A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted in the Last 30 Days

Compiled at 0431 UTC on 23 September 2014

[ 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
2014 SP142JPL Sentry0431 Sept. 232063-2109155.8e-06-3.81-4.320Analysis based on 15 observations spanning 24.692 days (2014-Aug-28.49787 to 2014-Sep-22.18995). Diameter approximately 0.150 km. from mean, weighted H=21.7.
An assessment posting was noted by A/CC on 23 Sept.   -   References: MPEC 2014-S50
2014 SN1NEODyS1744 Sept. 212059-205912.04e-06-5.79-5.790Based on 20 optical observations (of which 0 are rejected as outliers) from 2014-09-18.438 to 2014-09-20.520.
JPL Sentry1744 Sept. 21205912.2e-06-5.39-5.390Analysis based on 20 observations spanning 2.0826 days (2014-Sep-18.43676 to 2014-Sep-20.51938). Diameter approximately 0.037 km. from mean, weighted H=24.8.
Assessment postings were noted by A/CC on 20 Sept. & 21 Sept.   -   References: MPEC 2014-S24 plus DOU 2014-S31
2014 RS17JPL Sentry1520 Sept. 222099-211025.1e-07-5.33-5.360Analysis based on 69 observations spanning 9.9389 days (2014-Sep-12.1736 to 2014-Sep-22.11254). Diameter approximately 0.077 km. from mean, weighted H=23.2.
NEODyS1501 Sept. 222110-211011.45e-07-5.89-5.890Based on 69 optical observations (of which 0 are rejected as outliers) from 2014-09-12.174 to 2014-09-22.113.
Assessment postings were noted by A/CC on 14 Sept., 15 Sept., 16 Sept., 17 Sept., 20 Sept., 21 Sept. & 22 Sept.   -   References: MPEC 2014-R98 plus DOUs 2014-R100, 2014-R101, 2014-S04, 2014-S06, 2014-S21 & 2014-S33
2014 QC391JPL Sentry2315 Sept. 122078-2114325.8e-05-5.78-6.190Analysis based on 17 observations spanning 5.7591 days (2014-Aug-29.26924 to 2014-Sep-04.028333). Diameter approximately 0.011 km. from mean, weighted H=27.5.
NEODyS1450 Sept. 52084-2113546.46e-05-5.74-6.170Based on 18 optical observations (of which 0 are rejected as outliers) from 2014-08-29.270 to 2014-09-04.029.
Assessment postings were noted by A/CC on 4 Sept., 5 Sept. & 12 Sept.   -   References: MPEC 2014-R28 plus DOUs 2014-R31 & 2014-R48
2014 QJ365NEODyS1527 Sept. 22095-211272.19e-07-8.07-8.280Based on 14 optical observations (of which 0 are rejected as outliers) from 2014-08-30.305 to 2014-09-01.325.
An assessment posting was noted by A/CC on 2 Sept.   -   References: MPEC 2014-R09
2014 QN266NEODyS1744 Sept. 212045-21131071.09e-05-5.69-6.40Based on 60 optical observations (of which 0 are rejected as outliers) from 2014-08-18.456 to 2014-09-19.396.
JPL Sentry1539 Sept. 202045-204882.3e-05-5.26-5.760Analysis based on 60 observations spanning 31.940 days (2014-Aug-18.45521 to 2014-Sep-19.394733). Diameter approximately 0.020 km. from mean, weighted H=26.2.
Assessment postings were noted by A/CC on 26 Aug., 27 Aug., 28 Aug., 29 Aug., 30 Aug., 2 Sept., 3 Sept., 5 Sept., 6 Sept., 8 Sept., 15 Sept., 17 Sept., 18 Sept., 20 Sept. & 21 Sept.   -   References: MPEC 2014-Q57 plus DOUs 2014-Q63, 2014-Q73, 2014-Q81, 2014-Q90, 2014-R15, 2014-R24, 2014-R48, 2014-R56, 2014-R71, 2014-R100, 2014-R101, 2014-S06 & 2014-S21
2014 QF33NEODyS1744 Sept. 212075-208241.51e-07-6.01-6.250Based on 45 optical observations (of which 0 are rejected as outliers) from 2014-08-20.478 to 2014-09-19.340.
JPL Sentry1539 Sept. 202076-208221.8e-07-5.95-6.080Analysis based on 45 observations spanning 29.862 days (2014-Aug-20.47726 to 2014-Sep-19.339372). Diameter approximately 0.060 km. from mean, weighted H=23.7.
Assessment postings were noted by A/CC on 24 Aug., 25 Aug., 27 Aug., 28 Aug., 30 Aug., 3 Sept., 8 Sept., 17 Sept., 20 Sept. & 21 Sept.   -   References: DOUs 2014-Q34, 2014-Q46, 2014-Q63, 2014-Q73, 2014-Q90, 2014-R24, 2014-R71, 2014-S06 & 2014-S21
