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 RD34	NEODyS	1543 Sept. 23	2057-2111	25	1.42e-05	-6.26	-6.88	0	Based on 54 optical observations (of which 2 are rejected as outliers) from 2016-09-11.431 to 2016-09-19.331.
	JPL Sentry	1615 Sept. 21	2051-2103	23	9.3e-05	-5.38	-6.13	0	Analysis 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 RR1	NEODyS	1717 Sept. 14	2063-2113	68	8.04e-05	-5.78	-6.48	0	Based on 31 optical observations (of which 0 are rejected as outliers) from 2016-09-04.421 to 2016-09-12.360.
	JPL Sentry	1547 Sept. 13	2063-2113	34	2.0e-04	-5.39	-5.77	0	Analysis 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 RX	JPL Sentry	1734 Sept. 12	2072	1	1.7e-07	-6.72	-6.72	0	Analysis 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.
	NEODyS	1632 Sept. 10	2072	1	1.71e-07	-6.71	-6.71	0	Based 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 NL56	NEODyS	1454 Sept. 15	2020-2107	21	5.52e-08	-3.61	-3.7	0	Based on 6 optical observations (of which 0 are rejected as outliers) from 2016-07-12.445 to 2016-07-15.225.
2016 NL56	An assessment posting was noted by A/CC on 15 Sept. - References: no MPECs

2016 NL39	JPL Sentry	2000 Sept. 1	2055-2116	85	4.4e-04	-4.92	-5.48	0	Analysis 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.
	NEODyS	1900 Sept. 1	2057-2116	208	7.32e-04	-4.67	-4.74	0	Based 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 JO38	JPL Sentry	0405 Sept. 6	2018-2115	466	9.6e-07	-5.61	-6.27	0	Analysis 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.
2016 JO38	An assessment posting was noted by A/CC on 6 Sept. - References: no MPECs

2016 JB29	JPL Sentry	1552 Sept. 8	2090	1	2.3e-07	-6.78	-6.78	0	Analysis 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.
	NEODyS	1552 Sept. 8	2090	2	5.04e-07	-6.43	-6.44	0	Based 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 BP123	JPL Sentry	0352 Sept. 3	2017-2115	228	5.9e-07	-7.24	-8.11	0	Analysis 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.
2012 BP123	An assessment posting was noted by A/CC on 3 Sept. - References: no recent MPECs

2008 EM68	JPL Sentry	0432 Sept. 13	2017-2115	1144	1.3e-05	-5.31	-5.65	0	Analysis 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.
2008 EM68	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 RP17	JPL Sentry	1530 Sept. 16	R E M O V E D						Risk listing removed at 1500 UTC 16 Sept.
	NEODyS	1530 Sept. 16	R 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 RV1	NEODyS	1611 Sept. 9	R E M O V E D
	JPL Sentry	1611 Sept. 9	R E M O V E D						Risk 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 RB1	JPL Sentry	2331 Sept. 6	R E M O V E D						Risk listing removed at 2311 UTC 6 Sept.
2016 RB1	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 QJ44	JPL Sentry	1609 Sept. 3	R E M O V E D						Risk listing removed at 1500 UTC 3 Sept.
2016 QJ44	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 QH44	JPL Sentry	1550 Sept. 2	R E M O V E D						Risk listing removed at 1500 UTC 2 Sept.
2016 QH44	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 QM11	JPL Sentry	1552 Sept. 8	R E M O V E D						Risk listing removed at 1500 UTC 8 Sept.
	NEODyS	1551 Sept. 6	R 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 QA2	NEODyS	2046 Aug. 28	R E M O V E D
2016 QA2	An assessment posting was noted by A/CC on 28 Aug. - References: MPEC 2016-Q25 plus DOUs 2016-Q27, 2016-Q37 & 2016-Q51

2016 PS26	NEODyS	1520 Aug. 28	R E M O V E D
	JPL Sentry	1551 Aug. 27	R E M O V E D						Risk 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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