A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During January 2012

Compiled at 2359 UTC on 31 January 2012

<< December 2011 CRT | CRT Archive Index | February 2012 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.

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 BA102JPL Sentry2130 Jan. 312093-211232.4e-06-6.77-6.870Analysis based on 11 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.
An assessment posting was noted by A/CC on 31 Jan.   -   References: MPEC 2012-B113
2012 BM86NEODyS1934 Jan. 312042-208342.3e-09-6.87-7.290Based on 12 optical observations (of which 0 are rejected as outliers) from 2012-01-29.558 to 2012-01-30.458.
JPL Sentry2125 Jan. 302026-2108651.2e-07-5.41-6.290Analysis based on 12 observations spanning .89972 days (2012-Jan-29.55767 to 2012-Jan-30.457389). Diameter approximately 0.142 km. from mean, weighted H=21.9.
Assessment postings were noted by A/CC on 30 Jan. & 31 Jan.   -   References: MPEC 2012-B109
2012 BL86JPL Sentry2125 Jan. 302057-206122.2e-06-5.22-5.400Analysis based on 30 observations spanning .91281 days (2012-Jan-29.34034 to 2012-Jan-30.25315). Diameter approximately 0.055 km. from mean, weighted H=24.0.
An assessment posting was noted by A/CC on 30 Jan.   -   References: MPEC 2012-B108
2012 BJ86NEODyS1934 Jan. 312085-209031.74e-07-5.17-5.180Based on 28 optical observations (of which 0 are rejected as outliers) from 2012-01-29.102 to 2012-01-30.851.
JPL Sentry1934 Jan. 312085-2108101.2e-06-4.40-4.800Analysis based on 28 observations spanning 1.7489 days (2012-Jan-29.10142 to 2012-Jan-30.8503). Diameter approximately 0.150 km. from mean, weighted H=21.7.
Assessment postings were noted by A/CC on 30 Jan. & 31 Jan.   -   References: MPEC 2012-B106 plus DOU 2012-B110
2012 BA77NEODyS1516 Jan. 302025-2072241.24e-05-4.97-5.360Based on 9 optical observations (of which 0 are rejected as outliers) from 2012-01-24.368 to 2012-01-29.312.
JPL Sentry1516 Jan. 302015-2103701.7e-05-4.96-5.530Analysis 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 BU61NEODyS1934 Jan. 312069-209063.19e-06-3.47-3.590Based on 29 optical observations (of which 0 are rejected as outliers) from 2012-01-26.095 to 2012-01-31.132.
JPL Sentry1934 Jan. 312031-2099172.1e-06-3.59-3.910Analysis 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 BL14NEODyS1656 Jan. 222023-2090801.27e-05-5.82-6.130Based on 17 optical observations (of which 0 are rejected as outliers) from 2012-01-21.375 to 2012-01-21.494.
JPL Sentry1915 Jan. 212023-21111291.4e-05-5.79-6.160Analysis 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 BK14NEODyS1355 Jan. 232014-20911502.18e-06-7.03-7.970Based on 11 optical observations (of which 2 are rejected as outliers) from 2012-01-21.318 to 2012-01-21.466.
JPL Sentry2029 Jan. 212020-21035284.5e-05-5.87-6.910Analysis 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 BW13NEODyS1412 Jan. 272072-208424.13e-08-8.57-8.840Based on 31 optical observations (of which 1 are rejected as outliers) from 2012-01-19.208 to 2012-01-24.895.
JPL Sentry1412 Jan. 272072-211173.5e-06-6.78-7.040Analysis 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 BO11NEODyS1934 Jan. 312076-207616.0e-09-8.82-8.820Based on 46 optical observations (of which 1 are rejected as outliers) from 2012-01-19.493 to 2012-01-30.287.
JPL Sentry1934 Jan. 31R E M O V E DRisk 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.   -   References: MPEC 2012-B31 plus DOUs 2012-B48, 2012-B50, 2012-B67, 2012-B79, 2012-B98, 2012-B99 & 2012-B110
2012 BY1NEODyS1325 Jan. 252043-207482.22e-06-5.69-5.760Based on 43 optical observations (of which 2 are rejected as outliers) from 2012-01-18.391 to 2012-01-24.109.
JPL Sentry1325 Jan. 252043-207474.3e-06-5.48-5.720Analysis 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 BU1NEODyS1412 Jan. 272068-209075.19e-06-6.84-6.860Based on 31 optical observations (of which 1 are rejected as outliers) from 2012-01-18.322 to 2012-01-25.434.
JPL Sentry1412 Jan. 272071-2112231.3e-04-5.53-6.040Analysis 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 AP10NEODyS1610 Jan. 212064-2089507.64e-05-5.12-5.710Based on 63 optical observations (of which 2 are rejected as outliers) from 2012-01-11.084 to 2012-01-20.209.
