A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During February 2010

Compiled at 2358 UTC on 28 February 2010

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[ 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.

Notes: The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both risk monitors also post 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

2010 DM56	NEODyS	1634 Feb. 27	2047-2089	23	8.45e-07	-3.61	-4.35	0	Based on 36 optical observations (of which 0 are rejected as outliers) from 2010/02/19.271 to 2010/02/26.864.
	JPL Sentry	0002 Feb. 27	2047-2109	30	9.7e-07	-3.56	-4.32	0	Analysis based on 36 observations spanning 7.5932 days (2010-Feb-19.26983 to 2010-Feb-26.86307). Diameter approximately 0.340 km. from mean, weighted H=20.0.
	Assessment postings were noted by A/CC on 27 Feb. - References: MPEC 2010-D85

2010 CN44	NEODyS	1640 Feb. 20	2040-2070	3	2.94e-07	-3.79	-4.02	0	Based on 21 optical observations (of which 0 are rejected as outliers) from 2010/02/15.111 to 2010/02/19.169.
	JPL Sentry	1640 Feb. 20	2040-2071	6	4.1e-07	-3.58	-3.72	0	Analysis based on 21 observations spanning 4.0584 days (2010-Feb-15.11003 to 2010-Feb-19.16839). Diameter approximately 0.480 km. from mean, weighted H=19.2.
	Assessment postings were noted by A/CC on 17 Feb., 19 Feb. & 20 Feb. - References: MPECs 2010-D08, 2010-D48 & 2010-D56

2010 CS19	JPL Sentry	1422 Feb. 19	2104	4	3.7e-05	-6.30	-6.33	0	Analysis based on 40 observations spanning 3.1225 days (2010-Feb-15.32692 to 2010-Feb-18.449459). Diameter approximately 0.008 km. from mean, weighted H=28.0.
	NEODyS	1422 Feb. 19	R E M O V E D
	Assessment postings were noted by A/CC on 16 Feb., 17 Feb., 18 Feb. & 19 Feb. - References: MPECs 2010-C77, 2010-D17, 2010-D39, 2010-D48 & 2010-D59

2010 CQ19	JPL Sentry	1640 Feb. 20	2105	1	5.0e-08	-8.53	-8.53	0	Analysis based on 22 observations spanning 4.0576 days (2010-Feb-15.27907 to 2010-Feb-19.33667). Diameter approximately 0.013 km. from mean, weighted H=27.1.
	NEODyS	1447 Feb. 18	R E M O V E D
	Assessment postings were noted by A/CC on 16 Feb., 17 Feb., 18 Feb., 19 Feb. & 20 Feb. - References: MPECs 2010-C75, 2010-D17, 2010-D39, 2010-D48 & 2010-D56

2010 CL19	NEODyS	1422 Feb. 25	2016-2083	36	1.15e-06	-2.10	-2.44	0	Based on 33 optical observations (of which 1 are rejected as outliers) from 2010/02/13.096 to 2010/02/17.108.
	JPL Sentry	2201 Feb. 24	2019-2108	40	1.4e-06	-2.01	-2.39	0	Analysis based on 32 observations spanning 4.0113 days (2010-Feb-13.09558 to 2010-Feb-17.10688). Diameter approximately 0.967 km. from mean, weighted H=17.7.
	Assessment postings were noted by A/CC on 24 Feb. & 25 Feb. - References: MPECs 2010-C70, 2010-D17 & 2010-D39

2010 CK19	NEODyS	2215 Feb. 28	2081-2089	3	7.05e-07	-7.94	-8.14	0	Based on 33 optical observations (of which 0 are rejected as outliers) from 2010/02/14.334 to 2010/02/16.470.
	JPL Sentry	1600 Feb. 23	2089-2107	5	1.3e-06	-7.68	-8.11	0	Analysis based on 33 observations spanning 2.1365 days (2010-Feb-14.33293 to 2010-Feb-16.46946). Diameter approximately 0.009 km. from mean, weighted H=27.9.
	Assessment postings were noted by A/CC on 16 Feb., 17 Feb., 23 Feb. & 28 Feb. - References: MPECs 2010-C69, 2010-D04, 2010-D17 & 2010-D73

