A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During January 2009

Compiled at 2359 UTC on 31 January 2009

<< December 2008 CRT | CRT Archive Index | February 2009 CRT >>

[ Today's risk monitoring & other observing news | object risks cleared in January | 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 BL71NEODyS1636 Jan. 312065-207722.82e-10-8.25-8.270Based on 19 optical observations (of which 0 are rejected as outliers) from 2009/01/30.270 to 2009/01/30.992.
JPL Sentry1636 Jan. 312021-2108882.4e-07-5.12-5.360Analysis based on 19 observations spanning .72150 days (2009-Jan-30.26931 to 2009-Jan-30.99081). Diameter approximately 0.132 km. from mean, weighted H=22.0.
Assessment postings were noted by A/CC on 31 Jan.   -   References: MPECs 2009-B89 & 2009-B90
2009 BJ58NEODyS1636 Jan. 312011-20871804.01e-07-2.69-3.450Based on 36 optical observations (of which 0 are rejected as outliers) from 2009/01/29.140 to 2009/01/30.492.
JPL Sentry0154 Jan. 312014-2061251.6e-07-3.00-3.330Analysis based on 36 observations spanning 1.3518 days (2009-Jan-29.13966 to 2009-Jan-30.49147). Diameter approximately 0.541 km. from mean, weighted H=19.0.
Assessment postings were noted by A/CC on 31 Jan.   -   References: MPEC 2009-B80
2009 BF58NEODyS1636 Jan. 312057-2090302.25e-04-5.04-5.390Based on 33 optical observations (of which 0 are rejected as outliers) from 2009/01/28.263 to 2009/01/31.246.
JPL Sentry1636 Jan. 312055-2109593.6e-04-4.89-5.370Analysis based on 33 observations spanning 2.9829 days (2009-Jan-28.26267 to 2009-Jan-31.24561). Diameter approximately 0.012 km. from mean, weighted H=27.3.
Assessment postings were noted by A/CC on 31 Jan.   -   References: MPECs 2009-B77 & 2009-B90
2009 BC58NEODyS1636 Jan. 312019-2089325.94e-08-3.70-4.310Based on 25 optical observations (of which 0 are rejected as outliers) from 2009/01/25.421 to 2009/01/30.388.
JPL Sentry0018 Jan. 312019-2106254.7e-08-3.79-4.340Analysis based on 25 observations spanning 4.9666 days (2009-Jan-25.4202 to 2009-Jan-30.38681). Diameter approximately 0.898 km. from mean, weighted H=17.9.
Assessment postings were noted by A/CC on 31 Jan.   -   References: MPEC 2009-B74
2009 BR5NEODyS1443 Jan. 302059-208182.02e-06-4.13-4.220Based on 31 optical observations (of which 0 are rejected as outliers) from 2009/01/20.456 to 2009/01/29.348.
JPL Sentry1443 Jan. 302059-207861.9e-06-4.16-4.230Analysis based on 31 observations spanning 8.8918 days (2009-Jan-20.45513 to 2009-Jan-29.34697). Diameter approximately 0.130 km. from mean, weighted H=22.1.
Assessment postings were noted by A/CC on 21 Jan., 22 Jan., 24 Jan., 26 Jan., 27 Jan., 28 Jan., 29 Jan. & 30 Jan.   -   References: MPECs 2009-B36, 2009-B49, 2009-B53, 2009-B61, 2009-B65, 2009-B69 & 2009-B72
2009 BENEODyS2149 Jan. 292037-2090165.88e-04-3.94-4.180Based on 86 optical observations (of which 5 are rejected as outliers) from 2009/01/16.362 to 2009/01/22.397.
JPL Sentry1421 Jan. 272061-2108216.3e-04-3.91-4.170Analysis based on 81 observations spanning 6.0351 days (2009-Jan-16.36105 to 2009-Jan-22.39616). Diameter approximately 0.020 km. from mean, weighted H=26.1.
Assessment postings were noted by A/CC on 18 Jan., 19 Jan., 20 Jan., 21 Jan., 22 Jan., 23 Jan., 27 Jan. & 29 Jan.   -   References: MPECs 2009-B15, 2009-B18, 2009-B19, 2009-B20, 2009-B32, 2009-B45, 2009-B48 & 2009-B61
2009 BDNEODyS1425 Jan. 26 20092060-2088176.55e-04-5.11-5.290Based on 119 optical observations (of which 1 are rejected as outliers) from 2009/01/16.277 to 2009/01/26.029.
