A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted in the Last 31 Days

Compiled at 2210 UTC on 3 February 2012

[ The Tracking News | ephemerides | cleared ]

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 CLOMON2 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

2012 CU	JPL Sentry	2203 Feb. 3	2044	1	1.5e-10	-10.01	-10.0	0	Analysis based on 16 observations spanning .97758 days (2012-Feb-02.40401 to 2012-Feb-03.38159). Diameter approximately 0.024 km. from mean, weighted H=25.7.
2012 CU	An assessment posting was noted by A/CC on 3 Feb. - References: MPEC 2012-C21

2012 BP123	JPL Sentry	0053 Feb. 2	2058-2100	8	3.6e-09	-9.71	-9.88	0	Analysis based on 13 observations spanning .91365 days (2012-Jan-31.31538 to 2012-Feb-01.22903). Diameter approximately 0.013 km. from mean, weighted H=27.1.
2012 BP123	An assessment posting was noted by A/CC on 2 Feb. - References: MPEC 2012-C04

2012 BN123	JPL Sentry	0053 Feb. 2	2074-2110	4	4.5e-09	-7.68	-8.07	0	Analysis based on 10 observations spanning .93800 days (2012-Jan-31.19728 to 2012-Feb-01.13528). Diameter approximately 0.078 km. from mean, weighted H=23.2.
2012 BN123	An assessment posting was noted by A/CC on 2 Feb. - References: MPEC 2012-C02

2012 BA102	JPL Sentry	1744 Feb. 1	2093-2112	3	3.9e-06	-6.54	-6.55	0	Analysis based on 15 observations spanning 1.3960 days (2012-Jan-30.21365 to 2012-Jan-31.60961). Diameter approximately 0.017 km. from mean, weighted H=26.5.
2012 BA102	Assessment postings were noted by A/CC on 31 Jan. & 1 Feb. - References: MPEC 2012-B113 plus DOU 2012-C01

2012 BM86	JPL Sentry	1454 Feb. 3	2102	2	8.2e-08	-5.64	-5.66	0	Analysis based on 23 observations spanning 3.7692 days (2012-Jan-29.55767 to 2012-Feb-02.32688). Diameter approximately 0.150 km. from mean, weighted H=21.8.
	NEODyS	1744 Feb. 1	R E M O V E D
	Assessment postings were noted by A/CC on 30 Jan., 31 Jan., 1 Feb., 2 Feb. & 3 Feb. - References: MPEC 2012-B109 plus DOUs 2012-C01, 2012-C12 & 2012-C15

2012 BJ86	NEODyS	1454 Feb. 3	2085-2085	1	2.21e-07	-5.06	-5.06	0	Based on 31 optical observations (of which 0 are rejected as outliers) from 2012-01-29.102 to 2012-02-01.806.
	JPL Sentry	1145 Feb. 2	2085-2108	3	1.1e-06	-4.41	-4.71	0	Analysis based on 31 observations spanning 3.7036 days (2012-Jan-29.10142 to 2012-Feb-01.80504). Diameter approximately 0.154 km. from mean, weighted H=21.7.
	Assessment postings were noted by A/CC on 30 Jan., 31 Jan., 2 Feb. & 3 Feb. - References: MPEC 2012-B106 plus DOUs 2012-B110 & 2012-C12

2012 BA77	NEODyS	1516 Jan. 30	2025-2072	24	1.24e-05	-4.97	-5.36	0	Based on 9 optical observations (of which 0 are rejected as outliers) from 2012-01-24.368 to 2012-01-29.312.
	JPL Sentry	1516 Jan. 30	2015-2103	70	1.7e-05	-4.96	-5.53	0	Analysis based on 9 observations spanning 4.9442 days (2012-Jan-24.36724 to 2012-Jan-29.311453). Diameter approximately 0.022 km. from mean, weighted H=25.9.
	Assessment postings were noted by A/CC on 28 Jan. & 30 Jan. - References: MPEC 2012-B82 plus DOU 2012-B99

2012 BU61	NEODyS	1934 Jan. 31	2069-2090	6	3.19e-06	-3.47	-3.59	0	Based on 29 optical observations (of which 0 are rejected as outliers) from 2012-01-26.095 to 2012-01-31.132.
	JPL Sentry	1934 Jan. 31	2031-2099	17	2.1e-06	-3.59	-3.91	0	Analysis based on 29 observations spanning 5.0370 days (2012-Jan-26.0941 to 2012-Jan-31.13115). Diameter approximately 0.210 km. from mean, weighted H=21.1.
	Assessment postings were noted by A/CC on 27 Jan., 28 Jan., 29 Jan., 30 Jan. & 31 Jan. - References: MPEC 2012-B70 plus DOUs 2012-B98, 2012-B99 & 2012-B110

