Compiled at 2359 UTC on 31 December 2007
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Something missing? 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 |
| 2007 YB2 | NEODyS | 1453 Dec. 31 | 2043 | 1 | 4.97e-08 | -3.82 | -3.82 | 0 | Based on 55 optical observations (of which 0 are rejected as outliers) from 2007/12/18.346 to 2007/12/31.081. |
| JPL Sentry | 1452 Dec. 31 | 2043-2098 | 2 | 4.8e-08 | -3.84 | -3.86 | 0 | Analysis based on 55 observations spanning 12.735 days (2007-Dec-18.34552 to 2007-Dec-31.08035). Diameter approximately 0.770 km. from mean, weighted H=18.2. | Assessment postings were noted by A/CC on 19 Dec., 20 Dec., 21 Dec., 26 Dec., 27 Dec., 29 Dec. & 31 Dec. - References: MPEC 2007-Y32 plus DOUs 2007-Y33, 2007-Y40, 2007-Y49, 2007-Y50, 2007-Y52 & 2007-Y60 |
| 2007 YH1 | NEODyS | 1440 Dec. 19 | 2024-2059 | 5 | 2.85e-09 | -7.98 | -8.35 | 0 | Based on 11 optical observations (of which 0 are rejected as outliers) from 2007/12/17.434 to 2007/12/18.338. |
| JPL Sentry | 0228 Dec. 19 | 2024-2079 | 12 | 1.1e-08 | -7.69 | -8.31 | 0 | Analysis based on 11 observations spanning .90366 days (2007-Dec-17.43343 to 2007-Dec-18.33709). Diameter approximately 0.041 km. from mean, weighted H=24.6. | Assessment postings were noted by A/CC on 19 Dec. - References: MPEC 2007-Y25 |
| 2007 YG1 | NEODyS | 1451 Dec. 31 | R E M O V E D | ||||||
| JPL Sentry | 1440 Dec. 19 | 2019-2047 | 2 | 3.2e-10 | -5.30 | -5.51 | 0 | Analysis based on 21 observations spanning 2.0744 days (2007-Dec-16.45543 to 2007-Dec-18.52985). Diameter approximately 1.200 km. from mean, weighted H=17.3. | Assessment postings were noted by A/CC on 18 Dec., 19 Dec. & 31 Dec. - References: MPEC 2007-Y24 plus DOU 2007-Y30 |
| 2007 YM | NEODyS | 1604 Dec. 18 | 2011-2089 | 90 | 1.1e-05 | -5.09 | -5.87 | 0 | Based on 12 optical observations (of which 0 are rejected as outliers) from 2007/12/17.397 to 2007/12/17.525. |
| JPL Sentry | 0158 Dec. 18 | 2010-2106 | 122 | 3.9e-06 | -5.83 | -6.42 | 0 | Analysis based on 12 observations spanning .12805 days (2007-Dec-17.39661 to 2007-Dec-17.52466). Diameter approximately 0.020 km. from mean, weighted H=26.1. | Assessment postings were noted by A/CC on 18 Dec. - References: MPEC 2007-Y18 |
| 2007 XB23 | JPL Sentry | 0146 Dec. 19 | 2078-2087 | 2 | 6.6e-07 | -7.56 | -7.81 | 0 | Analysis based on 10 observations spanning .91734 days (2007-Dec-14.56193 to 2007-Dec-15.47927). Diameter approximately 0.013 km. from mean, weighted H=27.1. |
| NEODyS | 1501 Dec. 16 | 2069-2086 | 3 | 4.21e-08 | -8.77 | -9.08 | 0 | Based on 10 optical observations (of which 0 are rejected as outliers) from 2007/12/14.563 to 2007/12/15.480. | Assessment postings were noted by A/CC on 16 Dec. & 19 Dec. - References: MPEC 2007-X61 |
| 2007 XZ9 | NEODyS | 1604 Dec. 18 | 2056-2089 | 4 | 1.52e-06 | -5.78 | -5.96 | 0 | Based on 41 optical observations (of which 0 are rejected as outliers) from 2007/12/04.195 to 2007/12/18.184. |
| JPL Sentry | 1446 Dec. 18 | 2056-2089 | 5 | 1.6e-06 | -5.75 | -5.94 | 0 | Analysis based on 41 observations spanning 13.990 days (2007-Dec-04.19408 to 2007-Dec-18.18365). Diameter approximately 0.037 km. from mean, weighted H=24.8. | Assessment postings were noted by A/CC on 6 Dec., 7 Dec., 9 Dec., 12 Dec., 17 Dec. & 18 Dec. - References: MPEC 2007-X28 plus DOUs 2007-X34, 2007-X39, 2007-X53, 2007-Y05 & 2007-Y21 |
