A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted during July 2008

Compiled at 2358 UTC on 31 July 2008


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

[ Today's risk monitoring & other observing news | object risks cleared in July | 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 OB9JPL Sentry1922 July 312014-2106486.2e-08-3.03-3.620Analysis based on 12 observations spanning 1.9078 days (2008-Jul-29.34054 to 2008-Jul-31.2483). Diameter approximately 1.241 km. from mean, weighted H=17.2.
An assessment posting was noted by A/CC on 31 July   -   References: MPEC 2008-O64
2008 OP8JPL Sentry1525 July 312035-209233.3e-10-6.24-6.610Analysis based on 20 observations spanning .95670 days (2008-Jul-30.41557 to 2008-Jul-31.37227). Diameter approximately 0.521 km. from mean, weighted H=19.1.
An assessment posting was noted by A/CC on 31 July   -   References: MPEC 2008-O61
2008 OO8JPL Sentry1525 July 312021-2096172.4e-06-5.77-6.330Analysis based on 15 observations spanning .91946 days (2008-Jul-30.37816 to 2008-Jul-31.29762). Diameter approximately 0.030 km. from mean, weighted H=25.2.
An assessment posting was noted by A/CC on 31 July   -   References: MPEC 2008-O60
2008 OT7JPL Sentry0433 July 312085-209832.0e-08-9.01-9.030Analysis based on 19 observations spanning .14927 days (2008-Jul-30.62013 to 2008-Jul-30.7694). Diameter approximately 0.012 km. from mean, weighted H=27.2.
An assessment posting was noted by A/CC on 31 July   -   References: MPEC 2008-O56
2008 OS7NEODyS1352 July 31208719.36e-10-6.81-6.810Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/07/30.246 to 2008/07/30.964.
JPL Sentry0329 July 312069-2108106.8e-09-5.93-6.470Analysis based on 26 observations spanning .71807 days (2008-Jul-30.245 to 2008-Jul-30.96307). Diameter approximately 0.290 km. from mean, weighted H=20.3.
Assessment postings were noted by A/CC on 31 July   -   References: MPEC 2008-O55
2008 OC6NEODyS2002 July 312011-2048159.99e-10-4.74-5.310Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/07/29.462 to 2008/07/30.484.
An assessment posting was noted by A/CC on 31 July   -   References: MPEC 2008-O52
2008 OY2JPL Sentry1447 July 30209111.4e-09-10.28-10.30Analysis based on 27 observations spanning 1.2266 days (2008-Jul-28.73553 to 2008-Jul-29.96211). Diameter approximately 0.011 km. from mean, weighted H=27.4.
Assessment postings were noted by A/CC on 29 July & 30 July   -   References: MPECs 2008-O43 & 2008-O49
2008 OX2NEODyS1524 July 302014-2090241.08e-07-3.88-4.200Based on 16 optical observations (of which 0 are rejected as outliers) from 2008/07/28.426 to 2008/07/29.400.
JPL Sentry1447 July 302016-2108772.0e-07-4.12-4.320Analysis based on 16 observations spanning .97399 days (2008-Jul-28.42552 to 2008-Jul-29.39951). Diameter approximately 0.265 km. from mean, weighted H=20.5.
Assessment postings were noted by A/CC on 29 July & 30 July   -   References: MPECs 2008-O42 & 2008-O49
2008 OO1JPL Sentry1417 July 29210717.8e-07-6.21-6.210Analysis based on 25 observations spanning 2.2057 days (2008-Jul-26.55201 to 2008-Jul-28.75769). Diameter approximately 0.040 km. from mean, weighted H=24.7.
Assessment postings were noted by A/CC on 28 July & 29 July   -   References: MPECs 2008-O37 & 2008-O40
2008 OONEODyS1352 July 312075-208151.99e-07-4.08-4.430Based on 61 optical observations (of which 0 are rejected as outliers) from 2008/07/26.093 to 2008/07/29.313.
JPL Sentry1351 July 312075-2108194.6e-07-3.76-4.360Analysis based on 61 observations spanning 3.2197 days (2008-Jul-26.09211 to 2008-Jul-29.31183). Diameter approximately 0.390 km. from mean, weighted H=19.7.
Assessment postings were noted by A/CC on 27 July, 28 July, 29 July, 30 July & 31 July   -   References: MPECs 2008-O33, 2008-O36, 2008-O40, 2008-O49 & 2008-O57
2008 EA9NEODyS1630 July 22061-2090192.88e-05-6.23-6.540Based on 60 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/04/11.248.
JPL Sentry1344 July 22068-2105112.9e-05-6.22-6.530Analysis based on 59 observations spanning 35.842 days (2008-Mar-06.40551 to 2008-Apr-11.24756). Diameter approximately 0.010 km. from mean, weighted H=27.7.
Assessment postings were noted by A/CC on 2 July   -   References: MPEC 2008-N07
C   L   E   A   R   E   D
2008 NQ3JPL Sentry1437 July 17R E M O V E DRisk listing removed at 0850 UTC 17 July
Assessment postings were noted by A/CC on 16 July & 17 July   -   References: MPECs 2008-N48, 2008-O03, 2008-O20, 2008-O25, 2008-O28 & 2008-O57
2008 NO3JPL Sentry1417 July 29R E M O V E DRisk listing removed at 0849 UTC 29 July
NEODyS1435 July 23R E M O V E D
Assessment postings were noted by A/CC on 16 July, 17 July, 18 July, 23 July, 26 July & 29 July   -   References: MPECs 2008-N46, 2008-O03, 2008-O10, 2008-O20, 2008-O28 & 2008-O40
2008 MV1JPL Sentry1511 July 4R E M O V E DRisk listing removed at 0850 UTC 4 July
NEODyS1511 July 4R E M O V E D
Assessment postings were noted by A/CC on 1 July, 2 July & 4 July   -   References: MPECs 2008-N06, 2008-N13, 2008-N15 & 2008-N34

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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