A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During April 2008

Compiled at 2346 UTC on 30 April 2008


<< March 2008 CRT | CRT Archive Index | May 2008 CRT >>

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

Something missing? 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 HR3JPL Sentry2345 April 302022-2106192.1e-07-6.36-6.810Analysis based on 12 observations spanning 1.0021 days (2008-Apr-29.27703 to 2008-Apr-30.2791). Diameter approximately 0.037 km. from mean, weighted H=24.8.
Assessment postings were noted by A/CC on 30 April   -   References: MPEC 2008-H54
2008 HE3NEODyS2346 April 302013-202846.79e-11-5.61-5.720Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/04/28.264 to 2008/04/29.262.
JPL Sentry1727 April 292014-202523.1e-10-4.75-4.910Analysis based on 20 observations spanning .99800 days (2008-Apr-28.263 to 2008-Apr-29.261). Diameter approximately 0.900 km. from mean, weighted H=17.9.
Assessment postings were noted by A/CC on 29 April & 30 April   -   References: MPEC 2008-H49
2008 HD3NEODyS1045 April 302017-2090321.66e-08-4.41-4.840Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/04/28.265 to 2008/04/29.981.
JPL Sentry1044 April 302020-2104271.5e-08-4.52-4.940Analysis based on 20 observations spanning 1.7154 days (2008-Apr-28.26455 to 2008-Apr-29.97995). Diameter approximately 0.420 km. from mean, weighted H=19.5.
Assessment postings were noted by A/CC on 29 April & 30 April   -   References: MPEC 2008-H47 plus DOU 2008-H52
2008 HLNEODyS1235 April 272025-207584.68e-09-5.58-6.060Based on 23 optical observations (of which 0 are rejected as outliers) from 2008/04/25.462 to 2008/04/26.480.
Assessment postings were noted by A/CC on 27 April   -   References: MPEC 2008-H32
2008 HJNEODyS1954 April 292077-208123.76e-05-5.01-5.060Based on 66 optical observations (of which 0 are rejected as outliers) from 2008/04/24.248 to 2008/04/28.590.
JPL Sentry1727 April 292077-2106201.6e-04-4.47-4.960Analysis based on 66 observations spanning 4.3423 days (2008-Apr-24.24725 to 2008-Apr-28.58953). Diameter approximately 0.026 km. from mean, weighted H=25.6.
Assessment postings were noted by A/CC on 25 April, 26 April, 27 April, 28 April & 29 April   -   References: MPEC 2008-H26 plus DOUs 2008-H33, 2008-H34 & 2008-H48
2008 GY21NEODyS1408 April 152038-2086119.22e-08-8.30-8.770Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/04/13.269 to 2008/04/14.327.
JPL Sentry1959 April 142038-2099211.4e-07-8.10-8.710Analysis based on 20 observations spanning 1.0578 days (2008-Apr-13.26806 to 2008-Apr-14.32589). Diameter approximately 0.010 km. from mean, weighted H=27.6.
Assessment postings were noted by A/CC on 14 April & 15 April   -   References: MPEC 2008-G80
2008 GM2NEODyS1408 April 152063-2090129.55e-07-8.00-8.300Based on 54 optical observations (of which 0 are rejected as outliers) from 2008/04/06.414 to 2008/04/14.259.
JPL Sentry1407 April 152063-2108431.8e-05-6.82-7.500Analysis based on 54 observations spanning 7.8454 days (2008-Apr-06.41278 to 2008-Apr-14.25814). Diameter approximately 0.007 km. from mean, weighted H=28.4.
Assessment postings were noted by A/CC on 8 April, 9 April, 11 April, 12 April, 13 April, 14 April & 15 April   -   References: MPEC 2008-G41 plus DOUs 2008-G46, 2008-G65, 2008-G68, 2008-G74, 2008-G77 & 2008-G83
2008 FF5NEODyS1224 April 26206013.51e-07-4.92-4.920Based on 52 optical observations (of which 0 are rejected as outliers) from 2008/03/28.323 to 2008/04/08.172.
JPL Sentry1224 April 26206013.6e-07-4.91-4.910Analysis based on 52 observations spanning 10.849 days (2008-Mar-28.32219 to 2008-Apr-08.17156). Diameter approximately 0.081 km. from mean, weighted H=23.1.
