A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During March 2011

Compiled at 2052 UTC on 1 April 2011

<< February 2011 CRT | CRT Archive Index | April 2011 CRT >>

[ Today's risk monitoring & other observing news | object risks cleared in March | 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
2011 FA23JPL Sentry1507 March 312025-210263.5e-06-7.28-7.420Analysis based on 21 observations spanning 1.1846 days (2011-Mar-30.24897 to 2011-Mar-31.43355). Diameter approximately 0.006 km. from mean, weighted H=28.9.
An assessment posting was noted by A/CC on 31 March   -   References: MPEC 2011-F57
2011 FQ16JPL Sentry1903 March 292066-211153.1e-07-8.18-8.490Analysis based on 16 observations spanning 1.0252 days (2011-Mar-28.31043 to 2011-Mar-29.33567). Diameter approximately 0.010 km. from mean, weighted H=27.7.
An assessment posting was noted by A/CC on 29 March   -   References: MPEC 2011-F46
2011 FQ6NEODyS1507 March 312049-2090413.84e-05-5.87-5.930Based on 24 optical observations (of which 0 are rejected as outliers) from 2011-03-27.262 to 2011-03-30.362.
JPL Sentry1507 March 312053-2103283.6e-05-5.90-5.980Analysis based on 24 observations spanning 3.1004 days (2011-Mar-27.26132 to 2011-Mar-30.36173). Diameter approximately 0.010 km. from mean, weighted H=27.7.
Assessment postings were noted by A/CC on 28 March, 30 March & 31 March   -   References: MPEC 2011-F34 plus DOUs 2011-F49 & 2011-F55
2011 EB74NEODyS1711 March 162033-20902432.75e-04-4.60-5.530Based on 17 optical observations (of which 0 are rejected as outliers) from 2011-03-15.404 to 2011-03-15.503.
JPL Sentry1426 March 152032-20771872.9e-04-4.58-5.510Analysis based on 17 observations spanning .09906 days (2011-Mar-15.40337 to 2011-Mar-15.50243). Diameter approximately 0.014 km. from mean, weighted H=26.9.
Assessment postings were noted by A/CC on 15 March & 16 March   -   References: MPEC 2011-E86
2011 EV73JPL Sentry0021 March 15210811.8e-10-11.85-11.90Analysis based on 9 observations spanning 1.0891 days (2011-Mar-13.39452 to 2011-Mar-14.48358). Diameter approximately 0.007 km. from mean, weighted H=28.4.
An assessment posting was noted by A/CC on 15 March   -   References: MPEC 2011-E83
2011 EM40JPL Sentry1330 March 152060-2110161.0e-06-7.62-8.340Analysis based on 25 observations spanning 3.9087 days (2011-Mar-10.37855 to 2011-Mar-14.28722). Diameter approximately 0.009 km. from mean, weighted H=28.0.
NEODyS1330 March 152054-2089155.28e-07-7.75-8.090Based on 25 optical observations (of which 0 are rejected as outliers) from 2011-03-10.379 to 2011-03-14.288.
Assessment postings were noted by A/CC on 10 March, 11 March, 13 March, 14 March & 15 March   -   References: MPEC 2011-E56 plus DOUs 2011-E74, 2011-E80 & 2011-E85
2011 EL40JPL Sentry1330 March 15207311.2e-07-7.56-7.560Analysis based on 30 observations spanning 4.1374 days (2011-Mar-10.24148 to 2011-Mar-14.37887). Diameter approximately 0.017 km. from mean, weighted H=26.5.
NEODyS1330 March 15R E M O V E D
Assessment postings were noted by A/CC on 10 March, 11 March & 15 March   -   References: MPEC 2011-E55 plus DOU 2011-E85
2011 EU29NEODyS1603 March 302110-211017.0e-06-2.76-2.760Based on 88 optical observations (of which 0 are rejected as outliers) from 2011-03-08.201 to 2011-03-29.205.
JPL Sentry1600 March 30211016.7e-06-2.78-2.780Analysis based on 88 observations spanning 21.003 days (2011-Mar-08.20041 to 2011-Mar-29.20384). Diameter approximately 0.370 km. from mean, weighted H=19.8.
Assessment postings were noted by A/CC on 10 March, 11 March, 13 March, 14 March, 23 March, 26 March, 27 March, 28 March, 29 March & 30 March   -   References: MPEC 2011-E49 plus DOUs 2011-E53, 2011-E61, 2011-E74, 2011-E80, 2011-F19, 2011-F24, 2011-F31, 2011-F37, 2011-F45 & 2011-F49
2011 ES4NEODyS1726 March 62031-2090552.19e-05-5.11-5.560Based on 45 optical observations (of which 0 are rejected as outliers) from 2011-03-02.199 to 2011-03-06.236.
