A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted in the Last 31 Days

Compiled at 0720 UTC on 24 January 2020

[ 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 NASA/JPL Sentry and NEODyS CLOMON2.
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

2020 BB5	NEODyS	0720 Jan. 24	2087-2118	18	1.93e-04	-6.24	-6.3	0	Based on 28 optical observations (of which 0 are rejected as outliers) from 2020-01-23.324 to 2020-01-24.007.
	JPL Sentry	0532 Jan. 24	2087-2119	15	0.0001567920301	-6.30	-6.42	0	Computed at 20:32 Jan. 23rd Pacific time based on 28 observations spanning .68336 days (2020-Jan-23.32313 to 2020-Jan-24.00649). Diameter approximately 0.004 km. from weighted mean H=29.53.
	Assessment postings were noted by A/CC on 24 Jan. - References: MPEC 2020-B109

2020 BY4	NEODyS	0720 Jan. 24	2055-2117	17	3.47e-06	-5.77	-6.2	0	Based on 21 optical observations (of which 3 are rejected as outliers) from 2020-01-20.414 to 2020-01-24.058.
	JPL Sentry	0532 Jan. 24	2055-2117	17	3.838952e-06	-5.72	-6.14	0	Computed at 20:30 Jan. 23rd Pacific time based on 18 observations spanning 3.6445 days (2020-Jan-20.412927 to 2020-Jan-24.057461). Diameter approximately 0.020 km. from weighted mean H=26.11.
	Assessment postings were noted by A/CC on 24 Jan. - References: MPEC 2020-B106

2020 BK3	NEODyS	1640 Jan. 23	2090-2118	22	5.02e-04	-4.43	-4.58	0	Based on 42 optical observations (of which 0 are rejected as outliers) from 2020-01-22.396 to 2020-01-22.939.
	JPL Sentry	0022 Jan. 23	2091-2107	10	0.00040305755	-4.51	-4.62	0	Computed at 16:04 Jan. 22nd Pacific time based on 42 observations spanning .54321 days (2020-Jan-22.395303 to 2020-Jan-22.93851). Diameter approximately 0.014 km. from weighted mean H=26.89.
	Assessment postings were noted by A/CC on 23 Jan. - References: MPEC 2020-B85

2020 BH3	NEODyS	1640 Jan. 23	2059-2106	7	1.06e-06	-6.67	-7.07	0	Based on 15 optical observations (of which 0 are rejected as outliers) from 2020-01-21.276 to 2020-01-22.740.
	JPL Sentry	0022 Jan. 23	2059-2110	11	2.4097e-06	-6.30	-6.68	0	Computed at 16:01 Jan. 22nd Pacific time based on 15 observations spanning 1.4645 days (2020-Jan-21.274771 to 2020-Jan-22.739289). Diameter approximately 0.022 km. from weighted mean H=25.93.
	Assessment postings were noted by A/CC on 23 Jan. - References: MPEC 2020-B83

2020 BY1	NEODyS	0720 Jan. 24	2049	2	1.52e-06	-6.01	-6.04	0	Based on 43 optical observations (of which 0 are rejected as outliers) from 2020-01-20.462 to 2020-01-23.328.
	JPL Sentry	2000 Jan. 23	2049-2057	3	5.947884e-06	-5.41	-5.41	0	Computed at 11:50 Jan. 23rd Pacific time based on 43 observations spanning 2.8661 days (2020-Jan-20.460859 to 2020-Jan-23.32694). Diameter approximately 0.020 km. from weighted mean H=26.17.
	Assessment postings were noted by A/CC on 21 Jan., 22 Jan., 23 Jan. & 24 Jan. - References: MPEC 2020-B56 plus DOUs 2020-B72 & 2020-B94

2020 BF1	JPL Sentry	1605 Jan. 20	2065-2111	3	8.962e-09	-8.77	-9.06	0	Computed at 05:10 Jan. 20th Pacific time based on 19 observations spanning .91693 days (2020-Jan-19.5176 to 2020-Jan-20.434534). Diameter approximately 0.021 km. from weighted mean H=26.09.
2020 BF1	An assessment posting was noted by A/CC on 20 Jan. - References: MPEC 2020-B32

