A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted in the Last 31 Days

Compiled at 1645 UTC on 31 August 2015

[ 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
2015 PU228JPL Sentry0316 Aug. 31208117.2e-05-1.57-1.571Analysis based on 119 observations spanning 36.699 days (2015-Jul-24.586826 to 2015-Aug-30.285341). Diameter approximately 0.310 km. from mean, weighted H=20.2.
NEODyS2108 Aug. 30208118.67e-05-1.49-1.491Based on 119 optical observations (of which 0 are rejected as outliers) from 2015-07-24.588 to 2015-08-30.286.
Assessment postings were noted by A/CC on 16 Aug., 17 Aug., 18 Aug., 19 Aug., 22 Aug., 23 Aug., 24 Aug., 25 Aug., 26 Aug., 27 Aug., 28 Aug., 30 Aug. & 31 Aug.   -   References: MPEC 2015-P73 plus DOUs 2015-Q02, 2015-Q08, 2015-Q15, 2015-Q26, 2015-Q45, 2015-Q52, 2015-Q60, 2015-Q67, 2015-Q69, 2015-Q70, 2015-Q72 & 2015-Q76
2015 PS228NEODyS1555 Aug. 212078-2114132.7e-05-6.91-7.16n/aBased on 24 optical observations (of which 0 are rejected as outliers) from 2015-08-12.329 to 2015-08-19.516.
JPL Sentry1555 Aug. 212079-208932.3e-06-7.91-8.060Analysis based on 24 observations spanning 7.1874 days (2015-Aug-12.32827 to 2015-Aug-19.515696). Diameter approximately 0.005 km. from mean, weighted H=29.0.
Assessment postings were noted by A/CC on 15 Aug., 17 Aug., 18 Aug., 19 Aug. & 21 Aug.   -   References: MPEC 2015-P71 plus DOUs 2015-Q08, 2015-Q15, 2015-Q26 & 2015-Q38
2015 PL57NEODyS2131 Aug. 222080-2114332.11e-04-4.54-5.0n/aBased on 22 optical observations (of which 0 are rejected as outliers) from 2015-08-10.438 to 2015-08-21.566.
JPL Sentry1700 Aug. 222080-2115313.2e-04-4.35-4.670Analysis based on 22 observations spanning 11.128 days (2015-Aug-10.43723 to 2015-Aug-21.56493). Diameter approximately 0.023 km. from mean, weighted H=25.9.
Assessment postings were noted by A/CC on 13 Aug., 20 Aug., 21 Aug. & 22 Aug.   -   References: MPEC 2015-P48 plus DOUs 2015-Q30, 2015-Q38 & 2015-Q45
2015 NK13NEODyS1645 Aug. 31209611.49e-08-6.08-6.080Based on 234 optical observations (of which 0 are rejected as outliers) from 2015-07-08.543 to 2015-08-31.001.
JPL Sentry1645 Aug. 31209613.7e-10-7.69-7.690Analysis based on 234 observations spanning 53.458 days (2015-Jul-08.542262 to 2015-Aug-30.99988). Diameter approximately 0.240 km. from mean, weighted H=20.8.
Assessment postings were noted by A/CC on 31 July, 4 Aug., 7 Aug., 8 Aug., 10 Aug., 11 Aug., 12 Aug., 13 Aug., 14 Aug., 15 Aug., 16 Aug., 17 Aug., 18 Aug., 19 Aug., 20 Aug., 22 Aug., 23 Aug., 24 Aug., 25 Aug., 26 Aug., 27 Aug., 28 Aug., 30 Aug. & 31 Aug.   -   References: DOUs 2015-O68, 2015-P04, 2015-P10, 2015-P11, 2015-P16, 2015-P22, 2015-P26, 2015-P33, 2015-P45, 2015-P55, 2015-P69, 2015-Q02, 2015-Q08, 2015-Q26, 2015-Q30, 2015-Q45, 2015-Q52, 2015-Q60, 2015-Q67, 2015-Q69, 2015-Q70, 2015-Q72, 2015-Q76 & 2015-Q77
2015 JJJPL Sentry1600 Aug. 25R E M O V E DRisk listing removed at 1538 UTC 25 Aug.
NEODyS1530 Aug. 25211113.82e-06-4.34-4.340Based on 276 optical observations (of which 0 are rejected as outliers) from 2003-05-03.274 to 2015-08-20.215.
Assessment postings were noted by A/CC on 15 Aug., 20 Aug., 23 Aug. & 25 Aug.   -   References: DOUs 2015-P69, 2015-Q30, 2015-Q52 & 2015-Q67
2015 HE1NEODyS2131 Aug. 222098-211031.52e-07-7.93-8.160Based on 36 optical observations (of which 0 are rejected as outliers) from 2015-04-18.307 to 2015-04-20.889.