JPL Sentry1517 Jan. 202069-2111729.5e-05-5.09-5.810Analysis 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 YC63NEODyS1716 Jan. 32047-207923.18e-08-9.08-9.090Based on 14 optical observations (of which 0 are rejected as outliers) from 2011-12-31.388 to 2012-01-01.325.
JPL Sentry0313 Jan. 32034-204721.4e-07-8.25-8.340Analysis 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 YV62NEODyS1325 Jan. 252074-208036.52e-08-5.20-5.220Based on 44 optical observations (of which 0 are rejected as outliers) from 2011-12-30.233 to 2012-01-20.334.
JPL Sentry1325 Jan. 252078-208747.1e-08-5.17-5.200Analysis 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 YC40NEODyS1620 Jan. 12028-2050114.85e-06-7.15-7.210Based on 13 optical observations (of which 0 are rejected as outliers) from 2011-12-29.272 to 2011-12-30.322.
An assessment posting was noted by A/CC on 1 Jan.   -   References: none
2011 YW10NEODyS1716 Jan. 32025-207052.94e-08-6.58-6.650Based on 36 optical observations (of which 1 are rejected as outliers) from 2011-12-25.216 to 2012-01-03.177.
JPL Sentry1716 Jan. 32025-204224.6e-09-7.24-7.260Analysis 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 1 Jan., 2 Jan. & 3 Jan.   -   References: DOUs 2012-A01, 2012-A03 & 2012-A16
2011 XC2JPL Sentry2300 Jan. 8205614.9e-06-4.03-4.030Analysis 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.
NEODyS1700 Jan. 82056-208435.71e-06-3.96-3.960Based 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 2 Jan., 3 Jan. & 8 Jan.   -   References: DOU 2012-A39
2011 WL2JPL Sentry1516 Jan. 30209811.0e-06-4.19-4.190Analysis 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.
NEODyS1610 Jan. 21R E M O V E D
Assessment postings were noted by A/CC on 1 Jan., 2 Jan., 3 Jan., 5 Jan., 18 Jan., 19 Jan., 21 Jan., 29 Jan. & 30 Jan.   -   References: DOUs 2012-A01, 2012-A03, 2012-A16, 2012-A29, 2012-B06, 2012-B07, 2012-B32, 2012-B98 & 2012-B99
2011 UE305JPL Sentry1716 Jan. 3210912.6e-09-6.96-6.960Analysis 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.
Assessment postings were noted by A/CC on 2 Jan. & 3 Jan.   -   References: DOU 2012-A16
C   L   E   A   R   E   D
2012 BC77NEODyS1421 Jan. 29R E M O V E D
JPL Sentry1421 Jan. 29R E M O V E DRisk 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 BF27JPL Sentry1421 Jan. 29R E M O V E DRisk listing removed at 0852 UTC 29 Jan.
Assessment postings were noted by A/CC on 24 Jan. & 29 Jan.   -   References: MPEC 2012-B58 plus DOUs 2012-B98 & 2012-B99
2012 BJ14JPL Sentry1206 Jan. 28R E M O V E DRisk listing removed at 0853 UTC 28 Jan.
NEODyS1412 Jan. 27R 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 BB14JPL Sentry1355 Jan. 23R E M O V E DRisk listing removed at 0852 UTC 23 Jan.
Assessment postings were noted by A/CC on 21 Jan. & 23 Jan.   -   References: MPEC 2012-B38 plus DOUs 2012-B50 & 2012-B99
2012 BN11NEODyS1656 Jan. 22R E M O V E D
JPL Sentry1656 Jan. 22R E M O V E DRisk 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 BK11NEODyS1656 Jan. 22R E M O V E D
JPL Sentry1656 Jan. 22R E M O V E DRisk 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 AS10JPL Sentry1602 Jan. 16R E M O V E DRisk listing removed at 0852 UTC 16 Jan.
Assessment postings were noted by A/CC on 14 Jan. & 16 Jan.   -   References: MPEC 2012-A54 plus DOUs 2012-B01 & 2012-B55
2011 YJ28JPL Sentry1801 Jan. 1R E M O V E DRisk listing removed at 1652 UTC 1 Jan.
An assessment posting was noted by A/CC on 1 Jan.   -   References: DOUs 2012-A01, 2012-A03, 2012-A16, 2012-A25, 2012-A36, 2012-A38, 2012-A42, 2012-A44, 2012-A59, 2012-B07, 2012-B50 & 2012-B110
2011 YH28JPL Sentry1602 Jan. 16R E M O V E DRisk listing removed at 0849 UTC 16 Jan.
NEODyS1735 Jan. 7R E M O V E D
Assessment postings were noted by A/CC on 2 Jan., 3 Jan., 4 Jan., 5 Jan., 6 Jan., 7 Jan., 8 Jan. & 16 Jan.   -   References: DOUs 2012-A03, 2012-A16, 2012-A25, 2012-A29, 2012-A36, 2012-A38, 2012-B01, 2012-B07, 2012-B67 & 2012-B98

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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