2020 BH	NEODyS	2250 Jan. 19	2097-2117	15	6.19e-06	-7.26	-7.32	0	Based on 28 optical observations (of which 0 are rejected as outliers) from 2020-01-18.333 to 2020-01-19.375.
2020 BH	An assessment posting was noted by A/CC on 19 Jan. - References: MPEC 2020-B12

2020 BB	NEODyS	1700 Jan. 22	2101-2115	4	1.88e-07	-8.97	-9.19	0	Based on 80 optical observations (of which 1 are rejected as outliers) from 2020-01-18.290 to 2020-01-22.067.
	JPL Sentry	1700 Jan. 22	2107-2107	1	2.733e-07	-8.76	-8.76	0	Computed at 08:09 Jan. 22nd Pacific time based on 80 observations spanning 3.7774 days (2020-Jan-18.28892 to 2020-Jan-22.06637). Diameter approximately 0.006 km. from weighted mean H=28.59.
	Assessment postings were noted by A/CC on 19 Jan., 20 Jan., 21 Jan. & 22 Jan. - References: MPEC 2020-B07 plus DOUs 2020-B11, 2020-B37, 2020-B58 & 2020-B72

2020 AN3	NEODyS	2300 Jan. 18	2106	1	2.33e-06	-3.50	-3.5	0	Based on 136 optical observations (of which 3 are rejected as outliers) from 2019-11-09.148 to 2020-01-17.873.
	JPL Sentry	1645 Jan. 18	2106-2106	1	8.826e-07	-3.90	-3.90	0	Computed at 05:47 Jan. 18th Pacific time based on 127 observations spanning 69.725 days (2019-Nov-09.147003 to 2020-Jan-17.872451). Diameter approximately 0.290 km. from weighted mean H=20.35.
	Assessment postings were noted by A/CC on 16 Jan., 17 Jan. & 18 Jan. - References: MPEC 2020-A139 plus DOUs 2020-B03, 2020-B04 & 2020-B05

2020 AY1	JPL Sentry	1605 Jan. 20	2103-2103	1	1.301e-07	-7.33	-7.33	0	Computed at 05:41 Jan. 20th Pacific time based on 102 observations spanning 13.992 days (2020-Jan-05.24158 to 2020-Jan-19.23395). Diameter approximately 0.032 km. from weighted mean H=25.12.
	NEODyS	1605 Jan. 20	2103	1	5.38e-08	-7.73	-7.73	0	Based on 103 optical observations (of which 4 are rejected as outliers) from 2020-01-05.242 to 2020-01-19.235.
	Assessment postings were noted by A/CC on 6 Jan., 7 Jan., 8 Jan., 13 Jan., 14 Jan., 18 Jan. & 20 Jan. - References: MPEC 2020-A77 plus DOUs 2020-A86, 2020-A92, 2020-A123, 2020-A125, 2020-A130, 2020-B04, 2020-B05 & 2020-B37

2020 AR1	JPL Sentry	1735 Jan. 7	R E M O V E D						Risk listing removed at 1457 UTC Jan. 7th
	NEODyS	1735 Jan. 7	2072-2089	2	6.94e-08	-8.33	-8.34	0	Based on 36 optical observations (of which 0 are rejected as outliers) from 2020-01-04.271 to 2020-01-07.382.
	Assessment postings were noted by A/CC on 5 Jan., 6 Jan. & 7 Jan. - References: MPEC 2020-A69 plus DOUs 2020-A81 & 2020-A86

2020 AO1	JPL Sentry	1640 Jan. 10	2049-2049	1	9.077e-08	-6.01	-6.01	0	Computed at 06:02 Jan. 10th Pacific time based on 89 observations spanning 5.0252 days (2020-Jan-04.27153 to 2020-Jan-09.296698). Diameter approximately 0.062 km. from weighted mean H=23.68.
	NEODyS	1640 Jan. 10	2049	1	5.59e-08	-6.24	-6.24	0	Based on 89 optical observations (of which 0 are rejected as outliers) from 2020-01-04.272 to 2020-01-09.297.
	Assessment postings were noted by A/CC on 5 Jan., 6 Jan., 7 Jan., 8 Jan. & 10 Jan. - References: MPEC 2020-A66 plus DOUs 2020-A81, 2020-A86, 2020-A92 & 2020-A110

