A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted During January 2011

Compiled at 2220 UTC on 31 January 2011

<< December 2010 CRT | CRT Archive Index | February 2011 CRT >>

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

Missing something? Check the archives for objects not under active observation or recent analysis.

Notes: The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both risk monitors also post a few special objects with impact solutions beyond 100 years. For the latest official risk assessments, and for explanations of terminology and methodology, 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
2011 BH40JPL Sentry1614 Jan. 312022-2110571.8e-07-6.72-7.260Analysis based on 12 observations spanning .06577 days (2011-Jan-30.42363 to 2011-Jan-30.4894). Diameter approximately 0.034 km. from mean, weighted H=25.0.
An assessment posting was noted by A/CC on 31 Jan.   -   References: MPEC 2011-B76
2011 BG40JPL Sentry1614 Jan. 312017-2047122.5e-09-7.93-8.310Analysis based on 6 observations spanning .94358 days (2011-Jan-30.40492 to 2011-Jan-31.348503). Diameter approximately 0.049 km. from mean, weighted H=24.2.
An assessment posting was noted by A/CC on 31 Jan.   -   References: MPEC 2011-B75
2011 BF40JPL Sentry1614 Jan. 312035-208534.0e-10-9.03-9.380Analysis based on 14 observations spanning .06708 days (2011-Jan-30.35537 to 2011-Jan-30.42245). Diameter approximately 0.046 km. from mean, weighted H=24.4.
An assessment posting was noted by A/CC on 31 Jan.   -   References: MPEC 2011-B74
2011 BC40NEODyS1614 Jan. 312026-2074108.89e-09-5.30-5.480Based on 17 optical observations (of which 0 are rejected as outliers) from 2011-01-30.201 to 2011-01-31.158.
JPL Sentry0711 Jan. 312026-2107171.9e-08-5.00-5.270Analysis based on 17 observations spanning .95685 days (2011-Jan-30.20006 to 2011-Jan-31.15691). Diameter approximately 0.341 km. from mean, weighted H=20.0.
Assessment postings were noted by A/CC on 31 Jan.   -   References: MPEC 2011-B71
2011 BH39NEODyS1615 Jan. 312016-20901804.94e-07-6.00-6.570Based on 21 optical observations (of which 0 are rejected as outliers) from 2011-01-30.224 to 2011-01-30.384.
JPL Sentry1614 Jan. 312014-21101956.8e-07-5.92-6.530Analysis based on 21 observations spanning .16019 days (2011-Jan-30.22278 to 2011-Jan-30.38297). Diameter approximately 0.028 km. from mean, weighted H=25.4.
Assessment postings were noted by A/CC on 31 Jan.   -   References: MPEC 2011-B68 plus DOU 2011-B72
2011 BY24NEODyS1750 Jan. 302058-208781.14e-08-6.54-6.660Based on 12 optical observations (of which 0 are rejected as outliers) from 2011-01-24.901 to 2011-01-29.537.
JPL Sentry1652 Jan. 292064-209357.5e-09-6.69-6.780Analysis based on 12 observations spanning 4.6358 days (2011-Jan-24.90012 to 2011-Jan-29.53588). Diameter approximately 0.140 km. from mean, weighted H=21.9.
Assessment postings were noted by A/CC on 29 Jan. & 30 Jan.   -   References: MPEC 2011-B64
2011 BN24NEODyS1750 Jan. 302013-2087617.34e-08-4.16-4.840Based on 14 optical observations (of which 0 are rejected as outliers) from 2011-01-28.307 to 2011-01-29.305.
JPL Sentry1750 Jan. 302014-21103644.2e-07-3.77-4.670Analysis based on 14 observations spanning .99843 days (2011-Jan-28.30613 to 2011-Jan-29.304563). Diameter approximately 0.244 km. from mean, weighted H=20.7.
Assessment postings were noted by A/CC on 29 Jan. & 30 Jan.   -   References: MPEC 2011-B61 plus DOU 2011-B67
2011 BM24NEODyS1750 Jan. 302021-206662.9e-09-5.00-5.160Based on 19 optical observations (of which 0 are rejected as outliers) from 2011-01-28.265 to 2011-01-29.214.
