A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During November 2011

Compiled at 2359 UTC on November 2011

<< October 2011 CRT | CRT Archive Index | December 2011 CRT >>

[ Today's risk monitoring & other observing news | object risks cleared in November | 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
2011 WN69NEODyS1640 Nov. 302064-206821.88e-09-8.94-9.030Based on 32 optical observations (of which 0 are rejected as outliers) from 2011-11-28.292 to 2011-11-30.023.
JPL Sentry1640 Nov. 302038-210961.9e-06-6.26-6.490Analysis based on 32 observations spanning 1.7314 days (2011-Nov-28.29095 to 2011-Nov-30.02234). Diameter approximately 0.020 km. from mean, weighted H=26.2.
Assessment postings were noted by A/CC on 29 Nov. & 30 Nov.   -   References: MPEC 2011-W78 plus DOU 2011-W83
2011 WO41NEODyS1553 Nov. 292023-2075126.69e-09-3.47-3.810Based on 27 optical observations (of which 0 are rejected as outliers) from 2011-11-23.482 to 2011-11-28.520.
JPL Sentry1553 Nov. 29202311.2e-09-4.03-4.030Analysis based on 27 observations spanning 5.0385 days (2011-Nov-23.48092 to 2011-Nov-28.51941). Diameter approximately 1.600 km. from mean, weighted H=16.6.
Assessment postings were noted by A/CC on 29 Nov.   -   References: MPEC 2011-W54 plus DOU 2011-W76
2011 WK15NEODyS1700 Nov. 242020-2082271.96e-09-5.19-5.840Based on 13 optical observations (of which 0 are rejected as outliers) from 2011-11-22.374 to 2011-11-23.921.
An assessment posting was noted by A/CC on 24 Nov.   -   References: MPEC 2011-W42
2011 WQ4NEODyS1702 Nov. 232088-208812.81e-09-10.01-10.010Based on 55 optical observations (of which 1 are rejected as outliers) from 2011-11-18.276 to 2011-11-23.179.
JPL Sentry1702 Nov. 23204812.0e-07-7.83-7.830Analysis based on 55 observations spanning 4.9036 days (2011-Nov-18.27488 to 2011-Nov-23.17845). Diameter approximately 0.011 km. from mean, weighted H=27.4.
Assessment postings were noted by A/CC on 19 Nov., 20 Nov., 21 Nov., 22 Nov. & 23 Nov.   -   References: MPEC 2011-W26 plus DOUs 2011-W30, 2011-W31, 2011-W35 & 2011-W37
2011 WL2NEODyS1640 Nov. 30R E M O V E D
JPL Sentry1640 Nov. 30210416.0e-09-6.46-6.460Analysis based on 133 observations spanning 13.901 days (2011-Nov-16.31883 to 2011-Nov-30.22008). Diameter approximately 0.240 km. from mean, weighted H=20.7.
Assessment postings were noted by A/CC on 18 Nov., 19 Nov., 21 Nov., 22 Nov., 23 Nov., 24 Nov., 25 Nov., 27 Nov., 29 Nov. & 30 Nov.   -   References: MPEC 2011-W11 plus DOUs 2011-W23, 2011-W31, 2011-W35, 2011-W37, 2011-W43, 2011-W46, 2011-W63, 2011-W76 & 2011-W83
2011 VG9JPL Sentry1626 Nov. 282086-210983.1e-06-4.00-4.290Analysis based on 51 observations spanning 11.893 days (2011-Nov-15.37847 to 2011-Nov-27.27152). Diameter approximately 0.120 km. from mean, weighted H=22.2.
NEODyS1626 Nov. 282086-208621.81e-06-4.23-4.480Based on 51 optical observations (of which 0 are rejected as outliers) from 2011-11-15.379 to 2011-11-27.272.
Assessment postings were noted by A/CC on 17 Nov., 18 Nov., 19 Nov., 23 Nov., 24 Nov., 25 Nov., 27 Nov. & 28 Nov.   -   References: MPEC 2011-W03 plus DOUs 2011-W08, 2011-W09, 2011-W23, 2011-W37, 2011-W43, 2011-W46, 2011-W63 & 2011-W67
2011 UE305JPL Sentry1640 Nov. 30210924.8e-06-3.78-3.800Analysis based on 35 observations spanning 29.989 days (2011-Oct-30.46441 to 2011-Nov-29.45345). Diameter approximately 0.170 km. from mean, weighted H=21.4.
NEODyS1608 Nov. 18R E M O V E D
Assessment postings were noted by A/CC on 3 Nov., 4 Nov., 18 Nov., 21 Nov., 23 Nov., 28 Nov., 29 Nov. & 30 Nov.   -   References: MPEC 2011-V14 plus DOUs 2011-V17, 2011-W09, 2011-W31, 2011-W37, 2011-W67, 2011-W76 & 2011-W83
2011 UZ255JPL Sentry1626 Nov. 282066-207222.7e-05-3.79-3.790Analysis based on 94 observations spanning 27.844 days (2011-Oct-30.44574 to 2011-Nov-27.28981). Diameter approximately 0.075 km. from mean, weighted H=23.3.
