730 Feb. 282023-2093208.0e-09-5.24-5.910Analysis based on 18 observations spanning 1.0439 days (2009-Feb-27.25736 to 2009-Feb-28.30131). Diameter approximately 0.450 km. from mean, weighted H=19.4.
An assessment posting was noted by A/CC on 28 Feb.   -   References: MPEC 2009-D78
2009 DA45JPL Sentry1730 Feb. 282041-208153.2e-09-7.39-7.840Analysis based on 21 observations spanning 1.1293 days (2009-Feb-27.16081 to 2009-Feb-28.29006). Diameter approximately 0.100 km. from mean, weighted H=22.7.
An assessment posting was noted by A/CC on 28 Feb.   -   References: MPEC 2009-D77
2009 DV43NEODyS1600 Feb. 282019-2088143.1e-08-6.30-6.540Based on 23 optical observations (of which 0 are rejected as outliers) from 2009/02/27.295 to 2009/02/27.883.
JPL Sentry2258 Feb. 272019-2093174.7e-08-6.21-6.660Analysis based on 23 observations spanning .58851 days (2009-Feb-27.29421 to 2009-Feb-27.88272). Diameter approximately 0.062 km. from mean, weighted H=23.7.
Assessment postings were noted by A/CC on 27 Feb. & 28 Feb.   -   References: MPEC 2009-D75
2009 DT43NEODyS1600 Feb. 28204413.45e-06-6.10-6.100Based on 17 optical observations (of which 0 are rejected as outliers) from 2009/02/27.416 to 2009/02/27.533.
JPL Sentry2204 Feb. 272044-210143.9e-06-6.10-6.130Analysis based on 17 observations spanning .11758 days (2009-Feb-27.41498 to 2009-Feb-27.53256). Diameter approximately 0.015 km. from mean, weighted H=26.8.
Assessment postings were noted by A/CC on 27 Feb. & 28 Feb.   -   References: MPEC 2009-D74
2009 DS43NEODyS1600 Feb. 282014-2090514.09e-08-6.91-7.320Based on 24 optical observations (of which 5 are rejected as outliers) from 2009/02/27.265 to 2009/02/27.464.
JPL Sentry1600 Feb. 282014-2107399.6e-08-6.59-6.970Analysis based on 19 observations spanning .19886 days (2009-Feb-27.26402 to 2009-Feb-27.46288). Diameter approximately 0.028 km. from mean, weighted H=25.4.
Assessment postings were noted by A/CC on 27 Feb. & 28 Feb.   -   References: MPECs 2009-D73 & 2009-D76
2009 DC43NEODyS1600 Feb. 282012-20891337.08e-08-3.12-3.870Based on 33 optical observations (of which 0 are rejected as outliers) from 2009/02/26.500 to 2009/02/27.500.
JPL Sentry1858 Feb. 272016-21081217.3e-08-3.35-4.080Analysis based on 33 observations spanning .99968 days (2009-Feb-26.49973 to 2009-Feb-27.49941). Diameter approximately 0.940 km. from mean, weighted H=17.8.
Assessment postings were noted by A/CC on 27 Feb. & 28 Feb.   -   References: MPEC 2009-D72
2009 DZ42NEODyS1600 Feb. 282073-207725.28e-07-3.84-4.000Based on 42 optical observations (of which 0 are rejected as outliers) from 2009/02/26.129 to 2009/02/28.145.
JPL Sentry1600 Feb. 282073-210636.5e-07-3.72-3.900Analysis based on 42 observations spanning 2.0156 days (2009-Feb-26.12849 to 2009-Feb-28.14414). Diameter approximately 0.410 km. from mean, weighted H=19.6.
Assessment postings were noted by A/CC on 27 Feb. & 28 Feb.   -   References: MPECs 2009-D69 & 2009-D76
2009 DV42NEODyS1508 Feb. 272015-2089562.97e-08-4.05-4.480Based on 22 optical observations (of which 0 are rejected as outliers) from 2009/02/26.423 to 2009/02/27.027.