An assessment posting was noted by A/CC on 30 Jan.   -   References: MPEC 2011-B60
2011 BJ24NEODyS1615 Jan. 312043-208282.92e-09-4.90-5.30Based on 51 optical observations (of which 0 are rejected as outliers) from 2011-01-28.114 to 2011-01-29.421.
JPL Sentry1614 Jan. 312043-210164.3e-09-4.99-5.430Analysis based on 51 observations spanning 1.3070 days (2011-Jan-28.1131 to 2011-Jan-29.42014). Diameter approximately 0.985 km. from mean, weighted H=17.7.
Assessment postings were noted by A/CC on 29 Jan., 30 Jan. & 31 Jan.   -   References: MPEC 2011-B57 plus DOUs 2011-B67 & 2011-B72
2011 BX18NEODyS1750 Jan. 302016-2090925.59e-08-3.36-3.820Based on 23 optical observations (of which 0 are rejected as outliers) from 2011-01-26.311 to 2011-01-29.416.
JPL Sentry1750 Jan. 302030-2098303.1e-08-3.96-4.790Analysis based on 23 observations spanning 3.1046 days (2011-Jan-26.31025 to 2011-Jan-29.41482). Diameter approximately 0.837 km. from mean, weighted H=18.0.
Assessment postings were noted by A/CC on 28 Jan., 29 Jan. & 30 Jan.   -   References: MPEC 2011-B48 plus DOU 2011-B67
2011 BT15NEODyS1652 Jan. 292027-2090533.09e-05-2.91-3.270Based on 22 optical observations (of which 1 are rejected as outliers) from 2011-01-24.290 to 2011-01-29.171.
JPL Sentry1652 Jan. 292027-2090593.0e-05-3.07-3.610Analysis based on 22 observations spanning 4.8809 days (2011-Jan-24.28933 to 2011-Jan-29.17021). Diameter approximately 0.146 km. from mean, weighted H=21.9.
Assessment postings were noted by A/CC on 27 Jan., 28 Jan. & 29 Jan.   -   References: MPEC 2011-B43 plus DOUs 2011-B46 & 2011-B56
2011 BA12JPL Sentry1750 Jan. 302079-211097.6e-06-4.25-4.370Analysis based on 41 observations spanning 4.1198 days (2011-Jan-25.1938 to 2011-Jan-29.313551). Diameter approximately 0.097 km. from mean, weighted H=22.7.
NEODyS1750 Jan. 302079-207915.3e-06-4.36-4.360Based on 41 optical observations (of which 0 are rejected as outliers) from 2011-01-25.195 to 2011-01-29.314.
Assessment postings were noted by A/CC on 26 Jan., 27 Jan., 28 Jan. & 30 Jan.   -   References: MPEC 2011-B40 plus DOUs 2011-B46 & 2011-B67
2011 BV11NEODyS1652 Jan. 29R E M O V E D
JPL Sentry1652 Jan. 292096-210151.6e-08-6.95-7.030Analysis based on 20 observations spanning 3.0666 days (2011-Jan-25.26063 to 2011-Jan-28.32725). Diameter approximately 0.074 km. from mean, weighted H=23.3.
Assessment postings were noted by A/CC on 26 Jan., 27 Jan., 28 Jan. & 29 Jan.   -   References: MPEC 2011-B35 plus DOUs 2011-B44, 2011-B46 & 2011-B56
2011 BX10JPL Sentry1750 Jan. 302068-210621.5e-07-4.03-4.030Analysis based on 51 observations spanning 5.6335 days (2011-Jan-24.13405 to 2011-Jan-29.76752). Diameter approximately 0.690 km. from mean, weighted H=18.4.
NEODyS1750 Jan. 30R E M O V E D
Assessment postings were noted by A/CC on 25 Jan., 26 Jan., 27 Jan., 28 Jan., 29 Jan. & 30 Jan.   -   References: MPEC 2011-B31 plus DOUs 2011-B34, 2011-B44, 2011-B46, 2011-B56 & 2011-B67
2011 BG10NEODyS1615 Jan. 312051-207444.56e-06-5.87-6.120Based on 39 optical observations (of which 1 are rejected as outliers) from 2011-01-23.270 to 2011-01-30.521.
JPL Sentry1614 Jan. 312051-207441.6e-06-6.32-6.570Analysis based on 39 observations spanning 7.2507 days (2011-Jan-23.26948 to 2011-Jan-30.52016). Diameter approximately 0.019 km. from mean, weighted H=26.3.
Assessment postings were noted by A/CC on 23 Jan., 24 Jan., 26 Jan., 27 Jan., 28 Jan., 29 Jan., 30 Jan. & 31 Jan.   -   References: MPEC 2011-B24 plus DOUs 2011-B34, 2011-B44, 2011-B46, 2011-B56, 2011-B67 & 2011-B72
