A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During February 2008

Compiled at 2358 UTC on 29 February 2008


<< January 2008 CRT | CRT Archive Index | March 2008 CRT >>

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

Something missing? Here are the old histories for 99942 Apophis (2004 MN4) and 144898 2004 VD17. Check the archives for others.

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.
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
2008 DK5JPL Sentry2208 Feb. 292011-21071141.3e-07-4.51-5.430Analysis based on 12 observations spanning .97959 days (2008-Feb-28.48101 to 2008-Feb-29.460602). Diameter approximately 0.235 km. from mean, weighted H=20.8.
Assessment postings were noted by A/CC on 29 Feb.   -   References: MPEC 2008-D60
2008 DJ5JPL Sentry2208 Feb. 292013-2097237.7e-09-5.27-5.710Analysis based on 12 observations spanning 1.0406 days (2008-Feb-28.40456 to 2008-Feb-29.44512). Diameter approximately 0.380 km. from mean, weighted H=19.7.
Assessment postings were noted by A/CC on 29 Feb.   -   References: MPEC 2008-D59
2008 DG5JPL Sentry2355 Feb. 292010-21062783.1e-07-3.50-4.180Analysis based on 15 observations spanning 1.0647 days (2008-Feb-28.2778 to 2008-Feb-29.34249). Diameter approximately 0.442 km. from mean, weighted H=19.4.
Assessment postings were noted by A/CC on 29 Feb.   -   References: MPEC 2008-D57
2008 DG4JPL Sentry2238 Feb. 292069-208941.2e-07-6.40-6.690Analysis based on 16 observations spanning 1.1589 days (2008-Feb-27.22883 to 2008-Feb-28.38775). Diameter approximately 0.061 km. from mean, weighted H=23.7.
NEODyS1549 Feb. 292062-208946.98e-08-6.63-6.950Based on 16 optical observations (of which 0 are rejected as outliers) from 2008/02/27.230 to 2008/02/28.389.
Assessment postings were noted by A/CC on 28 Feb. & 29 Feb.   -   References: MPEC 2008-D49 plus DOUs 2008-D50 & 2008-D55
2008 DA4JPL Sentry2208 Feb. 292056-210491.1e-07-6.52-6.690Analysis based on 19 observations spanning .93863 days (2008-Feb-27.28072 to 2008-Feb-28.21935). Diameter approximately 0.052 km. from mean, weighted H=24.1.
NEODyS1549 Feb. 292084-208754.84e-07-6.06-6.090Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/02/27.281 to 2008/02/28.220.
Assessment postings were noted by A/CC on 27 Feb., 28 Feb. & 29 Feb.   -   References: MPEC 2008-D47 plus DOU 2008-D55
2008 DVNEODyS1555 Feb. 282011-2090112.56e-09-4.22-4.460Based on 22 optical observations (of which 0 are rejected as outliers) from 2008/02/26.121 to 2008/02/27.145.
Assessment postings were noted by A/CC on 28 Feb.   -   References: MPEC 2008-D43
2008 DBNEODyS1549 Feb. 292046-2089222.5e-05-5.01-5.080Based on 53 optical observations (of which 2 are rejected as outliers) from 2008/02/18.243 to 2008/02/28.203.
JPL Sentry1548 Feb. 292046-2108244.3e-05-4.78-4.850Analysis based on 52 observations spanning 9.9601 days (2008-Feb-18.242 to 2008-Feb-28.20208). Diameter approximately 0.025 km. from mean, weighted H=25.7.
Assessment postings were noted by A/CC on 19 Feb., 20 Feb., 23 Feb., 25 Feb., 26 Feb., 27 Feb. & 29 Feb.   -   References: MPEC 2008-D14 plus DOUs 2008-D27, 2008-D29, 2008-D36, 2008-D42 & 2008-D55
2008 CL116JPL Sentry2355 Feb. 29210215.5e-10-7.04-7.040Analysis based on 70 observations spanning 18.004 days (2008-Feb-10.40671 to 2008-Feb-28.41025). Diameter approximately 0.290 km. from mean, weighted H=20.3.