NEODyS1626 Nov. 282072-208332.0e-05-3.91-3.910Based on 94 optical observations (of which 0 are rejected as outliers) from 2011-10-30.447 to 2011-11-27.291.
Assessment postings were noted by A/CC on 1 Nov., 2 Nov., 3 Nov., 4 Nov., 5 Nov., 6 Nov., 9 Nov., 17 Nov., 18 Nov., 20 Nov., 24 Nov., 25 Nov., 27 Nov. & 28 Nov.   -   References: DOUs 2011-V08, 2011-V15, 2011-V17, 2011-V19, 2011-V29, 2011-V33, 2011-W08, 2011-W09, 2011-W30, 2011-W43, 2011-W46, 2011-W63 & 2011-W67
2011 UM169JPL Sentry1730 Nov. 42100-2107195.4e-05-4.49-4.710Analysis based on 39 observations spanning 6.7504 days (2011-Oct-27.37573 to 2011-Nov-03.12613). Diameter approximately 0.033 km. from mean, weighted H=25.0.
Assessment postings were noted by A/CC on 2 Nov., 3 Nov. & 4 Nov.   -   References: DOUs 2011-V08, 2011-V15 & 2011-V17
2011 UL169NEODyS1634 Nov. 22057-206651.2e-05-6.54-6.590Based on 26 optical observations (of which 0 are rejected as outliers) from 2011-10-27.293 to 2011-10-31.274.
JPL Sentry1634 Nov. 22057-207351.3e-05-6.51-6.570Analysis based on 26 observations spanning 3.9809 days (2011-Oct-27.2919 to 2011-Oct-31.27277). Diameter approximately 0.007 km. from mean, weighted H=28.3.
Assessment postings were noted by A/CC on 2 Nov.   -   References: DOU 2011-V08
2011 UR63JPL Sentry1532 Nov. 3211031.2e-07-7.56-7.770Analysis based on 28 observations spanning 12.128 days (2011-Oct-21.25408 to 2011-Nov-02.38218). Diameter approximately 0.024 km. from mean, weighted H=25.7.
An assessment posting was noted by A/CC on 3 Nov.   -   References: DOU 2011-V15
2011 UD21JPL Sentry1619 Nov. 25210514.9e-06-7.51-7.510Analysis based on 85 observations spanning 36.811 days (2011-Oct-18.42484 to 2011-Nov-24.235388). Diameter approximately 0.007 km. from mean, weighted H=28.5.
Assessment postings were noted by A/CC on 2 Nov., 4 Nov., 7 Nov., 11 Nov., 18 Nov. & 25 Nov.   -   References: DOUs 2011-V08, 2011-V17, 2011-V30, 2011-V36, 2011-W09 & 2011-W46
2011 UTJPL Sentry1532 Nov. 32034-210984.4e-06-5.83-6.370Analysis based on 73 observations spanning 11.862 days (2011-Oct-17.41107 to 2011-Oct-29.27325). Diameter approximately 0.024 km. from mean, weighted H=25.7.
An assessment posting was noted by A/CC on 3 Nov.   -   References: DOU 2011-V15
2011 PU1NEODyS1545 Nov. 152081-208841.69e-04-4.15-4.280Based on 55 optical observations (of which 1 are rejected as outliers) from 2011-08-06.968 to 2011-09-21.321.
JPL Sentry1545 Nov. 152063-2106171.8e-04-4.11-4.460Analysis based on 55 observations spanning 45.352 days (2011-Aug-06.9677 to 2011-Sep-21.319885). Diameter approximately 0.033 km. from mean, weighted H=25.1.
Assessment postings were noted by A/CC on 15 Nov.   -   References: DOU 2011-V42
2009 VZ39JPL Sentry0403 Nov. 132012-21107947.0e-06-6.03-6.870Analysis based on 8 observations spanning .04342 days (2009-Nov-10.27204 to 2009-Nov-10.31546). Diameter approximately 0.009 km. from mean, weighted H=27.9.
An assessment posting was noted by A/CC on 13 Nov.   -   References: no recent MPECs
2008 VS4JPL Sentry0205 Nov. 192011-21102637.1e-07-4.86-4.970Analysis based on 10 observations spanning .08330 days (2008-Nov-07.413 to 2008-Nov-07.4963). Diameter approximately 0.050 km. from mean, weighted H=24.2.
An assessment posting was noted by A/CC on 19 Nov.   -   References: no recent MPECs
2008 SH148JPL Sentry0517 Nov. 202014-21101027.1e-07-6.68-7.340Analysis based on 11 observations spanning .10211 days (2008-Sep-29.18897 to 2008-Sep-29.29108). Diameter approximately 0.020 km. from mean, weighted H=26.1.
