A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During October 2009

Compiled at 2359 UTC on 31 October 2009

<< September 2009 CRT | CRT Archive Index | November 2009 CRT >>

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

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 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
2009 TD17NEODyS1533 Oct. 222039-2090607.05e-05-5.44-5.550Based on 19 optical observations (of which 0 are rejected as outliers) from 2009/10/09.328 to 2009/10/11.330.
JPL Sentry2130 Oct. 212039-2096518.9e-05-5.31-5.360Analysis based on 19 observations spanning 2.0022 days (2009-Oct-09.32683 to 2009-Oct-11.329). Diameter approximately 0.010 km. from mean, weighted H=27.7.
Assessment postings were noted by A/CC on 21 Oct. & 22 Oct.   -   References: MPEC 2009-U61
2009 TM8JPL Sentry2202 Oct. 202079-21091076.6e-05-6.26-7.380Analysis based on 48 observations spanning 2.2516 days (2009-Oct-15.2109 to 2009-Oct-17.46255). Diameter approximately 0.007 km. from mean, weighted H=28.6.
NEODyS1543 Oct. 182079-2089164.76e-06-7.33-7.950Based on 48 optical observations (of which 0 are rejected as outliers) from 2009/10/15.212 to 2009/10/17.463.
Assessment postings were noted by A/CC on 15 Oct., 16 Oct., 17 Oct., 18 Oct. & 20 Oct.   -   References: MPECs 2009-T65, 2009-U01, 2009-U15 & 2009-U26
2009 TH8JPL Sentry2000 Oct. 202068-210049.1e-06-5.18-5.300Analysis based on 41 observations spanning 3.9348 days (2009-Oct-14.54405 to 2009-Oct-18.47885). Diameter approximately 0.036 km. from mean, weighted H=24.9.
NEODyS1543 Oct. 18R E M O V E D
Assessment postings were noted by A/CC on 15 Oct., 16 Oct., 17 Oct., 18 Oct., 19 Oct. & 20 Oct.   -   References: MPECs 2009-T62, 2009-U15, 2009-U26 & 2009-U36
2009 TUNEODyS1315 Oct. 23208632.15e-05-5.88-6.320Based on 58 optical observations (of which 1 are rejected as outliers) from 2009/10/10.191 to 2009/10/18.464.
JPL Sentry1315 Oct. 232086-209552.2e-05-5.87-6.320Analysis based on 57 observations spanning 8.2739 days (2009-Oct-10.18978 to 2009-Oct-18.463635). Diameter approximately 0.011 km. from mean, weighted H=27.4.
Assessment postings were noted by A/CC on 10 Oct., 11 Oct., 12 Oct., 13 Oct., 14 Oct., 15 Oct., 17 Oct. & 23 Oct.   -   References: MPECs 2009-T34, 2009-T35, 2009-T38, 2009-T40, 2009-T49, 2009-T55, 2009-U15 & 2009-U69
2009 TBNEODyS1735 Oct. 52014-2075371.48e-05-6.25-6.970Based on 12 optical observations (of which 0 are rejected as outliers) from 2009/10/02.207 to 2009/10/02.314.
An assessment posting was noted by A/CC on 5 Oct.   -   References: MPEC 2009-T07
2006 SF281JPL Sentry0306 Oct. 102014-21053321.6e-06-6.21-8.110Analysis based on 16 observations spanning .02717 days (2006-Sep-30.48927 to 2006-Sep-30.51644). Diameter approximately 0.020 km. from mean, weighted H=26.2.
An assessment posting was noted by A/CC on 10 Oct.   -   References: no recent MPECs
99942 Apophis (2004 MN4)NEODyS0453 Oct. 82036-210367.36e-06-2.97-3.080Based on 1399 optical observations (of which 5 are rejected as outliers) from 2004/03/15.127 to 2008/01/09.666 and also on seven radar data points on 2005/01/27, 2005/01/29, 2005/01/31, 2005/08/07 and 2006/05/06.