2014 OY391JPL Sentry2240 Sept. 122018-21141281.0e-06-5.88-6.500Analysis based on 7 observations spanning .96562 days (2014-Jul-25.43259 to 2014-Jul-26.398206). Diameter approximately 0.022 km. from mean, weighted H=26.0.
An assessment posting was noted by A/CC on 12 Sept.   -   References: no MPECs
2013 XK22NEODyS1744 Sept. 212101-210224.38e-05-4.32-4.320Based on 54 optical observations (of which 3 are rejected as outliers) from 2013-12-14.432 to 2014-09-19.481.
JPL Sentry1539 Sept. 202101-210223.9e-05-4.36-4.370Analysis based on 53 observations spanning 279.05 days (2013-Dec-14.43128 to 2014-Sep-19.480502). Diameter approximately 0.051 km. from mean, weighted H=24.1.
Assessment postings were noted by A/CC on 28 Aug., 17 Sept., 20 Sept. & 21 Sept.   -   References: DOUs 2014-Q73, 2014-S06 & 2014-S21
2009 FZ4JPL Sentry0307 Sept. 222015-21103163.1e-06-5.34-6.190Analysis based on 11 observations spanning .59999 days (2009-Mar-19.36974 to 2009-Mar-19.96973). Diameter approximately 0.031 km. from mean, weighted H=25.2.
An assessment posting was noted by A/CC on 22 Sept.   -   References: no recent MPECs
2008 EM68JPL Sentry0441 Sept. 132015-21105594.6e-06-5.79-6.280Analysis based on 11 observations spanning .11019 days (2008-Mar-08.25164 to 2008-Mar-08.36183). Diameter approximately 0.010 km. from mean, weighted H=27.5.
Assessment postings were noted by A/CC on 8 Sept., 11 Sept. & 13 Sept.   -   References: no recent MPECs
C   L   E   A   R   E   D
2014 RCJPL Sentry1635 Sept. 5R E M O V E DRisk listing removed at 1507 UTC 5 Sept.
NEODyS1450 Sept. 5R E M O V E D
Assessment postings were noted by A/CC on 3 Sept., 4 Sept. & 5 Sept.   -   References: MPECs 2014-R23 & 2014-R26 plus DOUs 2014-R31, 2014-R48, 2014-R56, 2014-R65, 2014-R71, 2014-R74 & 2014-R92, radar: 6 Sept. & 15 Sept.
2014 QN433NEODyS1738 Sept. 17R E M O V E D
JPL Sentry1410 Sept. 12R E M O V E DRisk listing removed at 1408 UTC 12 Sept.
Assessment postings were noted by A/CC on 6 Sept., 12 Sept. & 17 Sept.   -   References: MPEC 2014-R54 plus DOUs 2014-R85 & 2014-S06
2014 QL433NEODyS1738 Sept. 17R E M O V E D
JPL Sentry1410 Sept. 12R E M O V E DRisk listing removed at 1404 UTC 12 Sept.
Assessment postings were noted by A/CC on 5 Sept., 6 Sept., 8 Sept., 12 Sept. & 17 Sept.   -   References: MPEC 2014-R52 plus DOUs 2014-R56, 2014-R71, 2014-R85, 2014-R100, 2014-R101 & 2014-S06
2014 QO296NEODyS1517 Sept. 9R E M O V E D
JPL Sentry1517 Sept. 9R E M O V E DRisk listing removed at 1401 UTC 9 Sept.
Assessment postings were noted by A/CC on 29 Aug., 30 Aug., 1 Sept., 2 Sept., 3 Sept. & 9 Sept.   -   References: MPEC 2014-Q77 plus DOUs 2014-Q90, 2014-R03, 2014-R15 & 2014-R74
2014 QC3NEODyS1528 Aug. 27R E M O V E D
JPL Sentry1547 Aug. 25R E M O V E DRisk listing removed at 1404 UTC 25 Aug.
Assessment postings were noted by A/CC on 24 Aug., 25 Aug., 26 Aug. & 27 Aug.   -   References: DOUs 2014-Q34, 2014-Q46, 2014-Q51, 2014-Q63, 2014-Q73 & 2014-R76
2012 DJ14JPL Sentry1538 Sept. 13R E M O V E DRisk listing removed at 1402 UTC 13 Sept.
An assessment posting was noted by A/CC on 13 Sept.   -   References: DOU 2014-R92
2007 RY19JPL Sentry1634 Sept. 8R E M O V E DRisk listing removed at 1620 UTC 8 Sept.
NEODyS1526 Sept. 8R E M O V E D
Assessment postings were noted by A/CC on 8 Sept.   -   References: MPEC 2014-R72 plus DOUs 2014-R74 & 2014-R101

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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