2012 BL14	NEODyS	1656 Jan. 22	2023-2090	80	1.27e-05	-5.82	-6.13	0	Based on 17 optical observations (of which 0 are rejected as outliers) from 2012-01-21.375 to 2012-01-21.494.
	JPL Sentry	1915 Jan. 21	2023-2111	129	1.4e-05	-5.79	-6.16	0	Analysis based on 17 observations spanning .11881 days (2012-Jan-21.37429 to 2012-Jan-21.4931). Diameter approximately 0.008 km. from mean, weighted H=28.2.
	Assessment postings were noted by A/CC on 21 Jan. & 22 Jan. - References: MPEC 2012-B47

2012 BK14	NEODyS	1355 Jan. 23	2014-2091	150	2.18e-06	-7.03	-7.97	0	Based on 11 optical observations (of which 2 are rejected as outliers) from 2012-01-21.318 to 2012-01-21.466.
	JPL Sentry	2029 Jan. 21	2020-2103	528	4.5e-05	-5.87	-6.91	0	Analysis based on 11 observations spanning .14854 days (2012-Jan-21.317 to 2012-Jan-21.46554). Diameter approximately 0.009 km. from mean, weighted H=28.0.
	Assessment postings were noted by A/CC on 21 Jan. & 23 Jan. - References: MPEC 2012-B46

2012 BW13	NEODyS	1412 Jan. 27	2072-2084	2	4.13e-08	-8.57	-8.84	0	Based on 31 optical observations (of which 1 are rejected as outliers) from 2012-01-19.208 to 2012-01-24.895.
	JPL Sentry	1412 Jan. 27	2072-2111	7	3.5e-06	-6.78	-7.04	0	Analysis based on 31 observations spanning 5.6870 days (2012-Jan-19.20743 to 2012-Jan-24.89438). Diameter approximately 0.012 km. from mean, weighted H=27.2.
	Assessment postings were noted by A/CC on 21 Jan., 22 Jan., 23 Jan., 24 Jan., 25 Jan. & 27 Jan. - References: MPEC 2012-B34 plus DOUs 2012-B48, 2012-B50, 2012-B55, 2012-B59 & 2012-B67

2012 BY1	NEODyS	1325 Jan. 25	2043-2074	8	2.22e-06	-5.69	-5.76	0	Based on 43 optical observations (of which 2 are rejected as outliers) from 2012-01-18.391 to 2012-01-24.109.
	JPL Sentry	1325 Jan. 25	2043-2074	7	4.3e-06	-5.48	-5.72	0	Analysis based on 43 observations spanning 5.7181 days (2012-Jan-18.39002 to 2012-Jan-24.108101). Diameter approximately 0.024 km. from mean, weighted H=25.8.
	Assessment postings were noted by A/CC on 20 Jan., 21 Jan., 22 Jan., 24 Jan. & 25 Jan. - References: MPEC 2012-B18 plus DOUs 2012-B32, 2012-B48, 2012-B55 & 2012-B59

2012 BU1	NEODyS	1412 Jan. 27	2068-2090	7	5.19e-06	-6.84	-6.86	0	Based on 31 optical observations (of which 1 are rejected as outliers) from 2012-01-18.322 to 2012-01-25.434.
	JPL Sentry	1412 Jan. 27	2071-2112	23	1.3e-04	-5.53	-6.04	0	Analysis based on 31 observations spanning 7.1126 days (2012-Jan-18.32077 to 2012-Jan-25.43338). Diameter approximately 0.010 km. from mean, weighted H=27.7.
	Assessment postings were noted by A/CC on 19 Jan., 20 Jan., 21 Jan., 22 Jan. & 27 Jan. - References: MPEC 2012-B15 plus DOUs 2012-B32, 2012-B48 & 2012-B67