JPL Sentry1425 Jan. 26 20092060-210796.5e-04-5.11-5.290Analysis based on 118 observations spanning 9.7514 days (2009-Jan-16.27641 to 2009-Jan-26.027773). Diameter approximately 0.007 km. from mean, weighted H=28.3.
Assessment postings were noted by A/CC on 2009 18 Jan., 19 Jan., 20 Jan., 21 Jan., 22 Jan., 23 Jan., 24 Jan. & 26 Jan.   -   References: MPECs 2009-B14, 2009-B18, 2009-B19, 2009-B20, 2009-B32, 2009-B45, 2009-B48, 2009-B49 & 2009-B53
2008 YV32NEODyS1614 Jan. 112085-209058.91e-07-6.98-7.300Based on 45 optical observations (of which 0 are rejected as outliers) from 2008/12/31.221 to 2009/01/09.089.
JPL Sentry1614 Jan. 112085-2107117.0e-06-6.14-6.800Analysis based on 45 observations spanning 8.8674 days (2008-Dec-31.22029 to 2009-Jan-09.087737). Diameter approximately 0.018 km. from mean, weighted H=26.4.
Assessment postings were noted by A/CC on 2 Jan., 3 Jan., 4 Jan., 7 Jan. & 11 Jan.   -   References: MPECs 2009-A08, 2009-A22, 2009-A30, 2009-A40 & 2009-A58
2008 YF29NEODyS1535 Jan. 9209011.87e-07-6.62-6.620Based on 46 optical observations (of which 0 are rejected as outliers) from 2008/12/30.250 to 2009/01/08.344.
JPL Sentry1433 Jan. 4R E M O V E DRisk listing removed at 0950 UTC 4 Jan.
Assessment postings were noted by A/CC on 2 Jan., 3 Jan., 4 Jan., 7 Jan. & 9 Jan.   -   References: MPECs 2009-A06, 2009-A22, 2009-A30, 2009-A40 & 2009-A49
2008 YC3JPL Sentry1425 Jan. 262088-210642.0e-08-8.26-8.340Analysis based on 34 observations spanning 29.911 days (2008-Dec-22.25277 to 2009-Jan-21.16386). Diameter approximately 0.029 km. from mean, weighted H=25.4.
NEODyS1557 Jan. 18R E M O V E D
Assessment postings were noted by A/CC on 3 Jan., 18 Jan., 21 Jan., 22 Jan. & 26 Jan.   -   References: MPECs 2009-A22, 2009-B18 & 2009-B53
2008 YO2JPL Sentry2032 Jan. 12052-2107396.8e-06-5.31-5.880Analysis based on 26 observations spanning 1.0020 days (2008-Dec-21.16512 to 2008-Dec-22.16708). Diameter approximately 0.031 km. from mean, weighted H=25.2.
NEODyS1605 Jan. 12052-208972.1e-06-5.78-5.910Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/12/21.166 to 2008/12/22.168.
Assessment postings were noted by A/CC on 1 Jan.   -   References: MPEC 2009-A02
2008 XU2NEODyS1433 Jan. 4203913.01e-07-6.64-6.640Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/12/06.262 to 2009/01/03.259.
JPL Sentry1433 Jan. 4203912.9e-07-6.65-6.650Analysis based on 44 observations spanning 27.997 days (2008-Dec-06.2616 to 2009-Jan-03.258608). Diameter approximately 0.026 km. from mean, weighted H=25.6.
Assessment postings were noted by A/CC on 1 Jan. & 4 Jan.   -   References: MPECs 2009-A02 & 2009-A30
2008 TS10NEODyS1733 Jan. 182068-208969.12e-06-7.22-7.640Based on 17 optical observations (of which 0 are rejected as outliers) from 2008/10/08.362 to 2008/10/22.499.
JPL Sentry0411 Jan. 152068-2103174.3e-05-6.63-7.420Analysis based on 17 observations spanning 14.137 days (2008-Oct-08.36174 to 2008-Oct-22.498735). Diameter approximately 0.006 km. from mean, weighted H=28.8.
Assessment postings were noted by A/CC on 13 Jan., 14 Jan., 15 Jan. & 18 Jan.   -   References: MPEC 2009-A61
144898 2004 VD17NEODyS1532 Jan. 42102-210425.64e-08-4.91-4.910Based on 974 optical observations (of which 4 are rejected as outliers) from 2002/02/16.463 to 2009/01/03.407.