NEODyS1530 Feb. 25R E M O V E D
Assessment postings were noted by A/CC on 13 Feb., 14 Feb., 16 Feb., 18 Feb., 19 Feb., 21 Feb., 25 Feb., 27 Feb., 28 Feb. & 29 Feb.   -   References: MPEC 2008-C83 plus DOUs 2008-D01, 2008-D11, 2008-D18, 2008-D29, 2008-D42, 2008-D50 & 2008-D55
2008 CM74NEODyS1525 Feb. 172069-208121.71e-08-9.55-9.670Based on 17 optical observations (of which 0 are rejected as outliers) from 2008/02/08.369 to 2008/02/15.204.
JPL Sentry1525 Feb. 172079-210071.8e-06-7.67-7.990Analysis based on 17 observations spanning 6.8352 days (2008-Feb-08.36778 to 2008-Feb-15.20297). Diameter approximately 0.008 km. from mean, weighted H=28.0.
Assessment postings were noted by A/CC on 12 Feb., 13 Feb. & 17 Feb.   -   References: MPEC 2008-C76 plus DOUs 2008-C78 & 2008-D05
2008 CC71NEODyS1355 Feb. 212034-2083321.02e-04-4.04-4.200Based on 32 optical observations (of which 0 are rejected as outliers) from 2008/02/09.397 to 2008/02/19.487.
JPL Sentry1354 Feb. 212033-2082261.0e-04-4.04-4.200Analysis based on 32 observations spanning 10.090 days (2008-Feb-09.39625 to 2008-Feb-19.48606). Diameter approximately 0.036 km. from mean, weighted H=24.9.
Assessment postings were noted by A/CC on 11 Feb., 12 Feb., 13 Feb., 14 Feb., 16 Feb., 20 Feb. & 21 Feb.   -   References: MPEC 2008-C73 plus DOUs 2008-C78, 2008-C92, 2008-D01, 2008-D17 & 2008-D18
2008 CK70NEODyS1633 Feb. 162030-203242.79e-04-3.19-3.190Based on 77 optical observations (of which 0 are rejected as outliers) from 2008/02/09.342 to 2008/02/14.007.
JPL Sentry1632 Feb. 162030-203122.9e-04-3.18-3.180Analysis based on 77 observations spanning 4.6648 days (2008-Feb-09.34106 to 2008-Feb-14.00589). Diameter approximately 0.031 km. from mean, weighted H=25.2.
Assessment postings were noted by A/CC on 11 Feb., 12 Feb., 13 Feb., 14 Feb., 15 Feb. & 16 Feb.   -   References: MPEC 2008-C69 plus DOUs 2008-C77, 2008-C78, 2008-C92, 2008-C106 & 2008-D01
2008 CF22NEODyS1535 Feb. 11204716.73e-09-8.54-8.540Based on 61 optical observations (of which 1 are rejected as outliers) from 2008/02/09.064 to 2008/02/10.217.
JPL Sentry1622 Feb. 10R E M O V E DRisk listing removed at 1306 UTC 10 Feb.
Assessment postings were noted by A/CC on 9 Feb., 10 Feb. & 11 Feb.   -   References: MPEC 2008-C57 plus DOUs 2008-C59 & 2008-C72
2008 CB6NEODyS1632 Feb. 162066-208724.73e-08-8.58-8.830Based on 35 optical observations (of which 0 are rejected as outliers) from 2008/02/07.293 to 2008/02/16.046.
JPL Sentry1632 Feb. 162093-210731.1e-05-6.37-6.510Analysis based on 35 observations spanning 8.7528 days (2008-Feb-07.29202 to 2008-Feb-16.04487). Diameter approximately 0.013 km. from mean, weighted H=27.1.
Assessment postings were noted by A/CC on 8 Feb., 9 Feb., 10 Feb., 11 Feb., 12 Feb., 13 Feb. & 16 Feb.   -   References: MPEC 2008-C42 plus DOUs 2008-C59, 2008-C72, 2008-C77, 2008-C78 & 2008-D01
2008 CT1NEODyS0834 Feb. 62041-2090363.27e-05-5.80-6.190Based on 13 optical observations (of which 0 are rejected as outliers) from 2008/02/03.336 to 2008/02/03.984.
JPL Sentry0209 Feb. 52041-21071079.2e-05-5.15-5.480Analysis based on 13 observations spanning .64893 days (2008-Feb-03.33478 to 2008-Feb-03.98371). Diameter approximately 0.011 km. from mean, weighted H=27.5.