2012 AP10	NEODyS	1610 Jan. 21	2064-2089	50	7.64e-05	-5.12	-5.71	0	Based on 63 optical observations (of which 2 are rejected as outliers) from 2012-01-11.084 to 2012-01-20.209.
	JPL Sentry	1517 Jan. 20	2069-2111	72	9.5e-05	-5.09	-5.81	0	Analysis based on 63 observations spanning 9.1249 days (2012-Jan-11.08359 to 2012-Jan-20.20847). Diameter approximately 0.018 km. from mean, weighted H=26.4.
	Assessment postings were noted by A/CC on 11 Jan., 12 Jan., 13 Jan., 14 Jan., 15 Jan., 16 Jan., 17 Jan., 18 Jan., 19 Jan., 20 Jan. & 21 Jan. - References: MPEC 2012-A48 plus DOUs 2012-A51, 2012-A55, 2012-A59, 2012-B01, 2012-B02, 2012-B06, 2012-B07 & 2012-B22

2011 YC63	NEODyS	1716 Jan. 3	2047-2079	2	3.18e-08	-9.08	-9.09	0	Based on 14 optical observations (of which 0 are rejected as outliers) from 2011-12-31.388 to 2012-01-01.325.
	JPL Sentry	0313 Jan. 3	2034-2047	2	1.4e-07	-8.25	-8.34	0	Analysis based on 14 observations spanning .93688 days (2011-Dec-31.38732 to 2012-Jan-01.3242). Diameter approximately 0.005 km. from mean, weighted H=29.0.
	Assessment postings were noted by A/CC on 3 Jan. - References: MPEC 2012-A14

2011 YV62	NEODyS	1325 Jan. 25	2074-2080	3	6.52e-08	-5.20	-5.22	0	Based on 44 optical observations (of which 0 are rejected as outliers) from 2011-12-30.233 to 2012-01-20.334.
	JPL Sentry	1325 Jan. 25	2078-2087	4	7.1e-08	-5.17	-5.20	0	Analysis based on 44 observations spanning 21.100 days (2011-Dec-30.23271 to 2012-Jan-20.332898). Diameter approximately 0.210 km. from mean, weighted H=21.0.
	Assessment postings were noted by A/CC on 3 Jan., 15 Jan., 21 Jan. & 25 Jan. - References: MPEC 2012-A07 plus DOUs 2012-A16, 2012-A59, 2012-B32 & 2012-B59

2011 YW10	NEODyS	1716 Jan. 3	2025-2070	5	2.94e-08	-6.58	-6.65	0	Based on 36 optical observations (of which 1 are rejected as outliers) from 2011-12-25.216 to 2012-01-03.177.
	JPL Sentry	1716 Jan. 3	2025-2042	2	4.6e-09	-7.24	-7.26	0	Analysis based on 38 observations spanning 8.9612 days (2011-Dec-25.21483 to 2012-Jan-03.17604). Diameter approximately 0.054 km. from mean, weighted H=24.0.
	Assessment postings were noted by A/CC on 3 Jan. - References: DOU 2012-A16

2011 XC2	JPL Sentry	2300 Jan. 8	2056	1	4.9e-06	-4.03	-4.03	0	Analysis based on 33 observations spanning 22.188 days (2011-Dec-08.19806 to 2011-Dec-30.386484). Diameter approximately 0.086 km. from mean, weighted H=23.0.
	NEODyS	1700 Jan. 8	2056-2084	3	5.71e-06	-3.96	-3.96	0	Based on 32 optical observations (of which 0 are rejected as outliers) from 2011-12-08.199 to 2011-12-30.387.
	Assessment postings were noted by A/CC on 3 Jan. & 8 Jan. - References: DOU 2012-A39

2011 WL2	JPL Sentry	1516 Jan. 30	2098	1	1.0e-06	-4.19	-4.19	0	Analysis based on 209 observations spanning 73.800 days (2011-Nov-16.31883 to 2012-Jan-29.11929). Diameter approximately 0.240 km. from mean, weighted H=20.7.
	NEODyS	1610 Jan. 21	R E M O V E D
	Assessment postings were noted by A/CC on 3 Jan., 5 Jan., 18 Jan., 19 Jan., 21 Jan., 29 Jan. & 30 Jan. - References: DOUs 2012-A16, 2012-A29, 2012-B06, 2012-B07, 2012-B32, 2012-B98 & 2012-B99