An assessment posting was noted by A/CC on 4 Jan.   -   References: MPEC 2009-A30
99942 Apophis (2004 MN4)NEODyS1929 Jan. 222036-2083102.16e-05-2.59-2.620Based on 1000 optical observations (of which 5 are rejected as outliers) from 2004/03/15.108 to 2006/08/16.627, and also on seven radar data points on 2005/01/27, 2005/01/29, 2005/01/31, 2005/08/07 and 2006/05/06.
Assessment postings were noted by A/CC on 4 Jan., 5 Jan. & 22 Jan.   -   References: no recent MPECs
153814 2001 WN5NEODyS2050 Jan. 222106-213331.31e-05-2.08-2.080Based on 120 optical observations (of which 7 are rejected as outliers) from 1996/02/10.397 to 2009/01/02.211.
JPL Sentry1929 Jan. 22213311.1e-05-2.13-2.13-Analysis based on 116 observations spanning 4709.8 days (1996-Feb-10.39593 to 2009-Jan-02.21019). Diameter approximately 0.780 km. from mean, weighted H=18.2.
Assessment postings were noted by A/CC on 22 Jan.   -   References: no recent MPECs
101955 1999 RQ36NEODyS2051 Jan. 222169-219987.12e-04-1.12-1.52-Based on 290 optical observations (of which 8 are rejected as outliers) from 1999/09/11.407 to 2006/05/26.200, and also on 13 radar data points from 1999/09/21 to 2005/10/02.
JPL Sentry1929 Jan. 222169-219987.1e-04-1.12-1.52-Analysis based on 9 radar delay, 4 Doppler, and 295 optical observations spanning 2448.8 days (1999-Sep-11.4 to 2006-May-26.2). Diameter approximately 0.560 km. from mean, weighted H=20.7.
Assessment postings were noted by A/CC on 22 Jan.   -   References: no recent MPECs
C   L   E   A   R   E   D
2009 BU5JPL Sentry1550 Jan. 24R E M O V E DRisk listing removed at 0953 UTC 24 Jan.
NEODyS1550 Jan. 24R E M O V E D
Assessment postings were noted by A/CC on 21 Jan., 22 Jan. & 24 Jan.   -   References: MPECs 2009-B39, 2009-B49, 2009-B61 & 2009-B72
2009 BP5JPL Sentry1425 Jan. 26R E M O V E DRisk listing removed at 0952 UTC 26 Jan.
NEODyS1425 Jan. 26R E M O V E D
Assessment postings were noted by A/CC on 21 Jan., 22 Jan. & 26 Jan.   -   References: MPECs 2009-B34, 2009-B53, 2009-B61, 2009-B69 & 2009-B72
2009 BE2JPL Sentry1420 Jan. 22R E M O V E DRisk listing removed at 0952 UTC 22 Jan.
Assessment postings were noted by A/CC on 20 Jan., 21 Jan. & 22 Jan.   -   References: MPECs 2009-B22, 2009-B45, 2009-B48, 2009-B53 & 2009-B72
2009 AM15NEODyS1410 Jan. 14R E M O V E D
Assessment postings were noted by A/CC on 9 Jan. & 14 Jan.   -   References: MPECs 2009-A47, 2009-A68, 2009-B01, 2009-B06, 2009-B19, 2009-B20 & 2009-B53
2009 AVNEODyS1535 Jan. 9R E M O V E D
JPL Sentry1535 Jan. 9R E M O V E DRisk listing removed at 1051 UTC 9 Jan.
Assessment postings were noted by A/CC on 3 Jan., 4 Jan. & 9 Jan.   -   References: MPECs 2009-A27, 2009-A49 & 2009-B65
2009 ALJPL Sentry1426 Jan. 29R E M O V E DRisk listing removed at 0949 UTC 29 Jan.
NEODyS1417 Jan. 28R E M O V E D
Assessment postings were noted by A/CC on 2 Jan., 3 Jan., 14 Jan., 15 Jan., 16 Jan., 17 Jan., 19 Jan., 20 Jan., 21 Jan., 22 Jan., 25 Jan., 28 Jan. & 29 Jan.   -   References: MPECs 2009-A14, 2009-A22, 2009-A68, 2009-A70, 2009-B01, 2009-B06, 2009-B19, 2009-B20, 2009-B51, 2009-B65 & 2009-B69
