Compiled at 1327 UTC on 21 May 2013
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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 |
| 2013 JD34 | NEODyS | 1333 May 18 | 2058-2058 | 1 | 7.93e-10 | -8.87 | -8.87 | 0 | Based on 16 optical observations (of which 0 are rejected as outliers) from 2013-05-15.384 to 2013-05-17.312. |
| JPL Sentry | 2359 May 17 | 2058 | 1 | 3.8e-10 | -9.19 | -9.19 | 0 | Analysis based on 16 observations spanning 1.9279 days (2013-May-15.3829 to 2013-May-17.31075). Diameter approximately 0.032 km. from mean, weighted H=25.1. | |
| Assessment postings were noted by A/CC on 17 May & 18 May - References: MPEC 2013-K08 | |||||||||
| 2013 HT14 | NEODyS | 0000 April 24 | 2071-2077 | 3 | 1.22e-06 | -6.36 | -6.49 | 0 | Based on 23 optical observations (of which 0 are rejected as outliers) from 2013-04-21.260 to 2013-04-23.276. |
| JPL Sentry | 2302 April 23 | 2021-2077 | 7 | 5.1e-06 | -5.04 | -5.05 | 0 | Analysis based on 23 observations spanning 2.0169 days (2013-Apr-21.25884 to 2013-Apr-23.27569). Diameter approximately 0.019 km. from mean, weighted H=26.3. | |
| Assessment postings were noted by A/CC on 23 April & 24 April - References: MPEC 2013-H39 | |||||||||
| 2013 GA55 | JPL Sentry | 2359 April 29 | 2070-2113 | 21 | 1.2e-05 | -6.50 | -7.19 | 0 | Analysis based on 14 observations spanning 1.7271 days (2013-Apr-09.44557 to 2013-Apr-11.17271). Diameter approximately 0.010 km. from mean, weighted H=27.7. |
| An assessment posting was noted by A/CC on 29 April - References: no MPECs | |||||||||
| 2013 GW38 | JPL Sentry | 2359 April 29 | 2061-2113 | 13 | 6.4e-06 | -7.07 | -7.61 | 0 | Analysis based on 18 observations spanning 1.3411 days (2013-Apr-09.45225 to 2013-Apr-10.79339). Diameter approximately 0.007 km. from mean, weighted H=28.5. |
| An assessment posting was noted by A/CC on 29 April - References: no MPECs | |||||||||
| 2013 GM3 | JPL Sentry | 2359 April 29 | 2028-2113 | 174 | 1.5e-04 | -4.62 | -5.49 | 0 | Analysis based on 62 observations spanning 9.9806 days (2013-Apr-03.32112 to 2013-Apr-13.30177). Diameter approximately 0.019 km. from mean, weighted H=26.2. |
| NEODyS | 1516 April 24 | 2028-2090 | 115 | 8.53e-05 | -4.81 | -5.53 | 0 | Based on 62 optical observations (of which 2 are rejected as outliers) from 2013-04-03.322 to 2013-04-13.303. | |
| Assessment postings were noted by A/CC on 24 April & 29 April - References: DOU 2013-H42 | |||||||||
| 2013 FU13 | JPL Sentry | 2359 April 29 | 2081-2098 | 5 | 2.1e-04 | -5.04 | -5.11 | 0 | Analysis based on 21 observations spanning 17.219 days (2013-Mar-24.34961 to 2013-Apr-10.568711). Diameter approximately 0.012 km. from mean, weighted H=27.2. |
| An assessment posting was noted by A/CC on 29 April - References: no MPECs | |||||||||
| 2013 ED28 | JPL Sentry | 2359 April 29 | 2036 | 1 | 3.2e-07 | -4.18 | -4.18 | 0 | Analysis based on 41 observations spanning 21.868 days (2013-Mar-07.21735 to 2013-Mar-29.085141). Diameter approximately 0.170 km. from mean, weighted H=21.4. |
| An assessment posting was noted by A/CC on 29 April - References: no MPECs | |||||||||
| 2012 YR1 | JPL Sentry | 2359 April 29 | 2077 | 1 | 7.4e-07 | -7.09 | -7.09 | 0 | Analysis based on 30 observations spanning 23.330 days (2012-Dec-20.20945 to 2013-Jan-12.53922). Diameter approximately 0.017 km. from mean, weighted H=26.5. |
| An assessment posting was noted by A/CC on 29 April - References: no recent MPECs | |||||||||
| 2012 WR10 | JPL Sentry | 2359 April 29 | 2087-2112 | 2 | 5.7e-07 | -8.36 | -8.42 | 0 | Analysis based on 45 observations spanning 26.156 days (2012-Nov-22.21759 to 2012-Dec-18.37324). Diameter approximately 0.007 km. from mean, weighted H=28.5. |
| An assessment posting was noted by A/CC on 29 April - References: no recent MPECs | |||||||||
| 2009 VZ39 | JPL Sentry | 0404 May 9 | 2013-2110 | 788 | 6.9e-06 | -6.25 | -7.48 | 0 | Analysis based on 8 observations spanning .04342 days (2009-Nov-10.27204 to 2009-Nov-10.31546). Diameter approximately 0.009 km. from mean, weighted H=27.9. |
| An assessment posting was noted by A/CC on 9 May - References: no recent MPECs | |||||||||