Assessment postings were noted by A/CC on 31 March, 1 April, 2 April, 4 April, 5 April, 6 April, 8 April & 26 April   -   References: DOUs 2008-F58, 2008-G02, 2008-G11, 2008-G20, 2008-G25, 2008-G30 & 2008-H28
2008 EA9NEODyS1224 April 262061-2089203.79e-05-6.11-6.600Based on 59 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/04/03.267.
JPL Sentry1224 April 262068-210382.5e-05-6.32-6.860Analysis based on 58 observations spanning 27.860 days (2008-Mar-06.40551 to 2008-Apr-03.26595). Diameter approximately 0.010 km. from mean, weighted H=27.7.
Assessment postings were noted by A/CC on 31 March, 1 April, 2 April & 26 April   -   References: DOUs 2008-F58, 2008-G02, 2008-G11 & 2008-H28
2008 ER7JPL Sentry2139 April 252077-210269.7e-07-3.66-4.080Analysis based on 90 observations spanning 48.805 days (2008-Mar-06.33608 to 2008-Apr-24.140763). Diameter approximately 0.320 km. from mean, weighted H=20.1.
NEODyS1215 April 252073-208664.4e-07-3.93-4.140Based on 90 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/04/24.142.
Assessment postings were noted by A/CC on 31 March, 2 April, 3 April, 4 April, 5 April, 9 April, 13 April, 14 April, 16 April & 25 April   -   References: DOUs 2008-F58, 2008-G11, 2008-G16, 2008-G20, 2008-G25, 2008-G74, 2008-H01 & 2008-H25
2008 EX5NEODyS1409 April 102056-2090216.24e-05-3.82-4.090Based on 66 optical observations (of which 1 are rejected as outliers) from 2008/03/04.396 to 2008/04/06.134.
JPL Sentry1408 April 102062-207266.0e-06-4.80-5.230Analysis based on 65 observations spanning 32.738 days (2008-Mar-04.39523 to 2008-Apr-06.132868). Diameter approximately 0.059 km. from mean, weighted H=23.8.
Assessment postings were noted by A/CC on 10 April   -   References: DOU 2008-G61
2008 DBJPL Sentry1755 April 82046-2108315.6e-05-4.68-4.770Analysis based on 63 observations spanning 24.274 days (2008-Feb-18.242 to 2008-Mar-13.516061). Diameter approximately 0.025 km. from mean, weighted H=25.7.
NEODyS1459 April 62046-2090234.19e-05-4.79-4.860Based on 64 optical observations (of which 2 are rejected as outliers) from 2008/02/18.243 to 2008/03/13.517.
Assessment postings were noted by A/CC on 6 April & 8 April   -   References: DOU 2008-G30
2008 AF4NEODyS1731 April 24208917.85e-09-5.76-5.760Based on 604 optical observations (of which 4 are rejected as outliers) from 2008/01/10.397 to 2008/04/23.114.
JPL Sentry1048 April 242089-210065.7e-06-2.95-3.070Analysis based on 600 observations spanning 103.72 days (2008-Jan-10.39652 to 2008-Apr-23.113051). Diameter approximately 0.390 km. from mean, weighted H=19.7.
Assessment postings were noted by A/CC on 4 April, 5 April, 8 April & 24 April   -   References: DOUs 2008-G20, 2008-G25 & 2008-H22
2007 VD8JPL Sentry2139 April 252023-2107733.1e-07-7.74-8.690Analysis based on 11 observations spanning .11380 days (2007-Nov-05.31632 to 2007-Nov-05.43012). Diameter approximately 0.010 km. from mean, weighted H=27.7.
Assessment postings were noted by A/CC on 25 April   -   References: no recent MPECs
2007 UW1JPL Sentry2158 April 82048-2107917.6e-05-3.40-4.270Analysis based on 32 observations spanning 7.0807 days (2007-Oct-17.44246 to 2007-Oct-24.52312). Diameter approximately 0.097 km. from mean, weighted H=22.7.
Assessment postings were noted by A/CC on 8 April   -   References: no recent MPECs
2004 FU162JPL Sentry0024 April 262009-21048206.2e-05-5.43-6.370Analysis based on 4 observations spanning .03055 days (2004-Mar-31.27744 to 2004-Mar-31.30799). Diameter approximately 0.006 km. from mean, weighted H=28.9.