An assessment posting was noted by A/CC on 20 Nov.   -   References: no recent MPECs
2007 YMJPL Sentry0608 Nov. 302020-21091133.7e-06-5.94-6.800Analysis based on 12 observations spanning .12805 days (2007-Dec-17.39661 to 2007-Dec-17.52466). Diameter approximately 0.020 km. from mean, weighted H=26.2.
An assessment posting was noted by A/CC on 30 Nov.   -   References: no recent MPECs
C   L   E   A   R   E   D
2011 WL15NEODyS1645 Nov. 27R E M O V E D
JPL Sentry1645 Nov. 27R E M O V E DRisk listing removed at 0950 UTC 27 Nov.
Assessment postings were noted by A/CC on 23 Nov., 24 Nov., 25 Nov. & 27 Nov.   -   References: MPEC 2011-W40 plus DOUs 2011-W46, 2011-W63, 2011-W67, 2011-W76 & 2011-W83
2011 WW4JPL Sentry1557 Nov. 21R E M O V E DRisk listing removed at 0848 UTC 21 Nov.
Assessment postings were noted by A/CC on 19 Nov. & 21 Nov.   -   References: MPEC 2011-W29 plus DOUs 2011-W31, 2011-W37 & 2011-W67
2011 WO4JPL Sentry1631 Nov. 20R E M O V E DRisk listing removed at 0855 UTC 20 Nov.
Assessment postings were noted by A/CC on 19 Nov. & 20 Nov.   -   References: MPEC 2011-W24 plus DOUs 2011-W30, 2011-W31, 2011-W35, 2011-W37, 2011-W43, 2011-W46 & 2011-W63
2011 WU2JPL Sentry1618 Nov. 19R E M O V E DRisk listing removed at 0849 UTC 19 Nov.
An assessment posting was noted by A/CC on 19 Nov.   -   References: MPEC 2011-W21 plus DOU 2011-W23
2011 WS2NEODyS1631 Nov. 20R E M O V E D
JPL Sentry1631 Nov. 20R E M O V E DRisk listing removed at 0910 UTC 20 Nov.
Assessment postings were noted by A/CC on 19 Nov. & 20 Nov.   -   References: MPEC 2011-W19 plus DOUs 2011-W30, 2011-W31, 2011-W37 & 2011-W67
2011 WQ2NEODyS1631 Nov. 20R E M O V E D
JPL Sentry1631 Nov. 20R E M O V E DRisk listing removed at 0852 UTC 20 Nov.
Assessment postings were noted by A/CC on 18 Nov., 19 Nov. & 20 Nov.   -   References: MPEC 2011-W15 plus DOUs 2011-W23, 2011-W30, 2011-W31 & 2011-W43
2011 UW255NEODyS1634 Nov. 2R E M O V E D
JPL Sentry1634 Nov. 2R E M O V E DRisk listing removed at 1135 UTC 2 Nov.
Assessment postings were noted by A/CC on 1 Nov. & 2 Nov.   -   References: DOUs 2011-V08 & 2011-V15
2011 UA193NEODyS1634 Nov. 2R E M O V E D
JPL Sentry1634 Nov. 2R E M O V E DRisk listing removed at 1132 UTC 2 Nov.
Assessment postings were noted by A/CC on 2 Nov.   -   References: DOUs 2011-V08, 2011-V15, 2011-V17, 2011-V19 & 2011-V29
2011 UX192NEODyS1634 Nov. 2R E M O V E D
An assessment posting was noted by A/CC on 2 Nov.   -   References: DOUs 2011-V08, 2011-V15, 2011-V29 & 2011-W30
2011 UG169NEODyS1626 Nov. 28R E M O V E D
JPL Sentry2304 Nov. 27R E M O V E DRisk listing removed at 2248 UTC 27 Nov.
Assessment postings were noted by A/CC on 27 Nov. & 28 Nov.   -   References: MPEC 2011-W65
2011 UW158NEODyS1656 Nov. 17R E M O V E D
JPL Sentry1656 Nov. 17R E M O V E DRisk listing removed at 0850 UTC 17 Nov.
Assessment postings were noted by A/CC on 2 Nov., 3 Nov., 4 Nov., 5 Nov., 7 Nov., 10 Nov. & 17 Nov.   -   References: DOUs 2011-V08, 2011-V15, 2011-V17, 2011-V19, 2011-V34, 2011-W08, 2011-W43, 2011-W63 & 2011-W76
2011 UV158NEODyS1634 Nov. 2R E M O V E D
JPL Sentry1634 Nov. 2R E M O V E DRisk listing removed at 1215 UTC 2 Nov.
Assessment postings were noted by A/CC on 2 Nov.   -   References: DOUs 2011-V08, 2011-V17, 2011-V33, 2011-W01, 2011-W08, 2011-W30, 2011-W35 & 2011-W43
2011 UL21NEODyS1730 Nov. 4R E M O V E D
JPL Sentry1730 Nov. 4R E M O V E DRisk listing removed at 0851 UTC 4 Nov.
Assessment postings were noted by A/CC on 2 Nov. & 4 Nov.   -   References: DOUs 2011-V08, 2011-V17, 2011-V40 & 2011-W43

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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