Compiled at 2359 UTC on 31 August 2009
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| 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 QB35 | NEODyS | 1552 Aug. 30 | 2017-2088 | 13 | 1.65e-08 | -4.87 | -5.30 | 0 | Based on 13 optical observations (of which 0 are rejected as outliers) from 2009/08/28.344 to 2009/08/29.072. |
| JPL Sentry | 0430 Aug. 30 | 2012-2108 | 201 | 2.7e-07 | -3.74 | -4.23 | 0 | Analysis based on 13 observations spanning .72860 days (2009-Aug-28.34307 to 2009-Aug-29.07167). Diameter approximately 0.351 km. from mean, weighted H=19.9. | |
| Assessment postings were noted by A/CC on 30 Aug. - References: MPEC 2009-Q78 | |||||||||
| 2009 OW6 | NEODyS | 1305 Aug. 10 | 2080 | 1 | 8.82e-06 | -5.51 | -5.51 | 0 | Based on 56 optical observations (of which 2 are rejected as outliers) from 2009/07/27.361 to 2009/08/09.536. |
| JPL Sentry | 1305 Aug. 10 | 2080-2099 | 2 | 9.0e-06 | -5.50 | -5.52 | 0 | Analysis based on 54 observations spanning 13.174 days (2009-Jul-27.36058 to 2009-Aug-09.534873). Diameter approximately 0.029 km. from mean, weighted H=25.3. | |
| Assessment postings were noted by A/CC on 1 Aug., 2 Aug. & 10 Aug. - References: MPECs 2009-P03, 2009-P04 & 2009-P34 | |||||||||
| 2004 BX159 | JPL Sentry | 0430 Aug. 30 | 2014-2100 | 13 | 2.6e-09 | -4.27 | -4.64 | 0 | Analysis based on 8 observations spanning 3.0080 days (2004-Jan-20.317639 to 2004-Jan-23.32563). Diameter approximately 1.200 km. from mean, weighted H=17.2. |
| An assessment posting was noted by A/CC on 30 Aug. - References: no recent MPECs | |||||||||
| 1991 VG | JPL Sentry | 2206 Aug. 9 | 2101 | 1 | 4.4e-07 | -8.51 | -8.51 | 0 | Analysis based on 63 observations spanning 173.12 days (1991-Nov-06.32553 to 1992-Apr-27.44847). Diameter approximately 0.007 km. from mean, weighted H=28.4. |
| An assessment posting was noted by A/CC on 9 Aug. - References: no recent MPECs | |||||||||
| C L E A R E D | |||||||||
| 2009 QF34 | NEODyS | 1552 Aug. 30 | R E M O V E D | ||||||
| JPL Sentry | 1552 Aug. 30 | R E M O V E D | Risk listing removed at 0850 UTC 30 Aug. | ||||||
| Assessment postings were noted by A/CC on 28 Aug., 29 Aug. & 30 Aug. - References: MPECs 2009-Q62, 2009-Q80 & 2009-Q83 | |||||||||
| 2009 QL8 | NEODyS | 1325 Aug. 24 | R E M O V E D | ||||||
| JPL Sentry | 1325 Aug. 24 | R E M O V E D | Risk listing removed at 0850 UTC 24 Aug. | ||||||
| Assessment postings were noted by A/CC on 21 Aug., 23 Aug. & 24 Aug. - References: MPECs 2009-Q36, 2009-Q50, 2009-Q53, 2009-Q55, 2009-Q57, 2009-Q59, 2009-Q66 & 2009-Q80 | |||||||||
| 2009 QZ6 | NEODyS | 1500 Aug. 23 | R E M O V E D | ||||||
| Assessment postings were noted by A/CC on 21 Aug. & 23 Aug. - References: MPECs 2009-Q33, 2009-Q50, 2009-Q53, 2009-Q54, 2009-Q55, 2009-Q57, 2009-Q80 & 2009-Q83 | |||||||||
| 2009 QH6 | NEODyS | 1411 Aug. 21 | R E M O V E D | ||||||
| JPL Sentry | 1411 Aug. 21 | R E M O V E D | Risk listing removed at 0853 UTC 21 Aug. | ||||||
| Assessment postings were noted by A/CC on 20 Aug. & 21 Aug. - References: MPECs 2009-Q28, 2009-Q31, 2009-Q37, 2009-Q50, 2009-Q54, 2009-Q55, 2009-Q57, 2009-Q80 & 2009-Q83 | |||||||||
| 2009 QR | NEODyS | 1458 Aug. 22 | R E M O V E D | ||||||
| Assessment postings were noted by A/CC on 18 Aug., 19 Aug., 20 Aug., 21 Aug. & 22 Aug. - References: MPECs 2009-Q09, 2009-Q23, 2009-Q31, 2009-Q37, 2009-Q42 & 2009-Q54 | |||||||||
| 2009 PU1 | JPL Sentry | 1525 Aug. 16 | R E M O V E D | Risk listing removed at 0850 UTC 16 Aug. | |||||
| An assessment posting was noted by A/CC on 16 Aug. - References: MPECs 2009-Q01, 2009-Q02, 2009-Q06, 2009-Q13, 2009-Q50 & 2009-Q66 | |||||||||
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.