| 2007 WT3 | JPL Sentry | 1504 Dec. 1 | 2101 | 1 | 6.9e-08 | -6.78 | -6.78 | 0 | Analysis based on 18 observations spanning 11.879 days (2007-Nov-18.29804 to 2007-Nov-30.177151). Diameter approximately 0.051 km. from mean, weighted H=24.1. | Assessment postings were noted by A/CC on 1 Dec. - References: DOU 2007-X04 |
| 2007 WP3 | JPL Sentry | 1401 Dec. 16 | 2098-2105 | 8 | 5.4e-06 | -4.81 | -5.16 | 0 | Analysis based on 60 observations spanning 26.940 days (2007-Nov-18.26457 to 2007-Dec-15.20424). Diameter approximately 0.066 km. from mean, weighted H=23.5. | Assessment postings were noted by A/CC on 30 Nov., 2 Dec., 3 Dec., 4 Dec., 6 Dec. & 16 Dec. - References: DOUs 2007-X07, 2007-X08, 2007-X15, 2007-X19, 2007-X26 & 2007-Y02 |
| 2007 VK184 | JPL Sentry | 2259 Dec. 18 | 2048-2057 | 4 | 3.3e-04 | -1.85 | -1.85 | 1 | Analysis based on 95 observations spanning 35.987 days (2007-Nov-12.13904 to 2007-Dec-18.1258). Diameter approximately 0.130 km. from mean, weighted H=22.0. |
| NEODyS | 1446 Dec. 18 | 2048-2057 | 3 | 3.22e-04 | -1.86 | -1.87 | 1 | Based on 96 optical observations (of which 1 are rejected as outliers) from 2007/11/12.140 to 2007/12/18.134. | Assessment postings were noted by A/CC on 2 Dec., 3 Dec., 4 Dec., 5 Dec., 7 Dec., 16 Dec., 17 Dec. & 18 Dec. - References: DOUs 2007-X07, 2007-X08, 2007-X15, 2007-X19, 2007-X34, 2007-Y02 & 2007-Y21 |
| C L E A R E D | |||||||||
| 2007 YV29 | JPL Sentry | 1454 Dec. 30 | R E M O V E D | Risk listing removed at 1122 UTC 30 Dec. | Assessment postings were noted by A/CC on 29 Dec. & 30 Dec. - References: MPEC 2007-Y53 plus DOU 2007-Y54 | ||||
| 2007 YN1 | NEODyS | 1408 Dec. 20 | R E M O V E D | Assessment postings were noted by A/CC on 19 Dec. & 20 Dec. - References: MPEC 2007-Y29 plus DOUs 2007-Y30, 2007-Y33, 2007-Y40, 2007-Y52 & 2007-Y54 | |||||
| 2007 YZ | JPL Sentry | 1525 Dec. 18 | R E M O V E D | Risk listing removed at 1512 UTC 18 Dec. | Assessment postings were noted by A/CC on 18 Dec. - References: MPEC 2007-Y20 plus DOUs 2007-Y21, 2007-Y30, 2007-Y33, 2007-Y40, 2007-Y41, 2007-Y42, 2007-Y43, 2007-Y48, 2007-Y50, 2007-Y51, 2007-Y52, 2007-Y54 & 2007-Y60 | ||||
| 2007 YJ | JPL Sentry | 1446 Dec. 18 | R E M O V E D | Risk listing removed at 1424 UTC 18 Dec. | Assessment postings were noted by A/CC on 18 Dec. - References: MPEC 2007-Y16 plus DOUs 2007-Y21 & 2007-Y52 | ||||
| 2007 YG | JPL Sentry | 1820 Dec. 18 | R E M O V E D | Risk listing removed at 1803 UTC 18 Dec. | Assessment postings were noted by A/CC on 17 Dec. & 18 Dec. - References: MPEC 2007-Y14 plus DOUs 2007-Y21, 2007-Y33, 2007-Y40 & 2007-Y60 | ||||
| 2007 YF | JPL Sentry | 1408 Dec. 20 | R E M O V E D | Risk listing removed at 1325 UTC 20 Dec. | Assessment postings were noted by A/CC on 17 Dec. & 20 Dec. - References: MPEC 2007-Y13 plus DOUs 2007-Y33 & 2007-Y52 | ||||
| 2007 XF25 | JPL Sentry | 1440 Dec. 19 | R E M O V E D | Risk listing removed at 1054 UTC 19 Dec. | |||||
| NEODyS | 1440 Dec. 19 | R E M O V E D | Assessment postings were noted by A/CC on 18 Dec. & 19 Dec. - References: MPEC 2007-Y19 plus DOUs 2007-Y30, 2007-Y33 & 2007-Y49 | ||||||
| 2007 XF18 | JPL Sentry | 1446 Dec. 18 | R E M O V E D | Risk listing removed at 1341 UTC 18 Dec. | |||||
| NEODyS | 1400 Dec. 15 | R E M O V E D | Assessment postings were noted by A/CC on 13 Dec., 14 Dec., 15 Dec., 17 Dec. & 18 Dec. - References: MPEC 2007-X55 plus DOUs 2007-X59, 2007-Y05, 2007-Y21 & 2007-Y30 | ||||||
