A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During September 2008

Compiled at 2359 UTC on 30 September 2008


<< August 2008 CRT | CRT Archive Index | October 2008 CRT >>

[ Today's risk monitoring & other observing news | object risks cleared in September | Ephemerides for Active Risk-Rated Objects ]

Missing something? Here are 99942 Apophis (2004 MN4) and 144898 2004 VD17. Check the archives for others.

Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) 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
2008 SH148NEODyS1516 Sept. 302011-2087664.42e-07-6.72-7.530Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/09/29.190 to 2008/09/29.292.
JPL Sentry0215 Sept. 302011-21071891.0e-06-6.43-7.120Analysis based on 11 observations spanning .10211 days (2008-Sep-29.18897 to 2008-Sep-29.29108). Diameter approximately 0.020 km. from mean, weighted H=26.1.
Assessment postings were noted by A/CC on 30 Sept.   -   References: MPEC 2008-S91
2008 SE85NEODyS1515 Sept. 302011-20901031.96e-07-3.02-3.270Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/09/28.449 to 2008/09/29.408.
JPL Sentry1515 Sept. 302013-2107396.5e-08-3.72-3.780Analysis based on 20 observations spanning .95911 days (2008-Sep-28.44782 to 2008-Sep-29.40693). Diameter approximately 0.390 km. from mean, weighted H=19.7.
Assessment postings were noted by A/CC on 29 Sept. & 30 Sept.   -   References: MPECs 2008-S89 & 2008-S93
2008 SJ82NEODyS1456 Sept. 28208817.46e-09-6.36-6.360Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/09/26.748 to 2008/09/27.783.
JPL Sentry1456 Sept. 282088-209643.2e-08-5.67-6.070Analysis based on 15 observations spanning 1.0351 days (2008-Sep-26.74755 to 2008-Sep-27.7827). Diameter approximately 0.240 km. from mean, weighted H=20.8.
Assessment postings were noted by A/CC on 27 Sept. & 28 Sept.   -   References: MPECs 2008-S80 & 2008-S83
2008 SH82NEODyS1515 Sept. 302032-2088142.0e-07-4.85-5.400Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/09/29.261.
JPL Sentry2111 Sept. 292032-2106293.0e-07-4.66-5.260Analysis based on 18 observations spanning 3.0472 days (2008-Sep-26.21299 to 2008-Sep-29.26018). Diameter approximately 0.215 km. from mean, weighted H=21.0.
Assessment postings were noted by A/CC on 28 Sept., 29 Sept. & 30 Sept.   -   References: MPECs 2008-S79, 2008-S83 & 2008-S93
2008 SV11NEODyS2249 Sept. 302034-2089139.07e-08-3.41-3.670Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/09/25.263 to 2008/09/30.378.
JPL Sentry2116 Sept. 302009-2085111.4e-07-3.00-3.330Analysis based on 44 observations spanning 5.1147 days (2008-Sep-25.26245 to 2008-Sep-30.37718). Diameter approximately 0.756 km. from mean, weighted H=18.3.
Assessment postings were noted by A/CC on 26 Sept., 27 Sept., 29 Sept. & 30 Sept.   -   References: MPECs 2008-S65, 2008-S85 & 2008-S93
2008 ST7NEODyS1515 Sept. 302050-208994.18e-06-5.08-5.410Based on 51 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/09/29.327.
JPL Sentry1515 Sept. 302073-2102472.7e-05-4.37-5.100Analysis based on 48 observations spanning 5.0264 days (2008-Sep-24.29993 to 2008-Sep-29.32635). Diameter approximately 0.053 km. from mean, weighted H=24.0.
Assessment postings were noted by A/CC on 25 Sept., 26 Sept., 27 Sept., 29 Sept. & 30 Sept.   -   References: MPECs 2008-S56, 2008-S69, 2008-S85 & 2008-S93
2008 STNEODyS1445 Sept. 272047-2082122.9e-05-5.91-6.070Based on 31 optical observations (of which 0 are rejected as outliers) from 2008/09/22.162 to 2008/09/26.045.