Assessment postings were noted by A/CC on 5 Feb. & 6 Feb.   -   References: MPEC 2008-C32
2008 CJJPL Sentry1558 Feb. 92033-210638.3e-07-7.59-7.600Analysis based on 13 observations spanning 1.0540 days (2008-Feb-02.24586 to 2008-Feb-03.299901). Diameter approximately 0.012 km. from mean, weighted H=27.3.
NEODyS1558 Feb. 9R E M O V E D
Assessment postings were noted by A/CC on 2 Feb., 3 Feb. & 9 Feb.   -   References: MPEC 2008-C10 plus DOU 2008-C48
2008 BO16NEODyS1556 Feb. 13204515.04e-07-4.76-4.760Based on 58 optical observations (of which 3 are rejected as outliers) from 2008/01/30.382 to 2008/02/13.183.
JPL Sentry1555 Feb. 13204513.0e-07-4.99-4.990Analysis based on 57 observations spanning 13.801 days (2008-Jan-30.38083 to 2008-Feb-13.18203). Diameter approximately 0.090 km. from mean, weighted H=22.9.
Assessment postings were noted by A/CC on 31 Jan., 1 Feb., 2 Feb., 3 Feb., 6 Feb., 7 Feb., 8 Feb., 9 Feb., 10 Feb., 11 Feb., 12 Feb. & 13 Feb.   -   References: MPEC 2008-B69 plus DOUs 2008-C04, 2008-C17, 2008-C34, 2008-C35, 2008-C40, 2008-C48, 2008-C59, 2008-C72, 2008-C77 & 2008-C78
2008 BN16NEODyS1559 Feb. 92067-208673.19e-07-6.90-7.190Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/01/30.248 to 2008/02/03.279.
JPL Sentry1558 Feb. 92067-208652.6e-07-6.98-7.180Analysis based on 20 observations spanning 4.0304 days (2008-Jan-30.24765 to 2008-Feb-03.27809). Diameter approximately 0.022 km. from mean, weighted H=25.9.
Assessment postings were noted by A/CC on 31 Jan., 1 Feb., 2 Feb. & 9 Feb.   -   References: MPEC 2008-B68 plus DOUs 2008-C04 & 2008-C48
2008 BC15NEODyS1523 Feb. 1207212.44e-07-7.22-7.220Based on 25 optical observations (of which 2 are rejected as outliers) from 2008/01/30.313 to 2008/01/31.272.
JPL Sentry1522 Feb. 12072-209421.4e-06-6.55-6.740Analysis based on 24 observations spanning .95917 days (2008-Jan-30.31193 to 2008-Jan-31.2711). Diameter approximately 0.016 km. from mean, weighted H=26.6.
Assessment postings were noted by A/CC on 31 Jan. & 1 Feb.   -   References: DOUs 2008-B67 & 2008-C01
2008 AO112NEODyS1858 Feb. 26202511.63e-09-6.21-6.210Based on 8 optical observations (of which 0 are rejected as outliers) from 2008/01/11.090 to 2008/01/12.099.
JPL Sentry2104 Feb. 252009-2099463.9e-07-2.94-2.960Analysis based on 8 observations spanning 1.0097 days (2008-Jan-11.08899 to 2008-Jan-12.098698). Diameter approximately 0.310 km. from mean, weighted H=20.2.
Assessment postings were noted by A/CC on 25 Feb. & 26 Feb.   -   References: MPEC 2008-D33
2008 AF4JPL Sentry1704 Feb. 272078-2099162.0e-05-2.37-2.491Analysis based on 551 observations spanning 47.539 days (2008-Jan-10.39652 to 2008-Feb-26.93579). Diameter approximately 0.390 km. from mean, weighted H=19.7.
NEODyS1627 Feb. 272078-2090101.6e-05-2.46-2.491Based on 555 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/02/26.937.
Assessment postings were noted by A/CC on 31 Jan., 1 Feb., 2 Feb., 3 Feb., 4 Feb., 5 Feb., 6 Feb., 7 Feb., 8 Feb., 9 Feb., 10 Feb., 11 Feb., 12 Feb., 13 Feb., 14 Feb., 15 Feb., 16 Feb., 17 Feb., 18 Feb., 19 Feb. & 27 Feb.   -   References: DOUs 2008-B67, 2008-C01, 2008-C04, 2008-C17, 2008-C23, 2008-C33, 2008-C34, 2008-C35, 2008-C40, 2008-C48, 2008-C59, 2008-C72, 2008-C77, 2008-C78, 2008-C92, 2008-C106, 2008-D01, 2008-D05, 2008-D11, 2008-D13 & 2008-D42
144898 2004 VD17NEODyS1802 Feb. 142102-210422.86e-07-4.21-4.210Based on 964 optical observations (of which 4 are rejected as outliers) from 2002/02/16.463 to 2008/02/13.515.