JPL Sentry1508 Feb. 272015-2104795.4e-08-3.90-4.460Analysis based on 22 observations spanning .60486 days (2009-Feb-26.42181 to 2009-Feb-27.02667). Diameter approximately 0.642 km. from mean, weighted H=18.6.
Assessment postings were noted by A/CC on 27 Feb.   -   References: MPECs 2009-D67 & 2009-D68
2009 CZ1NEODyS1524 Feb. 52058-207441.15e-06-5.52-5.700Based on 22 optical observations (of which 0 are rejected as outliers) from 2009/02/03.387 to 2009/02/05.268.
JPL Sentry1523 Feb. 52058-210631.1e-06-5.55-5.720Analysis based on 22 observations spanning 1.8816 days (2009-Feb-03.38609 to 2009-Feb-05.26765). Diameter approximately 0.044 km. from mean, weighted H=24.4.
Assessment postings were noted by A/CC on 4 Feb. & 5 Feb.   -   References: MPECs 2009-C40 & 2009-C49
2009 BF58NEODyS1458 Feb. 262055-2090401.86e-04-5.12-5.330Based on 56 optical observations (of which 0 are rejected as outliers) from 2009/01/28.263 to 2009/02/25.436.
JPL Sentry1458 Feb. 262055-2088211.9e-04-5.11-5.320Analysis based on 56 observations spanning 28.173 days (2009-Jan-28.26267 to 2009-Feb-25.43554). Diameter approximately 0.012 km. from mean, weighted H=27.2.
Assessment postings were noted by A/CC on 31 Jan., 1 Feb., 3 Feb., 6 Feb., 12 Feb., 21 Feb., 23 Feb. & 26 Feb.   -   References: MPECs 2009-B90, 2009-C02, 2009-C20, 2009-C58, 2009-C78, 2009-D42, 2009-D53 & 2009-D65
2009 BR5NEODyS1528 Feb. 12059-207833.31e-07-4.97-5.170Based on 34 optical observations (of which 0 are rejected as outliers) from 2009/01/20.456 to 2009/01/31.311.
JPL Sentry1528 Feb. 12059-207833.1e-07-5.00-5.240Analysis based on 34 observations spanning 10.855 days (2009-Jan-20.45513 to 2009-Jan-31.3098). Diameter approximately 0.130 km. from mean, weighted H=22.1.
Assessment postings were noted by A/CC on 1 Feb.   -   References: MPEC 2009-C02
C   L   E   A   R   E   D
2009 DH39JPL Sentry1508 Feb. 27R E M O V E DRisk listing removed at 0951 UTC 27 Feb.
Assessment postings were noted by A/CC on 25 Feb., 26 Feb. & 27 Feb.   -   References: MPECs 2009-D63, 2009-D65, 2009-D68 & 2009-D76
2009 DS10NEODyS1459 Feb. 24R E M O V E D
JPL Sentry1459 Feb. 24R E M O V E DRisk listing removed at 0951 UTC 24 Feb.
Assessment postings were noted by A/CC on 22 Feb., 23 Feb. & 24 Feb.   -   References: MPECs 2009-D49, 2009-D59 & 2009-D76
2009 DR3JPL Sentry1651 Feb. 22R E M O V E DRisk listing removed at 1031 UTC 22 Feb.
NEODyS1651 Feb. 22R E M O V E D
Assessment postings were noted by A/CC on 21 Feb. & 22 Feb.   -   References: MPECs 2009-D40, 2009-D42, 2009-D48, 2009-D53, 2009-D59, 2009-D60, 2009-D65 & 2009-D76
2009 DM1NEODyS1458 Feb. 26R E M O V E D
JPL Sentry1458 Feb. 26R E M O V E DRisk listing removed at 0947 UTC 26 Feb.
Assessment postings were noted by A/CC on 20 Feb., 21 Feb., 22 Feb., 24 Feb. & 26 Feb.   -   References: MPECs 2009-D36, 2009-D42, 2009-D48, 2009-D59, 2009-D65 & 2009-D68
2009 DF1NEODyS1559 Feb. 21R E M O V E D
JPL Sentry1559 Feb. 21R E M O V E DRisk listing removed at 0949 UTC 21 Feb.