JPL Sentry1726 March 62031-2109472.7e-05-5.06-5.530Analysis based on 45 observations spanning 4.0365 days (2011-Mar-02.19847 to 2011-Mar-06.23495). Diameter approximately 0.025 km. from mean, weighted H=25.7.
Assessment postings were noted by A/CC on 3 March, 5 March & 6 March   -   References: MPEC 2011-E13 plus DOUs 2011-E28 & 2011-E34
2011 EBNEODyS1625 March 112070-207732.81e-05-5.63-5.720Based on 39 optical observations (of which 0 are rejected as outliers) from 2011-03-01.381 to 2011-03-10.437.
JPL Sentry1625 March 112070-207732.9e-05-5.62-5.700Analysis based on 39 observations spanning 9.0560 days (2011-Mar-01.38036 to 2011-Mar-10.43633). Diameter approximately 0.014 km. from mean, weighted H=26.9.
Assessment postings were noted by A/CC on 2 March, 4 March, 5 March, 6 March, 7 March & 11 March   -   References: MPEC 2011-E04 plus DOUs 2011-E21, 2011-E28, 2011-E34, 2011-E42 & 2011-E61
2011 DV10JPL Sentry1625 March 11209311.7e-06-5.74-5.740Analysis based on 27 observations spanning 12.048 days (2011-Feb-26.30148 to 2011-Mar-10.34995). Diameter approximately 0.038 km. from mean, weighted H=24.8.
Assessment postings were noted by A/CC on 1 March, 2 March, 3 March, 4 March & 11 March   -   References: MPEC 2011-E02 plus DOUs 2011-E06, 2011-E17, 2011-E21 & 2011-E61
2011 DU9NEODyS1711 March 132043-205441.94e-04-4.46-4.470Based on 64 optical observations (of which 0 are rejected as outliers) from 2011-02-27.018 to 2011-03-11.392.
JPL Sentry1711 March 132043-205951.9e-04-4.46-4.470Analysis based on 64 observations spanning 12.375 days (2011-Feb-27.01686 to 2011-Mar-11.391399). Diameter approximately 0.016 km. from mean, weighted H=26.7.
Assessment postings were noted by A/CC on 1 March, 2 March, 3 March, 5 March, 6 March, 7 March, 11 March & 13 March   -   References: DOUs 2011-E01, 2011-E06, 2011-E17, 2011-E28, 2011-E34, 2011-E42, 2011-E61 & 2011-E74
2011 DSNEODyS1625 March 112065-2084121.29e-05-6.15-6.340Based on 74 optical observations (of which 0 are rejected as outliers) from 2011-02-23.400 to 2011-03-10.367.
JPL Sentry1625 March 112074-2108171.6e-05-6.09-6.340Analysis based on 74 observations spanning 14.967 days (2011-Feb-23.39905 to 2011-Mar-10.3663). Diameter approximately 0.013 km. from mean, weighted H=27.0.
Assessment postings were noted by A/CC on 1 March, 2 March, 3 March, 4 March, 5 March, 6 March, 7 March & 11 March   -   References: DOUs 2011-E01, 2011-E06, 2011-E17, 2011-E21, 2011-E28, 2011-E34, 2011-E42 & 2011-E61
2011 BP40NEODyS1833 March 52016-2087185.09e-07-5.65-5.660Based on 9 optical observations (of which 0 are rejected as outliers) from 2011-01-30.404 to 2011-02-02.480.
JPL Sentry1833 March 52016-2109414.3e-07-6.17-6.280Analysis based on 9 observations spanning 3.0757 days (2011-Jan-30.40349 to 2011-Feb-02.479228). Diameter approximately 0.029 km. from mean, weighted H=25.4.
Assessment postings were noted by A/CC on 5 March   -   References: DOU 2011-E28
2011 BT15NEODyS1726 March 62062-2090272.53e-05-3.34-3.520Based on 70 optical observations (of which 3 are rejected as outliers) from 2011-01-24.290 to 2011-03-06.207.
JPL Sentry1726 March 62037-2110887.6e-05-2.90-3.340Analysis based on 69 observations spanning 40.917 days (2011-Jan-24.28933 to 2011-Mar-06.20673). Diameter approximately 0.150 km. from mean, weighted H=21.7.
Assessment postings were noted by A/CC on 1 March, 2 March, 3 March, 4 March & 6 March   -   References: DOUs 2011-E01, 2011-E06, 2011-E17, 2011-E21 & 2011-E34
2010 RF12JPL Sentry1723 March 42095-2110315.2e-02-3.33-3.330Analysis based on 322 observations spanning 3.1100 days (2010-Sep-05.40477 to 2010-Sep-08.514787). Diameter approximately 0.007 km. from mean, weighted H=28.4.