JPL Sentry1515 Aug. 222098-211021.6e-07-7.91-8.130Analysis based on 36 observations spanning 2.5814 days (2015-Apr-18.30662 to 2015-Apr-20.887987). Diameter approximately 0.013 km. from mean, weighted H=27.0.
Assessment postings were noted by A/CC on 22 Aug.   -   References: DOU 2015-Q45
2013 XK22NEODyS2230 Aug. 142101-211333.47e-05-4.45-4.450Based on 92 optical observations (of which 3 are rejected as outliers) from 2013-12-14.432 to 2015-08-12.578.
JPL Sentry1602 Aug. 14210113.5e-05-4.44-4.440Analysis based on 91 observations spanning 606.15 days (2013-Dec-14.43128 to 2015-Aug-12.577147). Diameter approximately 0.050 km. from mean, weighted H=24.2.
Assessment postings were noted by A/CC on 14 Aug.   -   References: DOU 2015-P55
2008 VB4JPL Sentry0417 Aug. 132030-2103193.0e-08-8.94-9.550Analysis based on 12 observations spanning .11318 days (2008-Nov-06.34423 to 2008-Nov-06.45741). Diameter approximately 0.008 km. from mean, weighted H=28.2.
An assessment posting was noted by A/CC on 13 Aug.   -   References: no recent MPECs
C   L   E   A   R   E   D
2015 QW8JPL Sentry1531 Aug. 27R E M O V E DRisk listing removed at 1500 UTC 27 Aug.
NEODyS1458 Aug. 27R E M O V E D
Assessment postings were noted by A/CC on 23 Aug. & 27 Aug.   -   References: MPEC 2015-Q57 plus DOU 2015-Q70
2015 PR228NEODyS1545 Aug. 20R E M O V E D
JPL Sentry1545 Aug. 20R E M O V E DRisk listing removed at 1500 UTC 20 Aug.
Assessment postings were noted by A/CC on 15 Aug., 17 Aug., 18 Aug., 19 Aug. & 20 Aug.   -   References: MPEC 2015-P72 plus DOUs 2015-Q15, 2015-Q26 & 2015-Q30
2015 PK57NEODyS1500 Aug. 19R E M O V E D
Assessment postings were noted by A/CC on 13 Aug. & 19 Aug.   -   References: MPEC 2015-P47 plus DOUs 2015-Q26, 2015-Q45, 2015-Q52 & 2015-Q69
2015 PR56JPL Sentry1532 Aug. 23R E M O V E DRisk listing removed at 1504 UTC 23 Aug.
NEODyS1532 Aug. 23R E M O V E D
Assessment postings were noted by A/CC on 12 Aug., 13 Aug., 17 Aug., 18 Aug., 19 Aug., 20 Aug., 21 Aug., 22 Aug. & 23 Aug.   -   References: MPEC 2015-P38 plus DOUs 2015-Q08, 2015-Q15, 2015-Q26, 2015-Q30, 2015-Q38, 2015-Q45 & 2015-Q52
2015 OL35NEODyS2142 Aug. 3R E M O V E D
JPL Sentry2142 Aug. 3R E M O V E DRisk listing removed at 1459 UTC 3 Aug.
Assessment postings were noted by A/CC on 3 Aug.   -   References: DOUs 2015-P03, 2015-P11, 2015-P16, 2015-P45, 2015-Q26, 2015-Q45, 2015-Q60, 2015-Q70 & 2015-Q72
2015 OA22JPL Sentry1555 Aug. 21R E M O V E DRisk listing removed at 1458 UTC 21 Aug.
NEODyS1555 Aug. 21R E M O V E D
Assessment postings were noted by A/CC on 21 Aug.   -   References: DOUs 2015-Q38, 2015-Q45 & 2015-Q60
2015 ND3NEODyS1623 Aug. 17R E M O V E D
JPL Sentry1619 Aug. 17R E M O V E DRisk listing removed at 1602 UTC 17 Aug.
Assessment postings were noted by A/CC on 17 Aug.   -   References: DOU 2015-Q08
2013 YF21JPL Sentry1905 Aug. 20R E M O V E DRisk listing removed at 1857 UTC 20 Aug.
An assessment posting was noted by A/CC on 20 Aug.   -   References: no recent MPECs
2013 RE74JPL Sentry1905 Aug. 20R E M O V E DRisk listing removed at 1856 UTC 20 Aug.
An assessment posting was noted by A/CC on 20 Aug.   -   References: no recent MPECs
2001 QJ96JPL Sentry0350 Aug. 18R E M O V E DRisk listing removed at 0347 UTC 18 Aug.
An assessment posting was noted by A/CC on 18 Aug.   -   References: MPEC 2015-Q12

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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