Assessment postings were noted by A/CC on 20 Feb. & 21 Feb.   -   References: MPECs 2009-D33, 2009-D34, 2009-D42, 2009-D48, 2009-D53, 2009-D59, 2009-D68 & 2009-D76
2009 DE1JPL Sentry1514 Feb. 25R E M O V E DRisk listing removed at 0953 UTC 25 Feb.
NEODyS1559 Feb. 21R E M O V E D
Assessment postings were noted by A/CC on 20 Feb., 21 Feb. & 25 Feb.   -   References: MPECs 2009-D32, 2009-D42, 2009-D60 & 2009-D65
2009 DA1NEODyS1600 Feb. 28R E M O V E D
JPL Sentry1458 Feb. 26R E M O V E DRisk listing removed at 0950 UTC 26 Feb.
Assessment postings were noted by A/CC on 20 Feb., 22 Feb., 24 Feb., 25 Feb., 26 Feb. & 28 Feb.   -   References: MPECs 2009-D28, 2009-D48, 2009-D59, 2009-D60, 2009-D65 & 2009-D76
2009 CV5JPL Sentry1426 Feb. 19R E M O V E DRisk listing removed at 0951 UTC 19 Feb.
NEODyS1426 Feb. 19R E M O V E D
Assessment postings were noted by A/CC on 16 Feb. & 19 Feb.   -   References: MPECs 2009-D05, 2009-D22, 2009-D34, 2009-D48, 2009-D59 & 2009-D76
2009 CQ5NEODyS1528 Feb. 20R E M O V E D
JPL Sentry1528 Feb. 20R E M O V E DRisk listing removed at 0951 UTC 20 Feb.
Assessment postings were noted by A/CC on 16 Feb. & 20 Feb.   -   References: MPECs 2009-D01, 2009-D34, 2009-D42, 2009-D48 & 2009-D68
2009 CR4JPL Sentry1609 Feb. 14R E M O V E DRisk listing removed at 0951 UTC 14 Feb.
Assessment postings were noted by A/CC on 13 Feb. & 14 Feb.   -   References: MPECs 2009-C82, 2009-C83, 2009-C84, 2009-D15, 2009-D18, 2009-D34, 2009-D48, 2009-D59, 2009-D65 & 2009-D68
2009 CC3JPL Sentry1420 Feb. 18R E M O V E DRisk listing removed at 0950 UTC 18 Feb.
NEODyS1828 Feb. 7R E M O V E D
Assessment postings were noted by A/CC on 5 Feb., 6 Feb., 7 Feb., 8 Feb. & 18 Feb.   -   References: MPECs 2009-C55, 2009-C58, 2009-C63, 2009-C64, 2009-D18, 2009-D22, 2009-D34 & 2009-D76
2009 CB3NEODyS1458 Feb. 26R E M O V E D
JPL Sentry1458 Feb. 26R E M O V E DRisk listing removed at 1006 UTC 26 Feb.
Assessment postings were noted by A/CC on 5 Feb., 6 Feb. & 26 Feb.   -   References: MPECs 2009-C54, 2009-C58 & 2009-D65
2009 CR2JPL Sentry1426 Feb. 19R E M O V E DRisk listing removed at 0949 UTC 19 Feb.
NEODyS1533 Feb. 16R E M O V E D
Assessment postings were noted by A/CC on 4 Feb., 5 Feb., 14 Feb., 15 Feb., 16 Feb. & 19 Feb.   -   References: MPECs 2009-C45, 2009-C83, 2009-C84, 2009-D07, 2009-D22, 2009-D48 & 2009-D53
2009 CD2JPL Sentry1558 Feb. 6R E M O V E DRisk listing removed at 1034 UTC 6 Feb.
Assessment postings were noted by A/CC on 4 Feb. & 6 Feb.   -   References: MPECs 2009-C44 & 2009-C58
2009 CA2NEODyS1828 Feb. 7R E M O V E D
Assessment postings were noted by A/CC on 5 Feb. & 7 Feb.   -   References: MPECs 2009-C41, 2009-C63, 2009-C83, 2009-D18, 2009-D22, 2009-D42 & 2009-D59