JPL Sentry0253 Oct. 82036-210367.4e-06-2.97-3.080Analysis based on 2 radar delay, 5 Doppler, and 633 optical observations spanning 1395.6 days (2004-Mar-15.10789 to 2008-Jan-09.665088). Diameter approximately 0.270 km. from mean, weighted H=19.7.
Assessment postings were noted by A/CC on 8 Oct.   -   References: MPEC 2009-T16
C   L   E   A   R   E   D
2009 UZ87JPL Sentry1409 Oct. 30R E M O V E DRisk listing removed at 0953 UTC 30 Oct.
Assessment postings were noted by A/CC on 28 Oct. & 30 Oct.   -   References: MPECs 2009-U122, 2009-U128 & 2009-U140
2009 UY87JPL Sentry1409 Oct. 30R E M O V E DRisk listing removed at 0950 UTC 30 Oct.
NEODyS1406 Oct. 30R E M O V E D
Assessment postings were noted by A/CC on 27 Oct., 28 Oct. & 30 Oct.   -   References: MPECs 2009-U121, 2009-U128 & 2009-U140
2009 UV87NEODyS1509 Oct. 29R E M O V E D
JPL Sentry1509 Oct. 29R E M O V E DRisk listing removed at 0849 UTC 29 Oct.
Assessment postings were noted by A/CC on 27 Oct., 28 Oct. & 29 Oct.   -   References: MPECs 2009-U118, 2009-U125 & 2009-U140
2009 UL20JPL Sentry1323 Oct. 27R E M O V E DRisk listing removed at 0850 UTC 27 Oct.
Assessment postings were noted by A/CC on 26 Oct. & 27 Oct.   -   References: MPECs 2009-U105, 2009-U112 & 2009-U124
2009 UW18NEODyS1347 Oct. 26R E M O V E D
JPL Sentry1347 Oct. 26R E M O V E DRisk listing removed at 0852 UTC 26 Oct.
Assessment postings were noted by A/CC on 24 Oct., 25 Oct. & 26 Oct.   -   References: MPECs 2009-U75, 2009-U103, 2009-U112, 2009-U128 & 2009-U140
2009 UV18JPL Sentry1323 Oct. 27R E M O V E DRisk listing removed at 0847 UTC 27 Oct.
NEODyS1347 Oct. 26R E M O V E D
Assessment postings were noted by A/CC on 24 Oct., 25 Oct., 26 Oct. & 27 Oct.   -   References: MPECs 2009-U74, 2009-U91, 2009-U103, 2009-U112, 2009-U124, 2009-U127 & 2009-U140
2009 UK14JPL Sentry1315 Oct. 23R E M O V E DRisk listing removed at 1031 UTC 23 Oct.
Assessment postings were noted by A/CC on 22 Oct. & 23 Oct.   -   References: MPECs 2009-U66, 2009-U69, 2009-U73, 2009-U112 & 2009-U140
2009 UN3NEODyS1544 Oct. 31R E M O V E D
JPL Sentry2358 Oct. 30R E M O V E DRisk listing removed at 2348 UTC 30 Oct.
Assessment postings were noted by A/CC on 20 Oct., 21 Oct., 22 Oct., 23 Oct., 25 Oct., 30 Oct. & 31 Oct.   -   References: MPECs 2009-U52, 2009-U56, 2009-U62, 2009-U69, 2009-U91 & 2009-U140
2009 UF2NEODyS1315 Oct. 23R E M O V E D
JPL Sentry1315 Oct. 23R E M O V E DRisk listing removed at 1029 UTC 23 Oct.
Assessment postings were noted by A/CC on 19 Oct., 20 Oct., 21 Oct., 22 Oct. & 23 Oct.   -   References: MPECs 2009-U39, 2009-U50, 2009-U56, 2009-U62, 2009-U69, 2009-U91 & 2009-U112
2009 UD2JPL Sentry1501 Oct. 20R E M O V E DRisk listing removed at 1034 UTC 20 Oct.
Assessment postings were noted by A/CC on 19 Oct. & 20 Oct.   -   References: MPECs 2009-U37, 2009-U50, 2009-U62, 2009-U69, 2009-U73, 2009-U91, 2009-U103 & 2009-U112
2009 UKNEODyS1327 Oct. 19R E M O V E D
JPL Sentry1327 Oct. 19R E M O V E DRisk listing removed at 1034 UTC 19 Oct.