JPL Sentry1445 Sept. 272047-2108246.9e-05-5.62-6.050Analysis based on 31 observations spanning 3.8835 days (2008-Sep-22.16113 to 2008-Sep-26.04466). Diameter approximately 0.013 km. from mean, weighted H=27.1.
Assessment postings were noted by A/CC on 22 Sept., 23 Sept., 25 Sept. & 27 Sept.   -   References: MPECs 2008-S33, 2008-S36, 2008-S51 & 2008-S69
2008 KN11NEODyS1931 Sept. 30204612.32e-07-5.62-5.620Based on 132 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/21.154.
Assessment postings were noted by A/CC on 22 Sept. & 30 Sept.   -   References: no MPECs
2006 CDJPL Sentry1759 Sept. 172015-2094583.1e-08-5.30-5.970Analysis based on 12 observations spanning 1.9971 days (2006-Feb-01.1555 to 2006-Feb-03.15263). Diameter approximately 0.213 km. from mean, weighted H=21.0.
An assessment posting was noted by A/CC on 17 Sept.   -   References: no recent MPECs
C   L   E   A   R   E   D
2008 SU1JPL Sentry1514 Sept. 25R E M O V E DRisk listing removed at 0852 UTC 25 Sept.
NEODyS1514 Sept. 25R E M O V E D
Assessment postings were noted by A/CC on 24 Sept. & 25 Sept.   -   References: MPECs 2008-S42, 2008-S51, 2008-S63, 2008-S69 & 2008-S85
2008 SRJPL Sentry1353 Sept. 23R E M O V E DRisk listing removed at 0849 UTC 23 Sept.
Assessment postings were noted by A/CC on 22 Sept. & 23 Sept.   -   References: MPECs 2008-S31, 2008-S36, 2008-S45 & 2008-S63
2008 SOJPL Sentry1353 Sept. 23R E M O V E DRisk listing removed at 0849 UTC 23 Sept.
Assessment postings were noted by A/CC on 22 Sept. & 23 Sept.   -   References: MPECs 2008-S28, 2008-S36, 2008-S45, 2008-S51, 2008-S69 & 2008-S93
2008 RM98NEODyS1445 Sept. 27R E M O V E D
JPL Sentry1445 Sept. 27R E M O V E DRisk listing removed at 0851 UTC 27 Sept.
Assessment postings were noted by A/CC on 26 Sept. & 27 Sept.   -   References: MPECs 2008-S61 & 2008-S69
2008 RJ1NEODyS1702 Sept. 10R E M O V E D
JPL Sentry1702 Sept. 10R E M O V E DRisk listing removed at 0849 UTC 10 Sept.
Assessment postings were noted by A/CC on 5 Sept., 6 Sept., 7 Sept. & 10 Sept.   -   References: MPECs 2008-R28, 2008-R32, 2008-R55, 2008-R61, 2008-S13, 2008-S19, 2008-S20, 2008-S45, 2008-S63 & 2008-S93
2008 RH1NEODyS1627 Sept. 7R E M O V E D
Assessment postings were noted by A/CC on 6 Sept. & 7 Sept.   -   References: MPECs 2008-R27, 2008-R32, 2008-R35, 2008-R64, 2008-S03, 2008-S12, 2008-S13, 2008-S45, 2008-S51, 2008-S63, 2008-S85 & 2008-S93
2008 RG1NEODyS1627 Sept. 7R E M O V E D
JPL Sentry1627 Sept. 7R E M O V E DRisk listing removed at 0852 UTC 7 Sept.
Assessment postings were noted by A/CC on 5 Sept., 6 Sept. & 7 Sept.   -   References: MPECs 2008-R26, 2008-R32, 2008-R35, 2008-R64, 2008-S01, 2008-S19, 2008-S20, 2008-S45 & 2008-S93
2008 RVJPL Sentry1348 Sept. 6R E M O V E DRisk listing removed at 0850 UTC 6 Sept.
Assessment postings were noted by A/CC on 4 Sept. & 6 Sept.   -   References: MPECs 2008-R18, 2008-R31, 2008-R32, 2008-R55, 2008-R61, 2008-S13, 2008-S19, 2008-S36, 2008-S69 & 2008-S83
2008 OOJPL Sentry1448 Sept. 2R E M O V E DRisk listing removed at 0852 UTC 2 Sept.
An assessment posting was noted by A/CC on 2 Sept.   -   References: MPECs 2008-R10 & 2008-R15
2008 LANEODyS1445 Sept. 27R E M O V E D
JPL Sentry1445 Sept. 27R E M O V E DRisk listing removed at 0851 UTC 27 Sept.
Assessment postings were noted by A/CC on 27 Sept.   -   References: MPEC 2008-S69

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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