Compiled at 2358 UTC on 31 July 2008
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Missing something? Here are 99942 Apophis (2004 MN4) and 144898 2004 VD17. Check the archives for others.
| 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 OB9 | JPL Sentry | 1922 July 31 | 2014-2106 | 48 | 6.2e-08 | -3.03 | -3.62 | 0 | Analysis 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 OP8 | JPL Sentry | 1525 July 31 | 2035-2092 | 3 | 3.3e-10 | -6.24 | -6.61 | 0 | Analysis 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 OO8 | JPL Sentry | 1525 July 31 | 2021-2096 | 17 | 2.4e-06 | -5.77 | -6.33 | 0 | Analysis 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 OT7 | JPL Sentry | 0433 July 31 | 2085-2098 | 3 | 2.0e-08 | -9.01 | -9.03 | 0 | Analysis 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 OS7 | NEODyS | 1352 July 31 | 2087 | 1 | 9.36e-10 | -6.81 | -6.81 | 0 | Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/07/30.246 to 2008/07/30.964. |
| JPL Sentry | 0329 July 31 | 2069-2108 | 10 | 6.8e-09 | -5.93 | -6.47 | 0 | Analysis 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 OC6 | NEODyS | 2002 July 31 | 2011-2048 | 15 | 9.99e-10 | -4.74 | -5.31 | 0 | Based 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 OY2 | JPL Sentry | 1447 July 30 | 2091 | 1 | 1.4e-09 | -10.28 | -10.3 | 0 | Analysis 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 OX2 | NEODyS | 1524 July 30 | 2014-2090 | 24 | 1.08e-07 | -3.88 | -4.20 | 0 | Based on 16 optical observations (of which 0 are rejected as outliers) from 2008/07/28.426 to 2008/07/29.400. |
| JPL Sentry | 1447 July 30 | 2016-2108 | 77 | 2.0e-07 | -4.12 | -4.32 | 0 | Analysis 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 OO1 | JPL Sentry | 1417 July 29 | 2107 | 1 | 7.8e-07 | -6.21 | -6.21 | 0 | Analysis 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 OO | NEODyS | 1352 July 31 | 2075-2081 | 5 | 1.99e-07 | -4.08 | -4.43 | 0 | Based on 61 optical observations (of which 0 are rejected as outliers) from 2008/07/26.093 to 2008/07/29.313. |
| JPL Sentry | 1351 July 31 | 2075-2108 | 19 | 4.6e-07 | -3.76 | -4.36 | 0 | Analysis 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 EA9 | NEODyS | 1630 July 2 | 2061-2090 | 19 | 2.88e-05 | -6.23 | -6.54 | 0 | Based on 60 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/04/11.248. |
| JPL Sentry | 1344 July 2 | 2068-2105 | 11 | 2.9e-05 | -6.22 | -6.53 | 0 | Analysis 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 NQ3 | JPL Sentry | 1437 July 17 | R E M O V E D | Risk 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 NO3 | JPL Sentry | 1417 July 29 | R E M O V E D | Risk listing removed at 0849 UTC 29 July | |||||
| NEODyS | 1435 July 23 | R 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 MV1 | JPL Sentry | 1511 July 4 | R E M O V E D | Risk listing removed at 0850 UTC 4 July | |||||
| NEODyS | 1511 July 4 | R 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.