2010 CR5	NEODyS	1422 Feb. 19	2030-2087	7	2.6e-08	-4.62	-4.80	0	Based on 35 optical observations (of which 0 are rejected as outliers) from 2010/02/09.328 to 2010/02/19.212.
	JPL Sentry	1422 Feb. 19	2032-2087	6	2.7e-08	-4.69	-4.90	0	Analysis based on 35 observations spanning 9.8836 days (2010-Feb-09.3273 to 2010-Feb-19.21089). Diameter approximately 0.369 km. from mean, weighted H=19.8.
	Assessment postings were noted by A/CC on 11 Feb., 12 Feb., 14 Feb., 15 Feb., 16 Feb., 17 Feb., 18 Feb. & 19 Feb. - References: MPECs 2010-C44, 2010-C53, 2010-C60, 2010-D17, 2010-D39 & 2010-D48

2010 CA	NEODyS	2213 Feb. 28	2022	1	5.5e-06	-4.31	-4.31	0	Based on 61 optical observations (of which 0 are rejected as outliers) from 2010/02/05.197 to 2010/02/14.098.
	JPL Sentry	1640 Feb. 20	2022	1	5.2e-06	-4.33	-4.33	0	Analysis based on 61 observations spanning 8.9008 days (2010-Feb-05.19638 to 2010-Feb-14.097229). Diameter approximately 0.043 km. from mean, weighted H=24.5.
	Assessment postings were noted by A/CC on 6 Feb., 7 Feb., 8 Feb., 9 Feb., 11 Feb., 12 Feb., 13 Feb., 14 Feb., 15 Feb., 16 Feb., 19 Feb., 20 Feb. & 28 Feb. - References: MPECs 2010-C16, 2010-C18, 2010-C22, 2010-C24, 2010-C43, 2010-C46, 2010-C48, 2010-C53, 2010-C60, 2010-D48 & 2010-D56

2005 YU55	NEODyS	2103 Feb. 24	2043-2109	95	4.13e-04	-2.16	-2.51	1	Based on 46 optical observations (of which 0 are rejected as outliers) from 2005/12/24.299 to 2010/02/20.542.
	JPL Sentry	2000 Feb. 24	2043-2109	53	9.5e-04	-1.79	-1.90	1	Analysis based on 46 observations spanning 1519.2 days (2005-Dec-24.29832 to 2010-Feb-20.541105). Diameter approximately 0.140 km. from mean, weighted H=22.0.
	Assessment postings were noted by A/CC on 24 Feb. - References: MPEC 2010-D58

153814 2001 WN5	JPL Sentry	1802 Feb. 19	2133	1	7.6e-05	-1.30	-1.30	-	Analysis based on 121 observations spanning 5122.0 days (1996-Feb-10.39593 to 2010-Feb-18.441914). Diameter approximately 0.780 km. from mean, weighted H=18.2.
	NEODyS	1422 Feb. 19	2107-2133	2	1.04e-04	-1.18	-1.18	-	Based on 125 optical observations (of which 7 are rejected as outliers) from 1996/02/10.397 to 2010/02/18.443.
	Assessment postings were noted by A/CC on 13 Feb. & 19 Feb. - References: DOUs 2010-C46 & 2010-D48
C L E A R E D
2010 DW1	JPL Sentry	1640 Feb. 20	R E M O V E D						Risk listing removed at 1132 UTC 20 Feb.
2010 DW1	An assessment posting was noted by A/CC on 20 Feb. - References: MPECs 2010-D52, 2010-D56, 2010-D59, 2010-D61, 2010-D78 & 2010-D83

2010 DJ1	JPL Sentry	2102 Feb. 19	R E M O V E D						Risk listing removed at 2051 UTC 19 Feb.
2010 DJ1	Assessment postings were noted by A/CC on 18 Feb. & 19 Feb. - References: MPECs 2010-D43, 2010-D56, 2010-D59, 2010-D60 & 2010-D78

2010 DH1	JPL Sentry	1422 Feb. 19	R E M O V E D						Risk listing removed at 1133 UTC 19 Feb.
2010 DH1	Assessment postings were noted by A/CC on 18 Feb. & 19 Feb. - References: MPECs 2010-D42, 2010-D48 & 2010-D56

2010 DG1	NEODyS	1419 Feb. 26	R E M O V E D
	JPL Sentry	1419 Feb. 26	R E M O V E D						Risk listing removed at 1051 UTC 26 Feb.
	Assessment postings were noted by A/CC on 18 Feb., 19 Feb., 20 Feb., 24 Feb. & 26 Feb. - References: MPECs 2010-D41, 2010-D56, 2010-D76 & 2010-D83

2010 DP	NEODyS	1422 Feb. 19	R E M O V E D
	JPL Sentry	1422 Feb. 19	R E M O V E D						Risk listing removed at 1131 UTC 19 Feb.
	Assessment postings were noted by A/CC on 17 Feb., 18 Feb. & 19 Feb. - References: MPECs 2010-D38, 2010-D48, 2010-D56, 2010-D76, 2010-D78 & 2010-D83