| 99942 Apophis (2004 MN4) | NEODyS | 1916 May 1 | 2060-2105 | 12 | 5.71e-06 | -3.19 | -3.32 | 0 | Based on 3987 optical observations (of which 0 are rejected as outliers) from 2004-03-15.126 to 2013-04-15.157 and also on twenty radar data points on 2005-01-27, 2005-01-29, 2005-01-30, 2005-08-07, 2006-05-06, 2012-12-21, 2012-12-22, 2013-01-03, 2013-01-05, 2013-01-06, 2013-01-09, 2013-01-10, 2013-01-14, 2013-01-16, 2013-02-18, 2013-02-20 and 2013-03-15. |
| JPL Sentry | 1916 May 1 | 2060-2105 | 12 | 5.7e-06 | -3.19 | -3.32 | 0 | Analysis based on 13 radar delay, 7 Doppler, and 3987 optical observations spanning 3318.0 days (2004-Mar-15.126289 to 2013-Apr-15.15729). Diameter approximately 0.330 km. from mean, weighted H=19.7. | |
| Assessment postings were noted by A/CC on 1 May - References: DOUs 2013-H24, 2013-H48, 2013-J01, 2013-J05, 2013-J18, 2013-J26 & 2013-J33 | |||||||||
| C L E A R E D | |||||||||
| 2013 JR28 | NEODyS | 1333 May 18 | R E M O V E D | ||||||
| JPL Sentry | 1333 May 18 | R E M O V E D | Risk listing removed at 0950 UTC 18 May | ||||||
| Assessment postings were noted by A/CC on 15 May, 16 May & 18 May - References: MPEC 2013-J70 plus DOUs 2013-K12 & 2013-K32 | |||||||||
| 2013 JM22 | JPL Sentry | 2008 May 20 | R E M O V E D | Risk listing removed at 1955 UTC 20 May | |||||
| NEODyS | 1236 May 16 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 13 May, 14 May, 15 May, 16 May, 17 May & 20 May - References: MPEC 2013-J59 plus DOUs 2013-J69, 2013-K01, 2013-K12 & 2013-K32 | |||||||||
| 2013 JW17 | JPL Sentry | 1258 May 14 | R E M O V E D | Risk listing removed at 0949 UTC 14 May | |||||
| Assessment postings were noted by A/CC on 12 May, 13 May & 14 May - References: MPEC 2013-J49 plus DOUs 2013-J53, 2013-J60, 2013-K14 & 2013-K24 | |||||||||
| 2013 JS17 | NEODyS | 1333 May 18 | R E M O V E D | ||||||
| JPL Sentry | 1333 May 18 | R E M O V E D | Risk listing removed at 0951 UTC 18 May | ||||||
| Assessment postings were noted by A/CC on 12 May, 13 May & 18 May - References: MPEC 2013-J45 plus DOUs 2013-J53 & 2013-K12 | |||||||||
| 2013 JM14 | JPL Sentry | 1459 May 12 | R E M O V E D | Risk listing removed at 0951 UTC 12 May | |||||
| NEODyS | 1459 May 12 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 10 May, 11 May & 12 May - References: MPEC 2013-J37 plus DOUs 2013-J43, 2013-J60, 2013-K12 & 2013-K24 | |||||||||
| 2013 JH14 | JPL Sentry | 1422 May 13 | R E M O V E D | Risk listing removed at 0950 UTC 13 May | |||||
| Assessment postings were noted by A/CC on 10 May & 13 May - References: MPEC 2013-J34 plus DOUs 2013-J53, 2013-K24 & 2013-K32 | |||||||||
| 2013 JE1 | JPL Sentry | 1504 May 6 | R E M O V E D | Risk listing removed at 1150 UTC 6 May | |||||
| NEODyS | 1504 May 6 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 4 May & 6 May - References: MPEC 2013-J12 plus DOUs 2013-J20, 2013-J26, 2013-J32, 2013-J41, 2013-J53, 2013-J60, 2013-K14 & 2013-K24 | |||||||||
| 2013 HT25 | JPL Sentry | 1402 May 10 | R E M O V E D | Risk listing removed at 0956 UTC 10 May | |||||
| NEODyS | 1402 May 10 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 7 May & 10 May - References: MPEC 2013-J24 plus DOU 2013-J33 | |||||||||
| 2013 HR | JPL Sentry | 1349 April 21 | R E M O V E D | Risk listing removed at 0951 UTC 21 April | |||||
| NEODyS | 1349 April 21 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 21 April - References: DOUs 2013-H25 & 2013-H26 | |||||||||
| 2013 GG69 | JPL Sentry | 1622 April 30 | R E M O V E D | Risk listing removed at 1549 UTC 30 April | |||||
| NEODyS | 1349 April 21 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 20 April, 21 April, 22 April, 29 April & 30 April - References: DOUs 2013-H24, 2013-H26, 2013-H50, 2013-J05, 2013-J11, 2013-J41 & 2013-K14 | |||||||||
| 2013 GF69 | JPL Sentry | 1457 April 22 | R E M O V E D | Risk listing removed at 0951 UTC 22 April | |||||
| NEODyS | 1349 April 21 | R E M O V E D | |||||||
| Assessment postings were noted by A/CC on 21 April & 22 April - References: DOUs 2013-H25, 2013-H26, 2013-J05, 2013-J11, 2013-J32 & 2013-J60 | |||||||||
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.