| 2007 XN16 | JPL Sentry | 1356 Dec. 12 | R E M O V E D | Risk listing removed at 1126 UTC 12 Dec. | Assessment postings were noted by A/CC on 11 Dec. & 12 Dec. - References: MPEC 2007-X52 plus DOUs 2007-X53, 2007-X54 & 2007-Y54 | ||||
| 2007 XJ16 | NEODyS | 1604 Dec. 18 | R E M O V E D | ||||||
| JPL Sentry | 1446 Dec. 18 | R E M O V E D | Risk listing removed at 1251 UTC 18 Dec. | Assessment postings were noted by A/CC on 10 Dec., 11 Dec., 16 Dec. & 18 Dec. - References: MPEC 2007-X50 plus DOUs 2007-Y02, 2007-Y21, 2007-Y40, 2007-Y52 & 2007-Y54 | |||||
| 2007 XK11 | JPL Sentry | 1452 Dec. 31 | R E M O V E D | Risk listing removed at 1121 UTC 31 Dec. | |||||
| NEODyS | 1437 Dec. 26 | R E M O V E D | Assessment postings were noted by A/CC on 7 Dec., 8 Dec., 11 Dec., 14 Dec., 15 Dec., 16 Dec., 18 Dec., 19 Dec., 20 Dec., 26 Dec., 28 Dec., 29 Dec., 30 Dec. & 31 Dec. - References: MPEC 2007-X35 plus DOUs 2007-X38, 2007-X51, 2007-X56, 2007-X59, 2007-Y02, 2007-Y21, 2007-Y30, 2007-Y33, 2007-Y49, 2007-Y51, 2007-Y52, 2007-Y54 & 2007-Y60 | ||||||
| 2007 XD10 | JPL Sentry | 1350 Dec. 11 | R E M O V E D | Risk listing removed at 1103 UTC 11 Dec. | |||||
| NEODyS | 1350 Dec. 11 | R E M O V E D | Assessment postings were noted by A/CC on 6 Dec., 7 Dec. & 11 Dec. - References: MPEC 2007-X32 plus DOUs 2007-X34, 2007-X51, 2007-Y02, 2007-Y30, 2007-Y40 & 2007-Y52 | ||||||
| 2007 XB10 | JPL Sentry | 1446 Dec. 18 | R E M O V E D | Risk listing removed at 1214 UTC 18 Dec. | |||||
| NEODyS | 1446 Dec. 18 | R E M O V E D | Assessment postings were noted by A/CC on 7 Dec., 11 Dec., 16 Dec. & 18 Dec. - References: MPEC 2007-X30 plus DOUs 2007-X51, 2007-Y02, 2007-Y21, 2007-Y30, 2007-Y33 & 2007-Y52 | ||||||
| 2007 XP3 | JPL Sentry | 1759 Dec. 18 | R E M O V E D | Risk listing removed at 1728 UTC 18 Dec. | |||||
| NEODyS | 1446 Dec. 18 | R E M O V E D | Assessment postings were noted by A/CC on 7 Dec., 8 Dec., 9 Dec., 12 Dec., 16 Dec. & 18 Dec. - References: MPEC 2007-X22 plus DOUs 2007-X26, 2007-X39, 2007-X53, 2007-Y02, 2007-Y21, 2007-Y30, 2007-Y40 & 2007-Y52 | ||||||
| 2007 WE55 | JPL Sentry | 1504 Dec. 1 | R E M O V E D | Risk listing removed at 1129 UTC 1 Dec. | Assessment postings were noted by A/CC on 1 Dec. - References: MPEC 2007-X02 plus DOUs 2007-X04, 2007-X07, 2007-X08, 2007-X26, 2007-X38, 2007-Y05 & 2007-Y21 | ||||
| 2007 WY3 | JPL Sentry | 1356 Dec. 12 | R E M O V E D | Risk listing removed at 1250 UTC 12 Dec. | |||||
| NEODyS | 1416 Dec. 4 | R E M O V E D | Assessment postings were noted by A/CC on 4 Dec., 5 Dec., 7 Dec. & 12 Dec. - References: DOUs 2007-X15, 2007-X19, 2007-X26, 2007-X53, 2007-Y21, 2007-Y30 & 2007-Y52 | ||||||
| 2007 VN243 | JPL Sentry | 1509 Dec. 2 | R E M O V E D | Risk listing removed at 1252 UTC 2 Dec. | |||||
| NEODyS | 1509 Dec. 2 | R E M O V E D | Assessment postings were noted by A/CC on 2 Dec. - References: DOUs 2007-X07 & 2007-Y51 | ||||||
| 2007 TU24 | JPL Sentry | 1416 Dec. 4 | R E M O V E D | Risk listing removed at 1405 UTC 4 Dec. | Assessment postings were noted by A/CC on 4 Dec. - References: DOUs 2007-X15, 2007-X19 & 2007-X26 | ||||
Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale
For a list of all risk-rated objects currently in view, 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.