2009 CZJPL Sentry1523 Feb. 5R E M O V E DRisk listing removed at 0950 UTC 5 Feb.
Assessment postings were noted by A/CC on 3 Feb. & 5 Feb.   -   References: MPECs 2009-C28, 2009-C49, 2009-C58, 2009-C68, 2009-C83, 2009-D15, 2009-D34 & 2009-D48
2009 CVJPL Sentry1532 Feb. 4R E M O V E DRisk listing removed at 0957 UTC 4 Feb.
Assessment postings were noted by A/CC on 3 Feb. & 4 Feb.   -   References: MPECs 2009-C27, 2009-C30, 2009-C49, 2009-C58, 2009-C63, 2009-C68, 2009-C78, 2009-C81, 2009-C83, 2009-C84, 2009-D07, 2009-D15, 2009-D18, 2009-D22, 2009-D34, 2009-D48 & 2009-D76
2009 CTJPL Sentry1558 Feb. 6R E M O V E DRisk listing removed at 1037 UTC 6 Feb.
NEODyS1558 Feb. 6R E M O V E D
Assessment postings were noted by A/CC on 3 Feb., 4 Feb. & 6 Feb.   -   References: MPECs 2009-C25, 2009-C58, 2009-D18, 2009-D22 & 2009-D68
2009 CSJPL Sentry1558 Feb. 6R E M O V E DRisk listing removed at 1031 UTC 6 Feb.
NEODyS1558 Feb. 6R E M O V E D
Assessment postings were noted by A/CC on 3 Feb., 4 Feb. & 6 Feb.   -   References: MPECs 2009-C24, 2009-C58, 2009-C63, 2009-C84, 2009-D18, 2009-D22, 2009-D34, 2009-D48, 2009-D59 & 2009-D76
2009 BF81JPL Sentry1528 Feb. 20R E M O V E DRisk listing removed at 0950 UTC 20 Feb.
NEODyS1609 Feb. 14R E M O V E D
Assessment postings were noted by A/CC on 2 Feb., 3 Feb., 14 Feb. & 20 Feb.   -   References: MPECs 2009-C11, 2009-C20, 2009-C83, 2009-D34, 2009-D48 & 2009-D65
2009 BD81JPL Sentry1605 Feb. 10R E M O V E DRisk listing removed at 1549 UTC 10 Feb.
NEODyS1558 Feb. 6R E M O V E D
Assessment postings were noted by A/CC on 2 Feb., 3 Feb., 4 Feb., 6 Feb. & 10 Feb.   -   References: MPECs 2009-C09, 2009-C30, 2009-C58, 2009-C68, 2009-C84, 2009-D15, 2009-D22, 2009-D53 & 2009-D59
2009 BL71JPL Sentry1541 Feb. 8R E M O V E DRisk listing removed at 0955 UTC 8 Feb.
NEODyS1424 Feb. 2R E M O V E D
Assessment postings were noted by A/CC on 31 Jan., 2 Feb. & 8 Feb.   -   References: MPECs 2009-B89, 2009-B90, 2009-C05, 2009-C64, 2009-C84 & 2009-D60
2009 BJ58JPL Sentry1609 Feb. 14R E M O V E DRisk listing removed at 0953 UTC 14 Feb.
NEODyS1558 Feb. 6R E M O V E D
Assessment postings were noted by A/CC on 31 Jan., 1 Feb., 6 Feb. & 14 Feb.   -   References: MPECs 2009-C02, 2009-C58, 2009-C83, 2009-C84, 2009-D42 & 2009-D48
2009 BC58JPL Sentry1528 Feb. 1R E M O V E DRisk listing removed at 1028 UTC 1 Feb.
NEODyS1528 Feb. 1R E M O V E D
Assessment postings were noted by A/CC on 31 Jan. & 1 Feb.   -   References: MPECs 2009-C02, 2009-C30, 2009-C58, 2009-C83, 2009-C84, 2009-D48, 2009-D53 & 2009-D60

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

For a list of risk-rated objects currently under observation, see our ephemerides page.

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" for more information.


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