Assessment postings were noted by A/CC on 17 Oct., 18 Oct. & 19 Oct.   -   References: MPECs 2009-U18, 2009-U26, 2009-U36, 2009-U50, 2009-U62, 2009-U103 & 2009-U112
2009 UEJPL Sentry2000 Oct. 20R E M O V E DRisk listing removed at 1951 UTC 20 Oct.
NEODyS1543 Oct. 18R E M O V E D
Assessment postings were noted by A/CC on 16 Oct., 17 Oct., 18 Oct. & 20 Oct.   -   References: MPECs 2009-U11, 2009-U26, 2009-U69 & 2009-U73
2009 UDNEODyS1543 Oct. 18R E M O V E D
JPL Sentry1528 Oct. 17R E M O V E DRisk listing removed at 0933 UTC 17 Oct.
Assessment postings were noted by A/CC on 16 Oct., 17 Oct. & 18 Oct.   -   References: MPECs 2009-U10, 2009-U15, 2009-U26, 2009-U36, 2009-U50, 2009-U56, 2009-U62 & 2009-U69
2009 UBNEODyS1327 Oct. 19R E M O V E D
JPL Sentry1327 Oct. 19R E M O V E DRisk listing removed at 1047 UTC 19 Oct.
Assessment postings were noted by A/CC on 16 Oct., 17 Oct. & 19 Oct.   -   References: MPECs 2009-U08 & 2009-U36
2009 TG10JPL Sentry1404 Oct. 22R E M O V E DRisk listing removed at 0949 UTC 22 Oct.
Assessment postings were noted by A/CC on 21 Oct. & 22 Oct.   -   References: MPECs 2009-U06, 2009-U62, 2009-U69 & 2009-U103
2009 TE10NEODyS1501 Oct. 20R E M O V E D
JPL Sentry1501 Oct. 20R E M O V E DRisk listing removed at 1035 UTC 20 Oct.
Assessment postings were noted by A/CC on 16 Oct., 17 Oct., 18 Oct. & 20 Oct.   -   References: MPECs 2009-U04, 2009-U26 & 2009-U50
2009 TQ8NEODyS1501 Oct. 20R E M O V E D
JPL Sentry1501 Oct. 20R E M O V E DRisk listing removed at 1035 UTC 20 Oct.
Assessment postings were noted by A/CC on 15 Oct., 16 Oct., 19 Oct. & 20 Oct.   -   References: MPECs 2009-T69, 2009-U36, 2009-U50 & 2009-U56
2009 TO8JPL Sentry1501 Oct. 20R E M O V E DRisk listing removed at 1031 UTC 20 Oct.
Assessment postings were noted by A/CC on 15 Oct. & 20 Oct.   -   References: MPECs 2009-T67, 2009-U26, 2009-U50, 2009-U56, 2009-U69, 2009-U73 & 2009-U140
2009 TG8NEODyS1327 Oct. 19R E M O V E D
JPL Sentry1327 Oct. 19R E M O V E DRisk listing removed at 1029 UTC 19 Oct.
Assessment postings were noted by A/CC on 15 Oct., 16 Oct. & 19 Oct.   -   References: MPECs 2009-T61, 2009-U36, 2009-U50 & 2009-U140
2009 TC8JPL Sentry1404 Oct. 22R E M O V E DRisk listing removed at 0949 UTC 22 Oct.
NEODyS1501 Oct. 20R E M O V E D
Assessment postings were noted by A/CC on 15 Oct., 16 Oct., 19 Oct., 20 Oct. & 22 Oct.   -   References: MPECs 2009-T58, 2009-U36, 2009-U50, 2009-U62, 2009-U73 & 2009-U91
2009 TS7NEODyS1501 Oct. 20R E M O V E D
JPL Sentry1501 Oct. 20R E M O V E DRisk listing removed at 0951 UTC 20 Oct.
