A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During May 2009

Compiled at 1521 UTC on 31 May 2009

<< April 2009 CRT | CRT Archive Index | June 2009 CRT >>

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

Missing something? Check the archives for objects not under active observation or recent analysis.

Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090, plus (since 22 Jan. 2009) 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 KK8NEODyS1512 May 312017-207322.77e-08-4.47-4.670Based on 27 optical observations (of which 0 are rejected as outliers) from 2009/05/28.435 to 2009/05/30.460.
JPL Sentry2359 May 302017-2087109.8e-08-3.87-4.300Analysis based on 27 observations spanning 2.0249 days (2009-May-28.43417 to 2009-May-30.45911). Diameter approximately 0.625 km. from mean, weighted H=18.7.
Assessment postings were noted by A/CC on 30 May & 31 May   -   References: MPEC 2009-K74
2009 KN4NEODyS1512 May 312077-208861.52e-07-3.71-3.820Based on 23 optical observations (of which 0 are rejected as outliers) from 2009/05/23.784 to 2009/05/29.741.
JPL Sentry1512 May 312077-209272.0e-07-3.59-3.720Analysis based on 23 observations spanning 5.9567 days (2009-May-23.78358 to 2009-May-29.74028). Diameter approximately 0.799 km. from mean, weighted H=18.2.
Assessment postings were noted by A/CC on 26 May, 27 May, 29 May & 31 May   -   References: MPECs 2009-K46, 2009-K54, 2009-K66 & 2009-K77
2009 KL2JPL Sentry1512 May 312016-2108602.3e-08-4.24-4.550Analysis based on 16 observations spanning .94458 days (2009-May-30.0495 to 2009-May-30.99408). Diameter approximately 0.786 km. from mean, weighted H=18.2.
An assessment posting was noted by A/CC on 31 May   -   References: MPECs 2009-K76 & 2009-K77
2009 KMJPL Sentry1319 May 29209114.1e-07-3.87-3.870Analysis based on 61 observations spanning 11.069 days (2009-May-17.26047 to 2009-May-28.3295). Diameter approximately 0.310 km. from mean, weighted H=20.2.
NEODyS1314 May 22R E M O V E D
Assessment postings were noted by A/CC on 18 May, 19 May, 20 May, 21 May, 22 May, 23 May, 24 May, 25 May & 29 May   -   References: MPECs 2009-K10, 2009-K23, 2009-K24, 2009-K27, 2009-K30, 2009-K36, 2009-K44 & 2009-K66
2009 KKJPL Sentry1704 May 30202216.9e-05-1.31-1.311Analysis based on 86 observations spanning 12.033 days (2009-May-17.25987 to 2009-May-29.29258). Diameter approximately 0.270 km. from mean, weighted H=20.5.
NEODyS1534 May 30202216.92e-05-1.31-1.311Based on 86 optical observations (of which 0 are rejected as outliers) from 2009/05/17.261 to 2009/05/29.293.
Assessment postings were noted by A/CC on 18 May, 19 May, 20 May, 21 May, 22 May, 23 May, 24 May, 25 May, 26 May, 27 May, 28 May, 29 May & 30 May   -   References: MPECs 2009-K08, 2009-K23, 2009-K24, 2009-K27, 2009-K30, 2009-K36, 2009-K44, 2009-K45, 2009-K54, 2009-K61, 2009-K66 & 2009-K73
2009 JL2NEODyS1321 May 142057-208548.85e-06-5.59-5.900Based on 53 optical observations (of which 2 are rejected as outliers) from 2009/05/12.387 to 2009/05/13.629.
JPL Sentry2010 May 132057-208548.6e-06-5.60-5.920Analysis based on 52 observations spanning 1.2422 days (2009-May-12.38588 to 2009-May-13.62807). Diameter approximately 0.022 km. from mean, weighted H=26.0.
Assessment postings were noted by A/CC on 13 May & 14 May   -   References: MPECs 2009-J53 & 2009-J55
2009 JF1NEODyS1349 May 6202213.14e-04-3.60-3.600Based on 25 optical observations (of which 0 are rejected as outliers) from 2009/05/04.421 to 2009/05/05.660.
JPL Sentry2000 May 5202213.3e-04-3.59-3.590Analysis based on 25 observations spanning 1.2388 days (2009-May-04.42059 to 2009-May-05.659412). Diameter approximately 0.013 km. from mean, weighted H=27.1.
Assessment postings were noted by A/CC on 5 May & 6 May   -   References: MPEC 2009-J26
2009 JE1JPL Sentry2200 May 52044-210093.3e-08-8.84-8.970Analysis based on 10 observations spanning .06837 days (2009-May-04.36574 to 2009-May-04.43411). Diameter approximately 0.013 km. from mean, weighted H=27.1.
An assessment posting was noted by A/CC on 5 May   -   References: MPEC 2009-J25
2009 HW67NEODyS1337 May 12046-207981.46e-06-6.10-6.450Based on 29 optical observations (of which 0 are rejected as outliers) from 2009/04/27.297 to 2009/05/01.213.