NEODyS1723 March 42095-210084.82e-02-3.36-3.360Based on 324 optical observations (of which 3 are rejected as outliers) from 2010-09-05.406 to 2010-09-08.516.
Assessment postings were noted by A/CC on 4 March   -   References: DOU 2011-E21
2010 EN44NEODyS1503 March 242027-202716.8e-10-7.41-7.410Based on 11 optical observations (of which 0 are rejected as outliers) from 2010-03-11.868 to 2010-03-12.596.
JPL Sentry1617 March 232015-2110262.0e-07-5.84-5.970Analysis based on 11 observations spanning .72799 days (2010-Mar-11.86749 to 2010-Mar-12.59548). Diameter approximately 0.018 km. from mean, weighted H=26.7.
Assessment postings were noted by A/CC on 23 March & 24 March   -   References: DOU 2011-F19
2010 DG77NEODyS1503 March 242042-2090343.16e-06-5.66-6.360Based on 10 optical observations (of which 0 are rejected as outliers) from 2010-02-19.176 to 2010-02-19.772.
JPL Sentry0218 March 242023-21111371.4e-06-5.55-6.250Analysis based on 10 observations spanning .59543 days (2010-Feb-19.17573 to 2010-Feb-19.77116). Diameter approximately 0.045 km. from mean, weighted H=24.5.
Assessment postings were noted by A/CC on 23 March & 24 March   -   References: DOU 2011-F19
2008 EM68JPL Sentry0412 March 122011-21109681.5e-05-5.28-5.750Analysis based on 12 observations spanning .11019 days (2008-Mar-08.25164 to 2008-Mar-08.36183). Diameter approximately 0.010 km. from mean, weighted H=27.7.
An assessment posting was noted by A/CC on 12 March   -   References: no recent MPECs
2008 EF32JPL Sentry0220 March 112022-208336.8e-08-9.09-9.330Analysis based on 8 observations spanning .12271 days (2008-Mar-11.35979 to 2008-Mar-11.4825). Diameter approximately 0.004 km. from mean, weighted H=29.4.
An assessment posting was noted by A/CC on 11 March   -   References: no recent MPECs
2004 FU162JPL Sentry0404 April 12011-21107875.6e-05-4.73-5.050Analysis based on 4 observations spanning .03055 days (2004-Mar-31.27744 to 2004-Mar-31.30799). Diameter approximately 0.006 km. from mean, weighted H=29.0.
An assessment posting was noted by A/CC on 1 April   -   References: no recent MPECs
C   L   E   A   R   E   D
2011 FY22NEODyS1640 April 1R E M O V E D
JPL Sentry1640 April 1R E M O V E DRisk listing removed at 1048 UTC 1 April
Assessment postings were noted by A/CC on 31 March & 1 April   -   References: MPEC 2011-F54 plus DOU 2011-G01
2011 ET74JPL Sentry1534 March 25R E M O V E DRisk listing removed at 1058 UTC 25 March
Assessment postings were noted by A/CC on 15 March & 25 March   -   References: MPEC 2011-E89 plus DOUs 2011-F22, 2011-F24 & 2011-F31
2011 EM51JPL Sentry1330 March 14R E M O V E DRisk listing removed at 1149 UTC 14 March
Assessment postings were noted by A/CC on 13 March & 14 March   -   References: MPEC 2011-E76 plus DOUs 2011-E80, 2011-E85, 2011-F04, 2011-F05, 2011-F22, 2011-F24, 2011-F37, 2011-F45, 2011-F49 & 2011-F55
2011 EC41NEODyS1704 March 18R E M O V E D
JPL Sentry1704 March 18R E M O V E DRisk listing removed at 1054 UTC 18 March
Assessment postings were noted by A/CC on 12 March, 13 March, 14 March & 18 March   -   References: MPEC 2011-E64 plus DOUs 2011-E68, 2011-E74, 2011-E80, 2011-F04, 2011-F22 & 2011-F24
2011 EO40JPL Sentry1640 March 12R E M O V E DRisk listing removed at 1151 UTC 12 March
NEODyS1640 March 12R E M O V E D
Assessment postings were noted by A/CC on 11 March & 12 March   -   References: MPEC 2011-E59 plus DOUs 2011-E68 & 2011-F22
2011 EK40JPL Sentry1330 March 15R E M O V E DRisk listing removed at 1140 UTC 15 March
NEODyS1330 March 15R E M O V E D
