A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During June 2009

Compiled at 2016 UTC on 30 June 2009

<< May 2009 CRT | CRT Archive Index | July 2009 CRT >>

[ Today's risk monitoring & other observing news | object risks cleared in June | 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 MB9JPL Sentry1856 June 302056-210585.8e-09-5.33-5.890Analysis based on 10 observations spanning 1.1849 days (2009-Jun-29.47208 to 2009-Jun-30.65694). Diameter approximately 0.658 km. from mean, weighted H=18.6.
An assessment posting was noted by A/CC on 30 June   -   References: MPEC 2009-M56
2009 MG1NEODyS1734 June 252079-208333.38e-07-5.99-6.230Based on 18 optical observations (of which 0 are rejected as outliers) from 2009/06/21.273 to 2009/06/24.203.
JPL Sentry1734 June 252079-208333.7e-07-5.96-6.210Analysis based on 18 observations spanning 2.9300 days (2009-Jun-21.27223 to 2009-Jun-24.20218). Diameter approximately 0.053 km. from mean, weighted H=24.0.
Assessment postings were noted by A/CC on 23 June, 24 June & 25 June   -   References: MPECs 2009-M29, 2009-M31 & 2009-M35
2009 MUJPL Sentry1734 June 25209612.5e-07-6.58-6.580Analysis based on 88 observations spanning 4.8184 days (2009-Jun-19.30659 to 2009-Jun-24.12497). Diameter approximately 0.042 km. from mean, weighted H=24.5.
Assessment postings were noted by A/CC on 22 June, 23 June, 24 June & 25 June   -   References: MPECs 2009-M19, 2009-M22, 2009-M31 & 2009-M35
2009 LU2JPL Sentry2009 June 302012-2108304.8e-06-3.31-3.470Analysis based on 14 observations spanning 12.058 days (2009-Jun-14.20491 to 2009-Jun-26.262609). Diameter approximately 0.110 km. from mean, weighted H=22.5.
NEODyS1457 June 282012-2089335.19e-06-3.35-3.570Based on 17 optical observations (of which 1 are rejected as outliers) from 2009/06/14.206 to 2009/06/26.263.
Assessment postings were noted by A/CC on 17 June, 28 June & 30 June   -   References: MPECs 2009-M02 & 2009-M44
2009 HCJPL Sentry1333 June 42095-209921.2e-06-6.26-6.280Analysis based on 148 observations spanning 44.903 days (2009-Apr-17.23164 to 2009-Jun-01.13477). Diameter approximately 0.038 km. from mean, weighted H=24.8.
An assessment posting was noted by A/CC on 4 June   -   References: MPEC 2009-L19
2008 AO112JPL Sentry0336 June 262010-2099451.5e-07-4.30-4.620Analysis based on 8 observations spanning 1.0097 days (2008-Jan-11.08899 to 2008-Jan-12.098698). Diameter approximately 0.310 km. from mean, weighted H=20.2.
An assessment posting was noted by A/CC on 26 June   -   References: no recent MPECs
C   L   E   A   R   E   D
2009 MN8JPL Sentry1344 June 30R E M O V E DRisk listing removed at 0849 UTC 30 June
Assessment postings were noted by A/CC on 29 June & 30 June   -   References: MPECs 2009-M48 & 2009-M53
2009 MSJPL Sentry1734 June 25R E M O V E DRisk listing removed at 1650 UTC 25 June
NEODyS1330 June 24R E M O V E D
Assessment postings were noted by A/CC on 23 June, 24 June & 25 June   -   References: MPECs 2009-M18, 2009-M31 & 2009-M35
2009 LW2JPL Sentry1400 June 19R E M O V E DRisk listing removed at 0851 UTC 19 June
NEODyS1400 June 19R E M O V E D
Assessment postings were noted by A/CC on 16 June, 17 June, 18 June & 19 June   -   References: MPECs 2009-M04, 2009-M11, 2009-M14, 2009-M15, 2009-M17, 2009-M22 & 2009-M35
2009 LQ1JPL Sentry1419 June 17R E M O V E DRisk listing removed at 0848 UTC 17 June
NEODyS1419 June 17R E M O V E D
Assessment postings were noted by A/CC on 15 June, 16 June & 17 June   -   References: MPECs 2009-L47, 2009-M07 & 2009-M14
2009 LXNEODyS1401 June 18R E M O V E D
JPL Sentry1401 June 18R E M O V E DRisk listing removed at 0849 UTC 18 June
Assessment postings were noted by A/CC on 13 June, 14 June, 16 June & 18 June   -   References: MPECs 2009-L44, 2009-M01, 2009-M11, 2009-M31 & 2009-M35
2009 LSNEODyS1330 June 16R E M O V E D
JPL Sentry1330 June 16R E M O V E DRisk listing removed at 0851 UTC 16 June
Assessment postings were noted by A/CC on 13 June, 14 June, 15 June & 16 June   -   References: MPECs 2009-L42, 2009-L45, 2009-L46, 2009-M01, 2009-M07, 2009-M11, 2009-M14, 2009-M15, 2009-M17, 2009-M22, 2009-M31 & 2009-M46
2009 KT21NEODyS1525 June 13R E M O V E D
JPL Sentry1525 June 13R E M O V E DRisk listing removed at 0848 UTC 13 June
Assessment postings were noted by A/CC on 1 June, 2 June & 13 June   -   References: MPECs 2009-L02, 2009-L43, 2009-M15 & 2009-M35
2009 KR21JPL Sentry1323 June 1R E M O V E DRisk listing removed at 0851 UTC 1 June
An assessment posting was noted by A/CC on 1 June   -   Reference: MPEC 2009-L01
2009 KK8NEODyS1606 June 20R E M O V E D
JPL Sentry1606 June 20R E M O V E DRisk listing removed at 0849 UTC 20 June
Assessment postings were noted by A/CC on 7 June, 14 June & 20 June   -   References: MPECs 2009-L23, 2009-L45, 2009-M15 & 2009-M35
2009 KN4NEODyS1330 June 16R E M O V E D
JPL Sentry1330 June 16R E M O V E DRisk listing removed at 0850 UTC 16 June
An assessment posting was noted by A/CC on 16 June   -   References: MPECs 2009-M01, 2009-M11, 2009-M31, 2009-M35 & 2009-M46
2009 KL2JPL Sentry1323 June 1R E M O V E DRisk listing removed at 0849 UTC 1 June
An assessment posting was noted by A/CC on 1 June   -   References: MPECs 2009-L01, 2009-L06, 2009-L07, 2009-L19, 2009-L30, 2009-L31, 2009-L40, 2009-L45, 2009-M14, 2009-M15, 2009-M17, 2009-M31, 2009-M35, 2009-M38, 2009-M46 & 2009-M53
2009 KMJPL Sentry1327 June 2R E M O V E DRisk listing removed at 0852 UTC 2 June
An assessment posting was noted by A/CC on 2 June   -   References: MPEC 2009-L06
2009 KKJPL Sentry1419 June 17R E M O V E DRisk listing removed at 0852 UTC 17 June
NEODyS1419 June 17R E M O V E D
Assessment postings were noted by A/CC on 2 June, 3 June, 6 June, 9 June, 10 June & 17 June   -   References: MPECs 2009-L06, 2009-L07, 2009-L22, 2009-L31, 2009-L32, 2009-M07 & 2009-M11
2009 ED27JPL Sentry1704 June 1R E M O V E DRisk listing removed at 1647 UTC 1 June
NEODyS1323 June 1R E M O V E D
Assessment postings were noted by A/CC on 1 June   -   References: no MPECs

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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