2020 AC1	JPL Sentry	1700 Jan. 14	2093-2117	7	3.8132e-06	-7.48	-8.01	0	Computed at 06:13 Jan. 14th Pacific time based on 43 observations spanning 9.8722 days (2020-Jan-04.267512 to 2020-Jan-14.1397). Diameter approximately 0.007 km. from weighted mean H=28.41.
	NEODyS	1700 Jan. 14	2093-2117	17	7.3e-06	-7.20	-7.85	0	Based on 43 optical observations (of which 0 are rejected as outliers) from 2020-01-04.268 to 2020-01-14.141.
	Assessment postings were noted by A/CC on 5 Jan., 6 Jan., 7 Jan., 8 Jan. & 14 Jan. - References: MPEC 2020-A56 plus DOUs 2020-A81, 2020-A86, 2020-A92 & 2020-A125

2020 AW	NEODyS	1710 Jan. 6	2063-2118	152	1.13e-04	-6.06	-6.75	0	Based on 21 optical observations (of which 1 are rejected as outliers) from 2020-01-03.353 to 2020-01-06.222.
	JPL Sentry	1635 Jan. 6	2044-2118	82	0.000174526958	-5.84	-6.55	0	Computed at 06:50 Jan. 6th Pacific time based on 20 observations spanning 2.8586 days (2020-Jan-03.36222 to 2020-Jan-06.22082). Diameter approximately 0.006 km. from weighted mean H=28.68.
	Assessment postings were noted by A/CC on 4 Jan. & 6 Jan. - References: MPEC 2020-A53 plus DOU 2020-A81

2019 YV4	NEODyS	1545 Jan. 1	2049-2062	3	4.09e-08	-8.11	-8.39	0	Based on 17 optical observations (of which 0 are rejected as outliers) from 2019-12-30.371 to 2019-12-30.936.
	JPL Sentry	0530 Jan. 1	2035-2049	4	6.18581e-08	-7.86	-7.96	0	Computed at 20:58 Dec. 31st of 2019 Pacific time based on 17 observations spanning .56526 days (2019-Dec-30.36984 to 2019-Dec-30.935097). Diameter approximately 0.012 km. from weighted mean H=27.31.
	Assessment postings were noted by A/CC on 1 Jan. - References: MPEC 2020-A05

2019 YP3	NEODyS	2250 Jan. 19	2111	1	1.07e-07	-7.78	-7.78	0	Based on 57 optical observations (of which 0 are rejected as outliers) from 2019-12-27.534 to 2020-01-19.346.
	JPL Sentry	1630 Jan. 19	2103-2103	1	2.692e-09	-9.26	-9.26	0	Computed at 05:59 Jan. 19th Pacific time based on 57 observations spanning 22.811 days (2019-Dec-27.53345 to 2020-Jan-19.34474). Diameter approximately 0.023 km. from weighted mean H=25.86.
	Assessment postings were noted by A/CC on 29 Dec., 30 Dec., 1 Jan., 3 Jan., 4 Jan., 5 Jan., 7 Jan., 8 Jan., 17 Jan., 18 Jan. & 19 Jan. - References: MPEC 2019-Y112 plus DOUs 2020-A06, 2020-A42, 2020-A55, 2020-A63, 2020-A81, 2020-A86, 2020-A92, 2020-B04 & 2020-B11

2019 YL3	JPL Sentry	1630 Jan. 8	2047-2047	1	1.120e-07	-8.05	-8.05	0	Computed at 07:35 Jan. 8th Pacific time based on 36 observations spanning 4.1836 days (2019-Dec-28.389529 to 2020-Jan-01.573085). Diameter approximately 0.010 km. from weighted mean H=27.70.
	NEODyS	1635 Jan. 3	R E M O V E D
	Assessment postings were noted by A/CC on 28 Dec., 29 Dec., 30 Dec., 3 Jan. & 8 Jan. - References: MPEC 2019-Y108 plus DOUs 2019-Y117, 2020-A42 & 2020-A92

