A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted in the Last 30 Days

Compiled at 1511 UTC on 24 September 2016

[ The Tracking News | ephemerides | cleared ]

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
2016 RD34NEODyS1543 Sept. 232057-2111251.42e-05-6.26-6.880Based on 54 optical observations (of which 2 are rejected as outliers) from 2016-09-11.431 to 2016-09-19.331.
JPL Sentry1615 Sept. 212051-2103239.3e-05-5.38-6.130Analysis based on 52 observations spanning 7.9002 days (2016-Sep-11.42997 to 2016-Sep-19.330203). Diameter approximately 0.012 km. from mean, weighted H=27.2.
Assessment postings were noted by A/CC on 14 Sept., 17 Sept., 18 Sept., 20 Sept., 21 Sept. & 23 Sept.   -   References: MPEC 2016-R159 plus DOUs 2016-R163, 2016-S04, 2016-S18 & 2016-S19
2016 RR1NEODyS1717 Sept. 142063-2113688.04e-05-5.78-6.480Based on 31 optical observations (of which 0 are rejected as outliers) from 2016-09-04.421 to 2016-09-12.360.
JPL Sentry1547 Sept. 132063-2113342.0e-04-5.39-5.770Analysis based on 31 observations spanning 7.9385 days (2016-Sep-04.42071 to 2016-Sep-12.359163). Diameter approximately 0.010 km. from mean, weighted H=27.7.
Assessment postings were noted by A/CC on 6 Sept., 7 Sept., 8 Sept., 9 Sept., 10 Sept., 12 Sept., 13 Sept. & 14 Sept.   -   References: MPEC 2016-R66 plus DOUs 2016-R74, 2016-R87, 2016-R106, 2016-R108 & 2016-R143
2016 RXJPL Sentry1734 Sept. 12207211.7e-07-6.72-6.720Analysis based on 30 observations spanning 6.1707 days (2016-Sep-03.29516 to 2016-Sep-09.465905). Diameter approximately 0.028 km. from mean, weighted H=25.4.
NEODyS1632 Sept. 10207211.71e-07-6.71-6.710Based on 30 optical observations (of which 0 are rejected as outliers) from 2016-09-03.296 to 2016-09-09.467.
Assessment postings were noted by A/CC on 6 Sept., 7 Sept., 8 Sept., 9 Sept., 10 Sept. & 12 Sept.   -   References: MPEC 2016-R49 plus DOUs 2016-R74, 2016-R87, 2016-R106 & 2016-R108
2016 NL56NEODyS1454 Sept. 152020-2107215.52e-08-3.61-3.70Based on 6 optical observations (of which 0 are rejected as outliers) from 2016-07-12.445 to 2016-07-15.225.
An assessment posting was noted by A/CC on 15 Sept.   -   References: no MPECs
2016 NL39JPL Sentry2000 Sept. 12055-2116854.4e-04-4.92-5.480Analysis based on 70 observations spanning 27.975 days (2016-Jul-13.462934 to 2016-Aug-10.438324). Diameter approximately 0.010 km. from mean, weighted H=27.6.
NEODyS1900 Sept. 12057-21162087.32e-04-4.67-4.740Based on 70 optical observations (of which 0 are rejected as outliers) from 2016-07-13.464 to 2016-08-10.439.
Assessment postings were noted by A/CC on 1 Sept.   -   References: DOU 2016-R01
2016 JO38JPL Sentry0405 Sept. 62018-21154669.6e-07-5.61-6.270Analysis based on 15 observations spanning .96815 days (2016-May-03.29327 to 2016-May-04.26142). Diameter approximately 0.037 km. from mean, weighted H=24.8.
An assessment posting was noted by A/CC on 6 Sept.   -   References: no MPECs