2008 YY32JPL Sentry1433 Jan. 4R E M O V E DRisk listing removed at 1030 UTC 4 Jan.
Assessment postings were noted by A/CC on 2 Jan., 3 Jan. & 4 Jan.   -   References: MPECs 2009-A11, 2009-A22, 2009-A30 & 2009-B06
2008 YU32JPL Sentry0536 Jan. 22R E M O V E DRisk listing removed at 0954 UTC 16 Jan.
NEODyS1428 Jan. 16R E M O V E D
Assessment postings were noted by A/CC on 2 Jan., 3 Jan., 14 Jan., 15 Jan., 16 Jan., 21 Jan. & 22 Jan.   -   References: MPECs 2009-A07, 2009-A22, 2009-A68, 2009-A70, 2009-B01 & 2009-B20
2008 YU30NEODyS1556 Jan. 3R E M O V E D
JPL Sentry1556 Jan. 3R E M O V E DRisk listing removed at 1138 UTC 3 Jan.
Assessment postings were noted by A/CC on 1 Jan., 2 Jan. & 3 Jan.   -   References: MPECs 2009-A06, 2009-A22, 2009-A30, 2009-A44, 2009-A49, 2009-A57, 2009-B01, 2009-B06 & 2009-B61
2008 YT30JPL Sentry1357 Jan. 5R E M O V E DRisk listing removed at 0953 UTC 5 Jan.
NEODyS1556 Jan. 3R E M O V E D
Assessment postings were noted by A/CC on 1 Jan., 2 Jan., 3 Jan. & 5 Jan.   -   References: MPECs 2009-A06, 2009-A22, 2009-A31, 2009-A70, 2009-B01, 2009-B06, 2009-B20, 2009-B53 & 2009-B60
2008 YH30JPL Sentry2217 Jan. 2R E M O V E DRisk listing removed at 2205 UTC 2 Jan.
An assessment posting was noted by A/CC on 2 Jan.   -   References: MPECs 2009-A06 & 2009-A22
2008 YF30JPL Sentry2217 Jan. 2R E M O V E DRisk listing removed at 2135 UTC 2 Jan.
NEODyS1414 Jan. 2R E M O V E D
Assessment postings were noted by A/CC on 1 Jan. & 2 Jan.   -   References: MPECs 2009-A06 & 2009-A22
2008 YE29NEODyS1556 Jan. 3R E M O V E D
JPL Sentry1556 Jan. 3R E M O V E DRisk listing removed at 1129 UTC 3 Jan.
Assessment postings were noted by A/CC on 2 Jan. & 3 Jan.   -   References: MPECs 2009-A06, 2009-A22, 2009-A30, 2009-A44, 2009-A58, 2009-A61, 2009-B06, 2009-B18, 2009-B19, 2009-B49, 2009-B61 & 2009-B72
2008 YB29JPL Sentry1959 Jan. 1R E M O V E DRisk listing removed at 1949 UTC 1 Jan.
An assessment posting was noted by A/CC on 1 Jan.   -   References: MPECs 2009-A02, 2009-A06, 2009-A22, 2009-A44 & 2009-B45
2008 YA29JPL Sentry1959 Jan. 1R E M O V E DRisk listing removed at 1949 UTC 1 Jan.
NEODyS1604 Jan. 1R E M O V E D
An assessment posting was noted by A/CC on 1 Jan.   -   References: MPECs 2009-A02, 2009-A06, 2009-A22, 2009-A44, 2009-A49, 2009-B19 & 2009-B53
2007 RT9JPL Sentry0536 Jan. 22R E M O V E DRisk listing removed at 1853 UTC 16 Jan.
Assessment postings were noted by A/CC on 16 Jan., 21 Jan. & 22 Jan.   -   References: MPEC 2009-B02
2005 YR3NEODyS1426 Jan. 29R E M O V E D
JPL Sentry1426 Jan. 29R E M O V E DRisk listing removed at 0612 UTC 29 Jan.
Assessment postings were noted by A/CC on 29 Jan.   -   References: MPECs 2009-B68 & 2009-B72
2004 XY130JPL Sentry2359 Jan. 28R E M O V E DRisk listing removed at 1200 UTC 29 Oct.
An assessment posting was noted by A/CC on 28 Jan.   -   References: no recent MPECs

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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