JPL Sentry1526 Feb. 14R E M O V E DRisk listing removed at 1210 UTC 14 Feb.
Assessment postings were noted by A/CC on 14 Feb.   -   References: DOU 2008-C92
C   L   E   A   R   E   D
2008 DYJPL Sentry1555 Feb. 28R E M O V E DRisk listing removed at 1117 UTC 28 Feb.
Assessment postings were noted by A/CC on 27 Feb. & 28 Feb.   -   References: MPEC 2008-D46 plus DOU 2008-D50
2008 DJNEODyS1555 Feb. 28R E M O V E D
JPL Sentry1627 Feb. 27R E M O V E DRisk listing removed at 1025 UTC 27 Feb.
Assessment postings were noted by A/CC on 26 Feb., 27 Feb. & 28 Feb.   -   References: MPEC 2008-D35 plus DOUs 2008-D42, 2008-D50 & 2008-D55
2008 DEJPL Sentry1530 Feb. 25R E M O V E DRisk listing removed at 1033 UTC 25 Feb.
NEODyS1530 Feb. 25R E M O V E D
Assessment postings were noted by A/CC on 22 Feb., 23 Feb. & 25 Feb.   -   References: MPEC 2008-D26 plus DOUs 2008-D29, 2008-D42 & 2008-D50
2008 CG119NEODyS1525 Feb. 17R E M O V E D
Assessment postings were noted by A/CC on 15 Feb. & 17 Feb.   -   References: MPEC 2008-C100 plus DOUs 2008-D05, 2008-D11, 2008-D28 & 2008-D36
2008 CC119JPL Sentry1511 Feb. 15R E M O V E DRisk listing removed at 1127 UTC 15 Feb.
Assessment postings were noted by A/CC on 14 Feb. & 15 Feb.   -   References: MPEC 2008-C97 plus DOU 2008-C106
2008 CR118JPL Sentry2200 Feb. 19R E M O V E DRisk listing removed at 2143 UTC 19 Feb.
NEODyS1632 Feb. 16R E M O V E D
Assessment postings were noted by A/CC on 14 Feb., 15 Feb., 16 Feb. & 19 Feb.   -   References: MPEC 2008-C101 plus DOUs 2008-D01, 2008-D11, 2008-D13, 2008-D18, 2008-D25, 2008-D29, 2008-D36 & 2008-D55
2008 CE22JPL Sentry1610 Feb. 12R E M O V E DRisk listing removed at 1052 UTC 12 Feb.
Assessment postings were noted by A/CC on 9 Feb., 10 Feb. & 12 Feb.   -   References: MPEC 2008-C56 plus DOUs 2008-C59, 2008-C77, 2008-C78, 2008-D01 & 2008-D05
2008 CD22JPL Sentry1622 Feb. 10R E M O V E DRisk listing removed at 1255 UTC 10 Feb.
Assessment postings were noted by A/CC on 9 Feb. & 10 Feb.   -   References: MPEC 2008-C55 plus DOUs 2008-C59, 2008-C72, 2008-C77, 2008-C78, 2008-C92, 2008-C106, 2008-D05, 2008-D11, 2008-D13, 2008-D27, 2008-D29, 2008-D50 & 2008-D55
2008 CB22JPL Sentry1610 Feb. 12R E M O V E DRisk listing removed at 1302 UTC 12 Feb.
Assessment postings were noted by A/CC on 9 Feb., 10 Feb. & 12 Feb.   -   References: MPEC 2008-C53 plus DOUs 2008-C59, 2008-C77, 2008-C92, 2008-D05, 2008-D13 & 2008-D29
2008 CZ21JPL Sentry1610 Feb. 12R E M O V E DRisk listing removed at 1222 UTC 12 Feb.
NEODyS1610 Feb. 12R E M O V E D
Assessment postings were noted by A/CC on 9 Feb., 10 Feb. & 12 Feb.   -   References: MPEC 2008-C51 plus DOUs 2008-C77, 2008-C78, 2008-D01 & 2008-D36