Assessment postings were noted by A/CC on 26 April   -   References: no recent MPECs
2001 HJ31JPL Sentry0309 April 9209811.1e-09-8.58-8.580Analysis based on 25 observations spanning 4.0436 days (2001-Apr-26.24716 to 2001-Apr-30.29076). Diameter approximately 0.063 km. from mean, weighted H=23.7.
Assessment postings were noted by A/CC on 9 April   -   References: no recent MPECs
1999 SF10JPL Sentry2056 April 82080-210541.5e-06-5.82-6.210Analysis based on 49 observations spanning 9.2651 days (1999-Sep-30.16385 to 1999-Oct-09.42891). Diameter approximately 0.053 km. from mean, weighted H=24.0.
Assessment postings were noted by A/CC on 8 April   -   References: no recent MPECs
C   L   E   A   R   E   D
2008 HHNEODyS1234 April 27R E M O V E D
JPL Sentry1234 April 27R E M O V E DRisk listing removed at 0947 UTC 27 April
Assessment postings were noted by A/CC on 24 April, 25 April, 26 April & 27 April   -   References: MPEC 2008-H24 plus DOUs 2008-H25, 2008-H28, 2008-H33 & 2008-H34
2008 HGJPL Sentry2139 April 25R E M O V E DRisk listing removed at 1655 UTC 25 April
Assessment postings were noted by A/CC on 24 April & 25 April   -   References: MPEC 2008-H23 plus DOUs 2008-H25, 2008-H28, 2008-H33, 2008-H34, 2008-H48 & 2008-H52
2008 HENEODyS1214 April 25R E M O V E D
JPL Sentry1048 April 24R E M O V E DRisk listing removed at 0920 UTC 24 April
Assessment postings were noted by A/CC on 22 April, 23 April, 24 April & 25 April   -   References: MPEC 2008-H12 plus DOUs 2008-H13, 2008-H21, 2008-H22, 2008-H25, 2008-H33 & 2008-H48
2008 GH110JPL Sentry1422 April 17R E M O V E DRisk listing removed at 0944 UTC 17 April
NEODyS1422 April 17R E M O V E D
Assessment postings were noted by A/CC on 15 April, 16 April & 17 April   -   References: MPEC 2008-G90 plus DOUs 2008-H02, 2008-H07, 2008-H08, 2008-H10, 2008-H25, 2008-H28 & 2008-H52
2008 GD110JPL Sentry1312 April 21R E M O V E DRisk listing removed at 0933 UTC 21 April
NEODyS1423 April 18R E M O V E D
Assessment postings were noted by A/CC on 15 April, 16 April, 18 April & 21 April   -   References: MPEC 2008-G87 plus DOUs 2008-H07, 2008-H11, 2008-H21 & 2008-H22
2008 GA110JPL Sentry1423 April 18R E M O V E DRisk listing removed at 0952 UTC 18 April
NEODyS1423 April 18R E M O V E D
Assessment postings were noted by A/CC on 15 April, 16 April & 18 April   -   References: MPEC 2008-G84 plus DOUs 2008-H07, 2008-H25, 2008-H28 & 2008-H34
2008 GB21JPL Sentry1812 April 14R E M O V E DRisk listing removed at 1720 UTC 14 April
Assessment postings were noted by A/CC on 12 April & 14 April   -   References: MPEC 2008-G72 plus DOUs 2008-G74, 2008-G77, 2008-G83, 2008-H02, 2008-H07 & 2008-H34
2008 GO20JPL Sentry1812 April 14R E M O V E DRisk listing removed at 1638 UTC 14 April
NEODyS1600 April 13R E M O V E D
Assessment postings were noted by A/CC on 11 April, 12 April, 13 April & 14 April   -   References: MPEC 2008-G66 plus DOUs 2008-G74, 2008-G77, 2008-H02, 2008-H25 & 2008-H34
2008 GR3JPL Sentry1408 April 10R E M O V E DRisk listing removed at 1041 UTC 10 April
Assessment postings were noted by A/CC on 9 April & 10 April   -   References: MPEC 2008-G49 plus DOUs 2008-G61, 2008-H01 & 2008-H25
2008 GD1JPL Sentry1508 April 11R E M O V E DRisk listing removed at 1054 UTC 11 April
NEODyS1507 April 11R E M O V E D
Assessment postings were noted by A/CC on 9 April & 11 April   -   References: MPEC 2008-G26 plus DOUs 2008-G30, 2008-G46, 2008-G65, 2008-H22 & 2008-H52