2011 UE305	JPL Sentry	1716 Jan. 3	2109	1	2.6e-09	-6.96	-6.96	0	Analysis based on 74 observations spanning 63.933 days (2011-Oct-30.46441 to 2012-Jan-02.39779). Diameter approximately 0.190 km. from mean, weighted H=21.3.
2011 UE305	An assessment posting was noted by A/CC on 3 Jan. - References: DOU 2012-A16
C L E A R E D
2012 BL86	JPL Sentry	1454 Feb. 3	R E M O V E D						Risk listing removed at 0850 UTC 3 Feb.
2012 BL86	Assessment postings were noted by A/CC on 30 Jan. & 3 Feb. - References: MPEC 2012-B108 plus DOU 2012-C15

2012 BC77	NEODyS	1421 Jan. 29	R E M O V E D
	JPL Sentry	1421 Jan. 29	R E M O V E D						Risk listing removed at 0851 UTC 29 Jan.
	Assessment postings were noted by A/CC on 28 Jan. & 29 Jan. - References: MPEC 2012-B84 plus DOUs 2012-B98, 2012-B99, 2012-C12 & 2012-C15

2012 BF27	JPL Sentry	1421 Jan. 29	R E M O V E D						Risk listing removed at 0852 UTC 29 Jan.
2012 BF27	Assessment postings were noted by A/CC on 24 Jan. & 29 Jan. - References: MPEC 2012-B58 plus DOUs 2012-B98 & 2012-B99

2012 BJ14	JPL Sentry	1206 Jan. 28	R E M O V E D						Risk listing removed at 0853 UTC 28 Jan.
	NEODyS	1412 Jan. 27	R E M O V E D
	Assessment postings were noted by A/CC on 21 Jan., 22 Jan., 25 Jan., 27 Jan. & 28 Jan. - References: MPEC 2012-B45 plus DOUs 2012-B59, 2012-B67 & 2012-B79

2012 BB14	JPL Sentry	1355 Jan. 23	R E M O V E D						Risk listing removed at 0852 UTC 23 Jan.
2012 BB14	Assessment postings were noted by A/CC on 21 Jan. & 23 Jan. - References: MPEC 2012-B38 plus DOUs 2012-B50, 2012-B99 & 2012-C12

2012 BO11	NEODyS	1454 Feb. 3	R E M O V E D
	JPL Sentry	1934 Jan. 31	R E M O V E D						Risk listing removed at 0853 UTC 31 Jan.
	Assessment postings were noted by A/CC on 21 Jan., 22 Jan., 23 Jan., 27 Jan., 28 Jan., 29 Jan., 30 Jan., 31 Jan. & 3 Feb. - References: MPEC 2012-B31 plus DOUs 2012-B48, 2012-B50, 2012-B67, 2012-B79, 2012-B98, 2012-B99, 2012-B110 & 2012-C15

2012 BN11	NEODyS	1656 Jan. 22	R E M O V E D
	JPL Sentry	1656 Jan. 22	R E M O V E D						Risk listing removed at 0852 UTC 22 Jan.
	Assessment postings were noted by A/CC on 20 Jan., 21 Jan. & 22 Jan. - References: MPEC 2012-B30 plus DOUs 2012-B48, 2012-B50, 2012-B67, 2012-B79, 2012-B98, 2012-B99, 2012-B110, 2012-C01, 2012-C12 & 2012-C15

2012 BK11	NEODyS	1656 Jan. 22	R E M O V E D
	JPL Sentry	1656 Jan. 22	R E M O V E D						Risk listing removed at 0849 UTC 22 Jan.
	Assessment postings were noted by A/CC on 20 Jan., 21 Jan. & 22 Jan. - References: MPEC 2012-B27 plus DOUs 2012-B48, 2012-B99, 2012-B110, 2012-C12 & 2012-C15

2012 AS10	JPL Sentry	1602 Jan. 16	R E M O V E D						Risk listing removed at 0852 UTC 16 Jan.
2012 AS10	Assessment postings were noted by A/CC on 14 Jan. & 16 Jan. - References: MPEC 2012-A54 plus DOUs 2012-B01 & 2012-B55

2011 YH28	JPL Sentry	1602 Jan. 16	R E M O V E D						Risk listing removed at 0849 UTC 16 Jan.
	NEODyS	1735 Jan. 7	R E M O V E D
	Assessment postings were noted by A/CC on 3 Jan., 4 Jan., 5 Jan., 6 Jan., 7 Jan., 8 Jan. & 16 Jan. - References: DOUs 2012-A16, 2012-A25, 2012-A29, 2012-A36, 2012-A38, 2012-B01, 2012-B07, 2012-B67, 2012-B98 & 2012-C15

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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