2019 YA3	NEODyS	1710 Jan. 6	2095-2103	2	6.55e-08	-8.16	-8.23	0	Based on 16 optical observations (of which 0 are rejected as outliers) from 2019-12-24.424 to 2020-01-06.235.
	JPL Sentry	1635 Jan. 6	2095-2116	2	2.40018e-08	-8.59	-8.60	0	Computed at 06:13 Jan. 6th Pacific time based on 16 observations spanning 12.811 days (2019-Dec-24.422791 to 2020-Jan-06.23403). Diameter approximately 0.018 km. from weighted mean H=26.42.
	Assessment postings were noted by A/CC on 27 Dec., 4 Jan. & 6 Jan. - References: MPEC 2019-Y99 plus DOUs 2020-A55 & 2020-A81

2019 YW2	JPL Sentry	1600 Jan. 21	2119-2119	2	5.1413e-08	-7.09	-7.18	0	Computed at 06:04 Jan. 21st Pacific time based on 130 observations spanning 23.786 days (2019-Dec-24.513641 to 2020-Jan-17.29966). Diameter approximately 0.054 km. from weighted mean H=23.98.
	NEODyS	1600 Jan. 21	2106-2117	5	6.52e-08	-6.98	-7.3	0	Based on 132 optical observations (of which 4 are rejected as outliers) from 2019-12-24.514 to 2020-01-17.300.
	Assessment postings were noted by A/CC on 26 Dec., 27 Dec., 28 Dec., 31 Dec., 1 Jan., 2 Jan., 3 Jan., 5 Jan., 6 Jan., 7 Jan., 8 Jan., 9 Jan., 14 Jan., 16 Jan., 17 Jan., 18 Jan. & 21 Jan. - References: MPEC 2019-Y93 plus DOUs 2019-Y95, 2019-Y107, 2019-Y136, 2020-A27, 2020-A42, 2020-A63, 2020-A81, 2020-A86, 2020-A92, 2020-A101, 2020-A125, 2020-B03, 2020-B04 & 2020-B58

2019 YV1	JPL Sentry	1700 Jan. 14	2089-2118	8	1.7403478e-05	-5.24	-5.29	0	Computed at 05:38 Jan. 14th Pacific time based on 83 observations spanning 23.999 days (2019-Dec-21.11125 to 2020-Jan-14.11034). Diameter approximately 0.032 km. from weighted mean H=25.10.
	NEODyS	1700 Jan. 14	2089-2118	13	1.57e-05	-5.29	-5.35	0	Based on 83 optical observations (of which 0 are rejected as outliers) from 2019-12-21.112 to 2020-01-14.111.
	Assessment postings were noted by A/CC on 24 Dec., 26 Dec., 27 Dec., 30 Dec., 6 Jan., 7 Jan., 8 Jan., 9 Jan. & 14 Jan. - References: DOUs 2019-Y85, 2019-Y95, 2019-Y117, 2020-A81, 2020-A86, 2020-A92, 2020-A101 & 2020-A125

2019 WA3	JPL Sentry	1640 Jan. 4	2110-2110	1	1.833e-07	-7.40	-7.40	0	Computed at 05:37 Jan. 4th Pacific time based on 17 observations spanning 12.071 days (2019-Nov-25.361902 to 2019-Dec-07.43284). Diameter approximately 0.026 km. from weighted mean H=25.54.
	NEODyS	1640 Jan. 4	2090-2110	3	5.38e-08	-7.95	-7.96	0	Based on 17 optical observations (of which 1 are rejected as outliers) from 2019-11-25.363 to 2019-12-07.434.
	Assessment postings were noted by A/CC on 4 Jan. - References: DOU 2020-A55

2019 WG2	JPL Sentry	1930 Jan. 21	2093-2119	37	4.335045e-05	-4.51	-5.05	0	Computed at 11:06 Jan. 21st Pacific time based on 44 observations spanning 52.609 days (2019-Nov-24.495057 to 2020-Jan-16.10374). Diameter approximately 0.035 km. from weighted mean H=24.92.
	NEODyS	2300 Jan. 18	2093-2118	80	3.1e-05	-4.66	-5.0	0	Based on 44 optical observations (of which 0 are rejected as outliers) from 2019-11-24.496 to 2020-01-16.105.
	Assessment postings were noted by A/CC on 17 Jan., 18 Jan. & 21 Jan. - References: DOU 2020-B04