2010 DM	JPL Sentry	1500 Feb. 24	R E M O V E D						Risk listing removed at 1054 UTC 24 Feb.
	NEODyS	1500 Feb. 24	R E M O V E D
	Assessment postings were noted by A/CC on 17 Feb., 18 Feb., 19 Feb., 20 Feb. & 24 Feb. - References: MPECs 2010-D34, 2010-D39, 2010-D48, 2010-D56 & 2010-D76

2010 DJ	JPL Sentry	1447 Feb. 18	R E M O V E D						Risk listing removed at 1133 UTC 18 Feb.
2010 DJ	Assessment postings were noted by A/CC on 17 Feb. & 18 Feb. - References: MPECs 2010-D31 & 2010-D39

2010 DA	JPL Sentry	1447 Feb. 18	R E M O V E D						Risk listing removed at 1101 UTC 18 Feb.
	NEODyS	1447 Feb. 18	R E M O V E D
	Assessment postings were noted by A/CC on 17 Feb. & 18 Feb. - References: MPECs 2010-D16, 2010-D39, 2010-D48, 2010-D59, 2010-D61, 2010-D73, 2010-D78 & 2010-D87

2010 CH55	JPL Sentry	1422 Feb. 25	R E M O V E D						Risk listing removed at 1049 UTC 25 Feb.
	NEODyS	1640 Feb. 20	R E M O V E D
	Assessment postings were noted by A/CC on 17 Feb., 18 Feb., 19 Feb., 20 Feb. & 25 Feb. - References: MPECs 2010-D27, 2010-D48, 2010-D56 & 2010-D78

2010 CO44	JPL Sentry	2231 Feb. 17	R E M O V E D						Risk listing removed at 2135 UTC 17 Feb.
	NEODyS	2012 Feb. 17	R E M O V E D
	Assessment postings were noted by A/CC on 16 Feb. & 17 Feb. - References: MPECs 2010-D09, 2010-D17, 2010-D39, 2010-D48 & 2010-D78

2010 CJ19	JPL Sentry	1419 Feb. 16	R E M O V E D						Risk listing removed at 1046 UTC 16 Feb.
2010 CJ19	An assessment posting was noted by A/CC on 16 Feb. - References: MPECs 2010-C68, 2010-D04, 2010-D17, 2010-D59, 2010-D73 & 2010-D83

2010 CG19	JPL Sentry	1640 Feb. 20	R E M O V E D						Risk listing removed at 1049 UTC 20 Feb.
	NEODyS	1640 Feb. 20	R E M O V E D
	Assessment postings were noted by A/CC on 16 Feb., 18 Feb., 19 Feb. & 20 Feb. - References: MPECs 2010-C66, 2010-D39, 2010-D48, 2010-D56, 2010-D78 & 2010-D83

2010 CF19	JPL Sentry	2144 Feb. 17	R E M O V E D						Risk listing removed at 2131 UTC 17 Feb.
	NEODyS	2012 Feb. 17	R E M O V E D
	Assessment postings were noted by A/CC on 16 Feb. & 17 Feb. - References: MPECs 2010-C65, 2010-D17, 2010-D39, 2010-D48, 2010-D56 & 2010-D78

2010 CD19	JPL Sentry	2102 Feb. 17	R E M O V E D						Risk listing removed at 2050 UTC 17 Feb.
2010 CD19	Assessment postings were noted by A/CC on 16 Feb. & 17 Feb. - References: MPECs 2010-C63, 2010-D17, 2010-D39, 2010-D56 & 2010-D78

2010 CM1	NEODyS	2007 Feb. 13	R E M O V E D
2010 CM1	Assessment postings were noted by A/CC on 11 Feb. & 13 Feb. - References: MPECs 2010-C39, 2010-C48, 2010-C53 & 2010-D04

2010 CJ1	NEODyS	1438 Feb. 11	R E M O V E D
	JPL Sentry	1438 Feb. 11	R E M O V E D						Risk listing removed at 1051 UTC 11 Feb.
	Assessment postings were noted by A/CC on 10 Feb. & 11 Feb. - References: MPECs 2010-C35, 2010-C43, 2010-C46, 2010-C48, 2010-C60 & 2010-D17

2009 WJ1	JPL Sentry	1419 Feb. 16	R E M O V E D						Risk listing removed at 1050 UTC 16 Feb.
2009 WJ1	An assessment posting was noted by A/CC on 16 Feb. - References: MPEC 2010-D04

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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