2008 GKJPL Sentry0452 April 9R E M O V E DRisk listing removed at 0312 UTC 9 April
Assessment postings were noted by A/CC on 3 April & 9 April   -   References: MPEC 2008-G19 plus DOUs 2008-G20, 2008-G25, 2008-G30 & 2008-G46
2008 GJJPL Sentry2258 April 8R E M O V E DRisk listing removed at 2211 UTC 8 April
NEODyS1458 April 6R E M O V E D
Assessment postings were noted by A/CC on 2 April, 3 April, 4 April, 5 April, 6 April & 8 April   -   References: MPEC 2008-G14 plus DOUs 2008-G20, 2008-G25, 2008-G30 & 2008-G46
2008 GHNEODyS1224 April 26R E M O V E D
Assessment postings were noted by A/CC on 3 April, 5 April, 6 April & 26 April   -   References: MPEC 2008-G13 plus DOUs 2008-G25, 2008-G30, 2008-G46 & 2008-H28
2008 GGNEODyS1507 April 11R E M O V E D
JPL Sentry0501 April 11R E M O V E DRisk listing removed at 0103 UTC 11 April
Assessment postings were noted by A/CC on 2 April, 3 April & 11 April   -   References: MPEC 2008-G12 plus DOUs 2008-G46 & 2008-G65
2008 GFJPL Sentry1347 April 3R E M O V E DRisk listing removed at 1053 UTC 3 April
Assessment postings were noted by A/CC on 2 April & 3 April   -   References: MPEC 2008-G09 plus DOUs 2008-G16, 2008-G25, 2008-G46, 2008-G61, 2008-G65, 2008-H25, 2008-H28, 2008-H33 & 2008-H52
2008 GCJPL Sentry2354 April 10R E M O V E D
Assessment postings were noted by A/CC on 9 April & 10 April   -   References: DOU 2008-G46
2008 FL7JPL Sentry1347 April 3R E M O V E DRisk listing removed at 1132 UTC 3 April
Assessment postings were noted by A/CC on 1 April & 3 April   -   References: MPEC 2008-G06 plus DOUs 2008-G16, 2008-G20, 2008-G25, 2008-G46 & 2008-G61
2008 FK7JPL Sentry0452 April 9R E M O V E DRisk listing removed at 0433 UTC 9 April
NEODyS1427 April 4R E M O V E D
Assessment postings were noted by A/CC on 1 April, 2 April, 4 April & 9 April   -   References: MPEC 2008-G05 plus DOUs 2008-G20, 2008-G25, 2008-G30, 2008-G43 & 2008-G46
2008 FW6JPL Sentry1459 April 2R E M O V E DRisk listing removed at 1241 UTC 2 April
Assessment postings were noted by A/CC on 31 March & 2 April   -   References: MPEC 2008-F64 plus DOUs 2008-G11, 2008-G20, 2008-G25, 2008-G31, 2008-G46, 2008-G61, 2008-G77, 2008-H21, 2008-H34 & 2008-H48
2008 FT6JPL Sentry0452 April 9R E M O V E DRisk listing removed at 0448 UTC 9 April
NEODyS1427 April 4R E M O V E D
Assessment postings were noted by A/CC on 31 March, 1 April, 2 April, 4 April & 9 April   -   References: MPEC 2008-F60 plus DOUs 2008-G11, 2008-G20, 2008-G30, 2008-G31, 2008-G43, 2008-G46, 2008-G65, 2008-G68, 2008-G77, 2008-G83, 2008-H02, 2008-H07 & 2008-H28
2008 FW5JPL Sentry1435 April 1R E M O V E DRisk listing removed at 1010 UTC 1 April
Assessment postings were noted by A/CC on 1 April   -   References: DOUs 2008-G02, 2008-G11, 2008-G16, 2008-G46, 2008-G61, 2008-H28, 2008-H33 & 2008-H34
2008 FNJPL Sentry1459 April 9R E M O V E DRisk listing removed at 0513 UTC 9 April
NEODyS1427 April 4R E M O V E D
Assessment postings were noted by A/CC on 31 March, 1 April, 2 April, 3 April, 4 April & 9 April   -   References: MPEC 2008-G78 plus DOUs 2008-F58, 2008-G02, 2008-G11, 2008-G16, 2008-G20, 2008-G25, 2008-G30, 2008-G43, 2008-G46, 2008-G77, 2008-H10, 2008-H25, 2008-H28 & 2008-H52

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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