2016 JB29JPL Sentry1552 Sept. 8209012.3e-07-6.78-6.780Analysis based on 144 observations spanning 119.20 days (2016-May-11.37449 to 2016-Sep-07.578036). Diameter approximately 0.039 km. from mean, weighted H=24.7.
NEODyS1552 Sept. 8209025.04e-07-6.43-6.440Based on 152 optical observations (of which 4 are rejected as outliers) from 2016-05-11.375 to 2016-09-07.579.
Assessment postings were noted by A/CC on 8 Sept.   -   References: DOU 2016-R87
2012 BP123JPL Sentry0352 Sept. 32017-21152285.9e-07-7.24-8.110Analysis 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.
An assessment posting was noted by A/CC on 3 Sept.   -   References: no recent MPECs
2008 EM68JPL Sentry0432 Sept. 132017-211511441.3e-05-5.31-5.650Analysis 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=27.8.
Assessment postings were noted by A/CC on 10 Sept., 12 Sept. & 13 Sept.   -   References: no recent MPECs
C   L   E   A   R   E   D
2016 RP17JPL Sentry1530 Sept. 16R E M O V E DRisk listing removed at 1500 UTC 16 Sept.
NEODyS1530 Sept. 16R E M O V E D
Assessment postings were noted by A/CC on 8 Sept., 9 Sept., 11 Sept., 12 Sept. & 16 Sept.   -   References: MPEC 2016-R84 plus DOUs 2016-R106, 2016-R135, 2016-R142, 2016-S02 & 2016-S05
2016 RV1NEODyS1611 Sept. 9R E M O V E D
JPL Sentry1611 Sept. 9R E M O V E DRisk listing removed at 1502 UTC 9 Sept.
Assessment postings were noted by A/CC on 6 Sept., 7 Sept. & 9 Sept.   -   References: MPEC 2016-R64 plus DOUs 2016-R74, 2016-R106, 2016-R142 & 2016-R143
2016 RB1JPL Sentry2331 Sept. 6R E M O V E DRisk listing removed at 2311 UTC 6 Sept.
An assessment posting was noted by A/CC on 6 Sept.   -   References: MPECs 2016-R57, 2016-R70, 2016-R71, 2016-R72 & 2016-R73 plus DOUs 2016-R87 & 2016-R106
2016 QJ44JPL Sentry1609 Sept. 3R E M O V E DRisk listing removed at 1500 UTC 3 Sept.
Assessment postings were noted by A/CC on 1 Sept. & 3 Sept.   -   References: MPEC 2016-R07 plus DOUs 2016-R33, 2016-R87, 2016-R106, 2016-R108 & 2016-S19
2016 QH44JPL Sentry1550 Sept. 2R E M O V E DRisk listing removed at 1500 UTC 2 Sept.
Assessment postings were noted by A/CC on 1 Sept. & 2 Sept.   -   References: MPEC 2016-R06 plus DOUs 2016-R20, 2016-R37, 2016-R106, 2016-R142 & 2016-S19
2016 QM11JPL Sentry1552 Sept. 8R E M O V E DRisk listing removed at 1500 UTC 8 Sept.
NEODyS1551 Sept. 6R E M O V E D
Assessment postings were noted by A/CC on 31 Aug., 1 Sept., 2 Sept., 3 Sept., 6 Sept. & 8 Sept.   -   References: MPEC 2016-Q61 plus DOUs 2016-R01, 2016-R20, 2016-R33, 2016-R56, 2016-R87, 2016-R108, 2016-R143, 2016-R164, 2016-S04 & 2016-S19
2016 QA2NEODyS2046 Aug. 28R E M O V E D
An assessment posting was noted by A/CC on 28 Aug.   -   References: MPEC 2016-Q25 plus DOUs 2016-Q27, 2016-Q37 & 2016-Q51
2016 PS26NEODyS1520 Aug. 28R E M O V E D
JPL Sentry1551 Aug. 27R E M O V E DRisk listing removed at 1459 UTC 27 Aug.
Assessment postings were noted by A/CC on 27 Aug. & 28 Aug.   -   References: DOU 2016-Q20

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

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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