JPL Sentry1337 May 12046-207931.2e-06-6.19-6.520Analysis based on 29 observations spanning 3.9159 days (2009-Apr-27.29601 to 2009-May-01.21192). Diameter approximately 0.020 km. from mean, weighted H=26.1.
Assessment postings were noted by A/CC on 1 May   -   References: MPEC 2009-J01
2009 HCJPL Sentry1319 May 292095-209921.0e-06-6.35-6.380Analysis based on 146 observations spanning 41.139 days (2009-Apr-17.23164 to 2009-May-28.37086). Diameter approximately 0.037 km. from mean, weighted H=24.8.
NEODyS1322 May 20R E M O V E D
Assessment postings were noted by A/CC on 1 May, 2 May, 4 May, 5 May, 12 May, 13 May, 15 May, 16 May, 17 May, 18 May, 20 May, 22 May, 24 May & 29 May   -   References: MPECs 2009-J01, 2009-J10, 2009-J15, 2009-J24, 2009-J50, 2009-J52, 2009-J60, 2009-K03, 2009-K04, 2009-K23, 2009-K27, 2009-K36 & 2009-K66
2009 ED27NEODyS1306 May 212010-2090212.06e-09-2.94-2.970Based on 11 optical observations (of which 0 are rejected as outliers) from 2009/03/15.270 to 2009/03/19.367.
JPL Sentry1306 May 21203121.5e-09-3.90-3.940Analysis based on 11 observations spanning 4.0975 days (2009-Mar-15.26893 to 2009-Mar-19.36638). Diameter approximately 2.700 km. from mean, weighted H=15.5.
Assessment postings were noted by A/CC on 21 May   -   References: MPEC 2009-K24
C   L   E   A   R   E   D
2009 KD5JPL Sentry1319 May 28R E M O V E DRisk listing removed at 0853 UTC 28 May
Assessment postings were noted by A/CC on 27 May & 28 May   -   References: MPECs 2009-K55, 2009-K61, 2009-K66 & 2009-K73
2009 KT4NEODyS1319 May 29R E M O V E D
JPL Sentry1319 May 29R E M O V E DRisk listing removed at 0929 UTC 29 May
Assessment postings were noted by A/CC on 27 May & 29 May   -   References: MPECs 2009-K53, 2009-K66 & 2009-K73
2009 KQ4JPL Sentry1534 May 30R E M O V E DRisk listing removed at 0848 UTC 30 May
NEODyS1534 May 30R E M O V E D
Assessment postings were noted by A/CC on 27 May & 30 May   -   References: MPECs 2009-K51, 2009-K73 & 2009-K77
2009 KG3JPL Sentry1529 May 25R E M O V E DRisk listing removed at 1518 UTC 25 May
An assessment posting was noted by A/CC on 25 May   -   References: MPECs 2009-K42 & 2009-K44   -   Note: 2004 LC2 = 2009 KG3
2009 KE3JPL Sentry1401 May 26R E M O V E DRisk listing removed at 0850 UTC 26 May
NEODyS1400 May 26R E M O V E D
Assessment postings were noted by A/CC on 25 May & 26 May   -   References: MPECs 2009-K41, 2009-K45 & 2009-K66
2009 KC3NEODyS1319 May 29R E M O V E D
JPL Sentry1319 May 29R E M O V E DRisk listing removed at 0850 UTC 29 May
Assessment postings were noted by A/CC on 25 May, 26 May & 29 May   -   References: MPECs 2009-K39, 2009-K45 & 2009-K66
2009 KNNEODyS1322 May 20R E M O V E D
JPL Sentry1322 May 20R E M O V E DRisk listing removed at 0850 UTC 20 May
Assessment postings were noted by A/CC on 18 May, 19 May & 20 May   -   References: MPECs 2009-K11, 2009-K23, 2009-K24, 2009-K27, 2009-K36 & 2009-K77
2009 HF82JPL Sentry1312 May 4R E M O V E DRisk listing removed at 0854 UTC 4 May
NEODyS1312 May 4R E M O V E D
Assessment postings were noted by A/CC on 1 May, 2 May & 4 May   -   References: MPECs 2009-J07, 2009-J15 & 2009-J24
2009 HC82JPL Sentry1349 May 6R E M O V E DRisk listing removed at 0854 UTC 6 May
NEODyS1349 May 6R E M O V E D
Assessment postings were noted by A/CC on 4 May, 5 May & 6 May   -   References: MPECs 2009-J04, 2009-J10, 2009-J15, 2009-J24, 2009-J28, 2009-J41, 2009-J52, 2009-J60, 2009-K36 & 2009-K44
2009 HM73NEODyS1337 May 1R E M O V E D
JPL Sentry1337 May 1R E M O V E DRisk listing removed at 0849 UTC 1 May
Assessment postings were noted by A/CC on 1 May   -   References: MPECs 2009-J01, 2009-J28 & 2009-K77
2009 HV58NEODyS1450 May 10R E M O V E D
JPL Sentry1450 May 10R E M O V E DRisk listing removed at 0850 UTC 10 May
Assessment postings were noted by A/CC on 1 May, 2 May, 4 May, 5 May, 6 May & 10 May   -   References: MPECs 2009-J01, 2009-J10, 2009-J15, 2009-J24, 2009-J28, 2009-J41, 2009-J56, 2009-J60, 2009-K36, 2009-K66 & 2009-K73

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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