2008 CM20JPL Sentry1622 Feb. 10R E M O V E DRisk listing removed at 1226 UTC 10 Feb.
NEODyS1622 Feb. 10R E M O V E D
Assessment postings were noted by A/CC on 9 Feb. & 10 Feb.   -   References: MPEC 2008-C47 plus DOUs 2008-C59, 2008-D05, 2008-D11, 2008-D18 & 2008-D42
2008 CE6JPL Sentry1534 Feb. 11R E M O V E DRisk listing removed at 1025 UTC 11 Feb.
Assessment postings were noted by A/CC on 8 Feb. & 11 Feb.   -   References: MPEC 2008-C45 plus DOUs 2008-C72, 2008-C77, 2008-C78, 2008-D18 & 2008-D50
2008 CD6JPL Sentry1534 Feb. 11R E M O V E DRisk listing removed at 1048 UTC 11 Feb.
NEODyS1534 Feb. 11R E M O V E D
Assessment postings were noted by A/CC on 8 Feb., 9 Feb., 10 Feb. & 11 Feb.   -   References: MPEC 2008-C44 plus DOUs 2008-C59 & 2008-C72
2008 CA5JPL Sentry1558 Feb. 9R E M O V E DRisk listing removed at 1158 UTC 9 Feb.
NEODyS1558 Feb. 9R E M O V E D
Assessment postings were noted by A/CC on 7 Feb., 8 Feb. & 9 Feb.   -   References: MPEC 2008-C38 plus DOUs 2008-C40, 2008-C48, 2008-C72 & 2008-C92
2008 CS1JPL Sentry1632 Feb. 16R E M O V E DRisk listing removed at 1150 UTC 16 Feb.
NEODyS1632 Feb. 16R E M O V E D
Assessment postings were noted by A/CC on 4 Feb., 5 Feb., 8 Feb., 9 Feb., 10 Feb., 14 Feb. & 16 Feb.   -   References: MPEC 2008-C31 plus DOUs 2008-C40, 2008-C48, 2008-C59, 2008-C92, 2008-D01 & 2008-D11
2008 CKJPL Sentry1547 Feb. 4R E M O V E DRisk listing removed at 1046 UTC 4 Feb.
Assessment postings were noted by A/CC on 2 Feb. & 4 Feb.   -   References: MPEC 2008-C11 plus DOUs 2008-C23, 2008-C33, 2008-C35 & 2008-D25
2008 BT18JPL Sentry1559 Feb. 6R E M O V E DRisk listing removed at 1056 UTC 6 Feb.
NEODyS1559 Feb. 6R E M O V E D
Assessment postings were noted by A/CC on 2 Feb., 3 Feb., 4 Feb. & 6 Feb.   -   References: MPEC 2008-C03 plus DOUs 2008-C17, 2008-C23, 2008-C34, 2008-C35, 2008-C40, 2008-C48, 2008-C59, 2008-C72, 2008-C77, 2008-C78, 2008-C92, 2008-D27, 2008-D29, 2008-D50 & 2008-D55
2008 BE15JPL Sentry1603 Feb. 2R E M O V E DRisk listing removed at 1048 UTC 2 Feb.
NEODyS1523 Feb. 1R E M O V E D
Assessment postings were noted by A/CC on 31 Jan., 1 Feb. & 2 Feb.   -   References: DOUs 2008-B67, 2008-C01, 2008-C04 & 2008-C48
2008 BD15JPL Sentry1547 Feb. 4R E M O V E DRisk listing removed at 1131 UTC 4 Feb.
NEODyS1603 Feb. 2R E M O V E D
Assessment postings were noted by A/CC on 31 Jan., 1 Feb., 2 Feb., 3 Feb. & 4 Feb.   -   References: DOUs 2008-C01, 2008-C04, 2008-C17, 2008-C23, 2008-C34, 2008-C35, 2008-C40, 2008-C48, 2008-C59, 2008-C72, 2008-C77, 2008-C78, 2008-C92, 2008-C106, 2008-D11 & 2008-D50
2007 YV56JPL Sentry1530 Jan. 31R E M O V E DRisk listing removed at 1109 UTC 31 Jan.
Assessment postings were noted by A/CC on 31 Jan.   -   References: DOUs 2008-B67, 2008-C01, 2008-C33 & 2008-C77

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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