2019 WV1	NEODyS	0720 Jan. 24	2078-2117	19	2.86e-06	-7.42	-7.89	0	Based on 21 optical observations (of which 0 are rejected as outliers) from 2019-11-24.614 to 2019-12-03.419.
	JPL Sentry	1944 Jan. 23	2078-2117	14	2.801846e-06	-7.41	-7.85	0	Computed at 11:34 Jan. 23rd Pacific time based on 21 observations spanning 8.8051 days (2019-Nov-24.61277 to 2019-Dec-03.417857). Diameter approximately 0.008 km. from weighted mean H=28.20.
	Assessment postings were noted by A/CC on 23 Jan. & 24 Jan. - References: DOU 2020-B94

2019 UN8	NEODyS	2300 Jan. 18	2093-2114	10	6.23e-07	-8.48	-8.99	0	Based on 17 optical observations (of which 0 are rejected as outliers) from 2019-10-25.250 to 2019-10-29.505.
	JPL Sentry	1640 Jan. 17	2101-2105	3	4.8359e-07	-8.57	-8.94	0	Computed at 05:31 Jan. 17th Pacific time based on 17 observations spanning 4.2547 days (2019-Oct-25.24937 to 2019-Oct-29.504096). Diameter approximately 0.004 km. from weighted mean H=29.70.
	Assessment postings were noted by A/CC on 17 Jan. & 18 Jan. - References: DOU 2020-B04

2019 SO6	NEODyS	1640 Jan. 10	2077-2109	2	9.57e-09	-8.11	-8.26	0	Based on 23 optical observations (of which 0 are rejected as outliers) from 2019-09-26.296 to 2019-10-06.316.
2019 SO6	An assessment posting was noted by A/CC on 10 Jan. - References: DOU 2020-A110

2017 WT28	NEODyS	1600 Dec. 24	2080-2117	163	3.09e-03	-4.44	-4.49	0	Based on 26 optical observations (of which 0 are rejected as outliers) from 2017-11-28.291 to 2017-12-16.266.
2017 WT28	An assessment posting was noted by A/CC on 24 Dec. - References: no recent MPECs

2017 SA20	NEODyS	1600 Dec. 24	2031-2118	1011	3.2e-04	-5.26	-6.08	0	Based on 34 optical observations (of which 0 are rejected as outliers) from 2017-09-24.415 to 2017-10-15.043.
2017 SA20	An assessment posting was noted by A/CC on 24 Dec. - References: no recent MPECs

2017 LD	NEODyS	1600 Dec. 24	2053-2118	441	2.38e-03	-4.17	-4.74	0	Based on 131 optical observations (of which 0 are rejected as outliers) from 2017-05-16.299 to 2017-06-30.357.
2017 LD	An assessment posting was noted by A/CC on 24 Dec. - References: no recent MPECs

2016 RP41	JPL Sentry	0511 Dec. 27	2022-2114	48	1.54046e-08	-6.24	-6.60	0	Computed at 17:35 April 8th of 2017 Pacific time based on 7 observations spanning .75865 days (2016-Sep-12.51611 to 2016-Sep-13.27476). Diameter approximately 0.110 km. from weighted mean H=22.48.
	NEODyS	2317 Dec. 25	2022-2111	35	7.82e-09	-6.42	-6.56	0	Based on 7 optical observations (of which 0 are rejected as outliers) from 2016-09-12.517 to 2016-09-13.276.
	Assessment postings were noted by A/CC on 25 Dec. & 27 Dec. - References: no recent MPECs

2016 AZ193	JPL Sentry	1500 Dec. 30	2020-2114	494	2.1931625e-06	-6.31	-7.22	0	Computed at 14:28 April 6th of 2017 Pacific time based on 9 observations spanning .15930 days (2016-Jan-03.25638 to 2016-Jan-03.41568). Diameter approximately 0.016 km. from weighted mean H=26.62.
2016 AZ193	An assessment posting was noted by A/CC on 30 Dec. - References: no recent MPECs

2012 HG2	NEODyS	1600 Dec. 24	2052-2119	1454	1.57e-03	-4.06	-4.72	0	Based on 210 optical observations (of which 0 are rejected as outliers) from 2012-04-20.372 to 2012-05-29.351.
2012 HG2	An assessment posting was noted by A/CC on 24 Dec. - References: no recent MPECs