Assessment postings were noted by A/CC on 15 Oct., 17 Oct. & 20 Oct.   -   References: MPECs 2009-T54, 2009-U15, 2009-U50, 2009-U62 & 2009-U91
2009 TB3JPL Sentry1528 Oct. 17R E M O V E DRisk listing removed at 0849 UTC 17 Oct.
NEODyS1401 Oct. 16R E M O V E D
Assessment postings were noted by A/CC on 13 Oct., 14 Oct., 15 Oct., 16 Oct. & 17 Oct.   -   References: MPECs 2009-T41, 2009-T49, 2009-T55, 2009-U01, 2009-U15, 2009-U26, 2009-U69, 2009-U73 & 2009-U125
2009 TTNEODyS1601 Oct. 12R E M O V E D
JPL Sentry1601 Oct. 12R E M O V E DRisk listing removed at 0850 UTC 12 Oct.
Assessment postings were noted by A/CC on 10 Oct., 11 Oct. & 12 Oct.   -   References: MPECs 2009-T33, 2009-T38, 2009-T40, 2009-T49, 2009-T55, 2009-U01, 2009-U15 & 2009-U50
2009 TJNEODyS1407 Oct. 9R E M O V E D
JPL Sentry1407 Oct. 9R E M O V E DRisk listing removed at 0850 UTC 9 Oct.
Assessment postings were noted by A/CC on 8 Oct. & 9 Oct.   -   References: MPECs 2009-T23, 2009-T28, 2009-T29, 2009-T35 & 2009-T40
2009 SD229JPL Sentry1631 Oct. 10R E M O V E DRisk listing removed at 0849 UTC 10 Oct.
NEODyS0800 Oct. 10R E M O V E D
Assessment postings were noted by A/CC on 1 Oct. & 10 Oct.   -   References: MPECs 2009-T01, 2009-T29, 2009-T35, 2009-U15 & 2009-U124
2009 SC229NEODyS1521 Oct. 2R E M O V E D
JPL Sentry1521 Oct. 2R E M O V E DRisk listing removed at 0849 UTC 2 Oct.
Assessment postings were noted by A/CC on 1 Oct. & 2 Oct.   -   References: MPECs 2009-T01, 2009-T02, 2009-T05, 2009-T16, 2009-T28, 2009-U01, 2009-U36, 2009-U50 & 2009-U103
2009 SP171NEODyS1402 Oct. 1R E M O V E D
JPL Sentry1402 Oct. 1R E M O V E DRisk listing removed at 0931 UTC 1 Oct.
Assessment postings were noted by A/CC on 1 Oct.   -   References: MPECs 2009-T01, 2009-T02, 2009-T16, 2009-T28, 2009-T29, 2009-U01 & 2009-U124
2009 SK104JPL Sentry1631 Oct. 10R E M O V E DRisk listing removed at 0849 UTC 10 Oct.
NEODyS0800 Oct. 10R E M O V E D
Assessment postings were noted by A/CC on 1 Oct. & 10 Oct.   -   References: MPECs 2009-T01 & 2009-T29
2009 ST103JPL Sentry1402 Oct. 1R E M O V E DRisk listing removed at 0850 UTC 1 Oct.
An assessment posting was noted by A/CC on 1 Oct.   -   References: MPECs 2009-T01, 2009-T02, 2009-T05, 2009-T15, 2009-T16, 2009-T24, 2009-T55, 2009-U36, 2009-U62 & 2009-U125
2009 SM98NEODyS1651 Oct. 11R E M O V E D
JPL Sentry1651 Oct. 11R E M O V E DRisk listing removed at 0850 UTC 11 Oct.
Assessment postings were noted by A/CC on 1 Oct., 10 Oct. & 11 Oct.   -   References: MPECs 2009-T01, 2009-T29, 2009-T35 & 2009-T40
2009 SG18NEODyS1521 Oct. 2R E M O V E D
JPL Sentry1402 Oct. 1R E M O V E DRisk listing removed at 0850 UTC 1 Oct.
Assessment postings were noted by A/CC on 1 Oct. & 2 Oct.   -   References: MPECs 2009-T01, 2009-T02, 2009-T15, 2009-T28, 2009-T49, 2009-U50 & 2009-U125

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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