Assessment postings were noted by A/CC on 10 March, 11 March & 15 March   -   References: MPEC 2011-E54 plus DOU 2011-E85
2011 EF17NEODyS1552 March 26R E M O V E D
JPL Sentry1552 March 26R E M O V E DRisk listing removed at 1051 UTC 26 March
Assessment postings were noted by A/CC on 7 March, 11 March, 14 March & 26 March   -   References: MPEC 2011-E39 plus DOUs 2011-E61, 2011-E80 & 2011-F24
2011 EL11NEODyS1503 March 24R E M O V E D
JPL Sentry1503 March 24R E M O V E DRisk listing removed at 1052 UTC 24 March
Assessment postings were noted by A/CC on 5 March, 6 March, 11 March, 12 March, 14 March & 24 March   -   References: MPEC 2011-E24 plus DOUs 2011-E34, 2011-E61, 2011-E68, 2011-E80 & 2011-F20
2011 EC7JPL Sentry1706 March 10R E M O V E DRisk listing removed at 1253 UTC 10 March
NEODyS1752 March 7R E M O V E D
Assessment postings were noted by A/CC on 5 March, 7 March & 10 March   -   References: MPEC 2011-E23 plus DOUs 2011-E42, 2011-E53, 2011-E61 & 2011-F24
2011 EW4NEODyS1706 March 10R E M O V E D
JPL Sentry1706 March 10R E M O V E DRisk listing removed at 1329 UTC 10 March
Assessment postings were noted by A/CC on 3 March, 4 March, 5 March, 6 March & 10 March   -   References: MPEC 2011-E16 plus DOUs 2011-E21, 2011-E28, 2011-E34, 2011-E53, 2011-E61 & 2011-F31
2011 EJJPL Sentry1811 March 3R E M O V E DRisk listing removed at 1137 UTC 3 March
Assessment postings were noted by A/CC on 2 March & 3 March   -   References: MPEC 2011-E08 plus DOUs 2011-E17, 2011-E21 & 2011-E68
2011 EHJPL Sentry1723 March 4R E M O V E DRisk listing removed at 1246 UTC 4 March
Assessment postings were noted by A/CC on 2 March & 4 March   -   References: MPEC 2011-E07 plus DOU 2011-E21
2011 ECJPL Sentry1723 March 4R E M O V E DRisk listing removed at 1451 UTC 4 March
Assessment postings were noted by A/CC on 2 March & 4 March   -   References: MPEC 2011-E05 plus DOUs 2011-E21, 2011-E28, 2011-F31 & 2011-F37
2011 DS9NEODyS1652 March 9R E M O V E D
JPL Sentry1752 March 7R E M O V E DRisk listing removed at 1238 UTC 7 March
Assessment postings were noted by A/CC on 1 March, 2 March, 3 March, 4 March, 5 March, 6 March, 7 March & 9 March   -   References: DOUs 2011-E01, 2011-E06, 2011-E17, 2011-E21, 2011-E28, 2011-E34, 2011-E42, 2011-E47, 2011-E53, 2011-E74, 2011-E85, 2011-F04, 2011-F20, 2011-F22, 2011-F31, 2011-F37, 2011-F45 & 2011-G01
2011 DE5JPL Sentry1637 March 2R E M O V E DRisk listing removed at 1318 UTC 2 March
NEODyS1757 March 1R E M O V E D
Assessment postings were noted by A/CC on 1 March & 2 March   -   References: DOUs 2011-E01 & 2011-E06
2011 DVJPL Sentry1621 March 29R E M O V E DRisk listing removed at 1053 UTC 29 March
NEODyS1704 March 18R E M O V E D
Assessment postings were noted by A/CC on 2 March, 3 March, 5 March, 7 March, 8 March, 9 March, 10 March, 12 March, 13 March, 15 March, 16 March, 18 March, 25 March, 26 March, 27 March, 28 March & 29 March   -   References: DOUs 2011-E06, 2011-E17, 2011-E28, 2011-E42, 2011-E44, 2011-E47, 2011-E53, 2011-E68, 2011-E74, 2011-E85, 2011-F01, 2011-F04, 2011-F22, 2011-F24, 2011-F31, 2011-F37, 2011-F45 & 2011-F49
2011 BM45NEODyS1706 March 10R E M O V E D
JPL Sentry1706 March 10R E M O V E DRisk listing removed at 1247 UTC 10 March
Assessment postings were noted by A/CC on 10 March   -   References: DOU 2011-E53
2010 DJ77NEODyS1617 March 23R E M O V E D
JPL Sentry1617 March 23R E M O V E DRisk listing removed at 1135 UTC 23 March
Assessment postings were noted by A/CC on 23 March   -   References: DOU 2011-F19

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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