2012 BK14	JPL Sentry	1640 Jan. 17	2021-2117	666	5.33044401e-05	-5.77	-6.89	0	Computed at 12:45 April 7th of 2017 Pacific time based on 11 observations spanning .14854 days (2012-Jan-21.317 to 2012-Jan-21.46554). Diameter approximately 0.009 km. from weighted mean H=27.98.
2012 BK14	An assessment posting was noted by A/CC on 17 Jan. - References: no recent MPECs

2011 ES4	NEODyS	0444 Jan. 12	2031-2115	133	6.27e-05	-4.70	-5.14	0	Based on 47 optical observations (of which 3 are rejected as outliers) from 2011-03-02.199 to 2011-03-06.236.
	JPL Sentry	1720 Jan. 11	2031-2112	75	5.38789188e-05	-4.66	-5.12	0	Computed at 05:58 Jan. 11th Pacific time based on 44 observations spanning 4.0327 days (2011-Mar-02.19847 to 2011-Mar-06.23118). Diameter approximately 0.025 km. from weighted mean H=25.68.
	Assessment postings were noted by A/CC on 11 Jan. & 12 Jan. - References: DOU 2020-A114

2011 BL45	NEODyS	1600 Dec. 24	2050-2117	68	1.33e-04	-5.26	-5.47	0	Based on 25 optical observations (of which 1 are rejected as outliers) from 2011-01-30.345 to 2011-02-12.201.
2011 BL45	An assessment posting was noted by A/CC on 24 Dec. - References: no recent MPECs

2011 AM37	NEODyS	1600 Dec. 24	2048-2118	215	8.7e-03	-4.44	-4.65	0	Based on 19 optical observations (of which 0 are rejected as outliers) from 2011-01-13.331 to 2011-01-16.478.
2011 AM37	An assessment posting was noted by A/CC on 24 Dec. - References: no recent MPECs

2011 AE3	JPL Sentry	1640 Jan. 4	2020-2117	618	5.78232626000001e-05	-5.29	-5.70	0	Computed at 01:02 April 9th of 2017 Pacific time based on 16 observations spanning .04277 days (2011-Jan-04.23829 to 2011-Jan-04.28106). Diameter approximately 0.010 km. from weighted mean H=27.66.
2011 AE3	An assessment posting was noted by A/CC on 4 Jan. - References: no recent MPECs

2010 RF12	NEODyS	1600 Dec. 24	2095-2118	107	6.6e-02	-3.22	-3.22	0	Based on 333 optical observations (of which 1 are rejected as outliers) from 2010-09-03.494 to 2010-09-08.516.
2010 RF12	An assessment posting was noted by A/CC on 24 Dec. - References: no recent MPECs

2010 DG77	JPL Sentry	1905 Jan. 12	2021-2117	566	7.383039e-06	-4.84	-6.27	0	Computed at 09:40 April 7th of 2017 Pacific time based on 10 observations spanning .59543 days (2010-Feb-19.17573 to 2010-Feb-19.77116). Diameter approximately 0.044 km. from weighted mean H=24.47.
2010 DG77	An assessment posting was noted by A/CC on 12 Jan. - References: no recent MPECs

2008 VS4	JPL Sentry	0022 Jan. 23	2021-2114	308	5.751628e-07	-5.56	-6.64	0	Computed at 00:23 April 8th of 2017 Pacific time based on 10 observations spanning .08330 days (2008-Nov-07.413 to 2008-Nov-07.4963). Diameter approximately 0.049 km. from weighted mean H=24.21.
2008 VS4	An assessment posting was noted by A/CC on 23 Jan. - References: no recent MPECs
C L E A R E D
2020 BU3	NEODyS	0720 Jan. 24	R E M O V E D
	JPL Sentry	2000 Jan. 23	R E M O V E D						Risk listing removed at 1947 UTC Jan. 23rd
	Assessment postings were noted by A/CC on 23 Jan. & 24 Jan. - References: MPEC 2020-B92 plus DOU 2020-B94

2020 BD1	NEODyS	0720 Jan. 24	R E M O V E D
	JPL Sentry	2000 Jan. 23	R E M O V E D						Risk listing removed at 1952 UTC Jan. 23rd
	Assessment postings were noted by A/CC on 20 Jan., 23 Jan. & 24 Jan. - References: MPEC 2020-B36 plus DOU 2020-B94

2020 BB1	NEODyS	1700 Jan. 22	R E M O V E D
2020 BB1	Assessment postings were noted by A/CC on 20 Jan. & 22 Jan. - References: MPEC 2020-B35 plus DOU 2020-B72

2020 AP	JPL Sentry	1645 Jan. 5	R E M O V E D						Risk listing removed at 1448 UTC Jan. 5th
2020 AP	Assessment postings were noted by A/CC on 3 Jan. & 5 Jan. - References: MPEC 2020-A47 plus DOU 2020-A63

2020 AK	NEODyS	1710 Jan. 6	R E M O V E D
	JPL Sentry	1640 Jan. 4	R E M O V E D						Risk listing removed at 1358 UTC Jan. 4th
	Assessment postings were noted by A/CC on 2 Jan., 4 Jan. & 6 Jan. - References: MPEC 2020-A33 plus DOUs 2020-A55, 2020-A81, 2020-A86, 2020-A92, 2020-A130, 2020-B37 & 2020-B94

2019 YZ4	JPL Sentry	1640 Jan. 4	R E M O V E D						Risk listing removed at 1355 UTC Jan. 4th
2019 YZ4	Assessment postings were noted by A/CC on 1 Jan. & 4 Jan. - References: MPEC 2020-A08 plus DOUs 2020-A55, 2020-A63 & 2020-A81

2019 YJ3	NEODyS	1730 Dec. 30	R E M O V E D
	JPL Sentry	1500 Dec. 30	R E M O V E D						Risk listing removed at 1357 UTC Dec. 30th
	Assessment postings were noted by A/CC on 28 Dec. & 30 Dec. - References: MPEC 2019-Y106 plus DOUs 2019-Y107, 2019-Y117, 2020-A42, 2020-A55, 2020-A63, 2020-A125, 2020-B11 & 2020-B94

2019 YA2	NEODyS	2250 Jan. 19	R E M O V E D
	JPL Sentry	1635 Jan. 6	R E M O V E D						Risk listing removed at 1435 UTC Jan. 6th
	Assessment postings were noted by A/CC on 25 Dec., 26 Dec., 27 Dec., 28 Dec., 1 Jan., 3 Jan., 5 Jan., 6 Jan., 7 Jan., 8 Jan., 14 Jan. & 19 Jan. - References: DOUs 2019-Y90, 2019-Y95, 2019-Y101, 2020-A06, 2020-A42, 2020-A63, 2020-A81, 2020-A86, 2020-A92, 2020-A125 & 2020-B11

2019 YX1	NEODyS	0100 Jan. 13	R E M O V E D
	JPL Sentry	1720 Jan. 11	R E M O V E D						Risk listing removed at 0730 UTC Jan. 11th
	Assessment postings were noted by A/CC on 24 Dec., 25 Dec., 27 Dec., 28 Dec., 29 Dec., 30 Dec., 2 Jan., 11 Jan. & 13 Jan. - References: DOUs 2019-Y90, 2019-Y101, 2019-Y110, 2020-A27 & 2020-B72, radar: 11 Jan.

2019 YK1	NEODyS	0511 Dec. 27	R E M O V E D
2019 YK1	An assessment posting was noted by A/CC on 27 Dec. - References: DOU 2019-Y95

2019 YE	NEODyS	1545 Jan. 1	R E M O V E D
2019 YE	Assessment postings were noted by A/CC on 24 Dec. & 1 Jan. - References: DOU 2020-A06

2019 XQ2	JPL Sentry	1640 Jan. 4	R E M O V E D						Risk listing removed at 1337 UTC Jan. 4th
2019 XQ2	Assessment postings were noted by A/CC on 2 Jan. & 4 Jan. - References: DOUs 2020-A27, 2020-A55, 2020-A63, 2020-A81, 2020-A86 & 2020-A92

2019 XK	NEODyS	2317 Dec. 25	R E M O V E D
	JPL Sentry	1630 Dec. 25	R E M O V E D						Risk listing removed at 1431 UTC Dec. 25th
	Assessment postings were noted by A/CC on 25 Dec. - References: DOU 2019-Y90

2015 TC25	JPL Sentry	2001 Jan. 13	R E M O V E D						Risk listing removed at 1939 UTC Jan. 13th
2015 TC25	An assessment posting was noted by A/CC on 13 Jan. - References: no recent MPECs

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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