2011 AM37NEODyS1614 Jan. 152048-2090909.43e-04-5.48-5.830Based on 17 optical observations (of which 0 are rejected as outliers) from 2011-01-13.331 to 2011-01-14.397.
An assessment posting was noted by A/CC on 15 Jan.   -   References: MPEC 2011-A64
2011 AK37JPL Sentry1652 Jan. 292057-209721.3e-07-7.15-7.230Analysis based on 25 observations spanning 15.151 days (2011-Jan-13.30429 to 2011-Jan-28.45538). Diameter approximately 0.031 km. from mean, weighted H=25.2.
Assessment postings were noted by A/CC on 14 Jan., 28 Jan. & 29 Jan.   -   References: MPEC 2011-A62 plus DOUs 2011-B46 & 2011-B56
2011 AZ36NEODyS1556 Jan. 142042-2084113.89e-08-7.44-8.240Based on 9 optical observations (of which 0 are rejected as outliers) from 2011-01-13.281 to 2011-01-13.730.
JPL Sentry0100 Jan. 142017-21101924.2e-07-6.53-7.870Analysis based on 9 observations spanning .44921 days (2011-Jan-13.2805 to 2011-Jan-13.72971). Diameter approximately 0.032 km. from mean, weighted H=25.1.
Assessment postings were noted by A/CC on 14 Jan.   -   References: MPEC 2011-A54
2011 AZ22NEODyS1550 Jan. 122077-209022.9e-08-9.42-9.670Based on 16 optical observations (of which 0 are rejected as outliers) from 2011-01-11.357 to 2011-01-11.696.
JPL Sentry2329 Jan. 112034-211056.9e-07-7.84-8.020Analysis based on 16 observations spanning .33881 days (2011-Jan-11.35594 to 2011-Jan-11.69475). Diameter approximately 0.006 km. from mean, weighted H=28.6.
Assessment postings were noted by A/CC on 11 Jan. & 12 Jan.   -   References: MPEC 2011-A44
2011 AY22NEODyS1614 Jan. 152051-208692.2e-06-6.75-7.00Based on 22 optical observations (of which 0 are rejected as outliers) from 2011-01-11.330 to 2011-01-12.164.
JPL Sentry1614 Jan. 152044-2109231.8e-05-5.96-6.570Analysis based on 22 observations spanning .83375 days (2011-Jan-11.32922 to 2011-Jan-12.16297). Diameter approximately 0.013 km. from mean, weighted H=27.1.
Assessment postings were noted by A/CC on 11 Jan., 12 Jan. & 15 Jan.   -   References: MPEC 2011-A43 plus DOU 2011-A68
2011 AX22JPL Sentry1750 Jan. 302055-2101141.2e-04-3.80-3.840Analysis based on 60 observations spanning 18.981 days (2011-Jan-10.30552 to 2011-Jan-29.28644). Diameter approximately 0.039 km. from mean, weighted H=24.7.
NEODyS1750 Jan. 302055-207861.15e-04-3.81-3.850Based on 60 optical observations (of which 0 are rejected as outliers) from 2011-01-10.306 to 2011-01-29.287.
Assessment postings were noted by A/CC on 11 Jan., 12 Jan., 13 Jan., 15 Jan., 24 Jan., 27 Jan., 28 Jan. & 30 Jan.   -   References: MPEC 2011-A42 plus DOUs 2011-A48, 2011-A52, 2011-A68, 2011-B26, 2011-B44, 2011-B46 & 2011-B67
2011 AH5NEODyS1632 Jan. 132074-208321.98e-05-5.35-5.630Based on 54 optical observations (of which 0 are rejected as outliers) from 2011-01-08.340 to 2011-01-12.554.
JPL Sentry1632 Jan. 132067-210952.0e-05-5.37-5.670Analysis based on 54 observations spanning 4.2136 days (2011-Jan-08.33953 to 2011-Jan-12.55318). Diameter approximately 0.022 km. from mean, weighted H=25.9.
Assessment postings were noted by A/CC on 9 Jan., 10 Jan., 11 Jan., 12 Jan. & 13 Jan.   -   References: MPEC 2011-A32 plus DOUs 2011-A37, 2011-A41, 2011-A48 & 2011-A52
2011 AG5NEODyS1614 Jan. 312036-2057107.89e-05-2.59-2.770Based on 81 optical observations (of which 0 are rejected as outliers) from 2011-01-08.268 to 2011-01-29.835.
JPL Sentry1614 Jan. 312036-205788.0e-05-2.58-2.760Analysis based on 81 observations spanning 21.567 days (2011-Jan-08.2673 to 2011-Jan-29.83405). Diameter approximately 0.140 km. from mean, weighted H=22.0.
Assessment postings were noted by A/CC on 9 Jan., 10 Jan., 12 Jan., 13 Jan., 14 Jan., 22 Jan., 23 Jan., 25 Jan., 26 Jan., 27 Jan., 28 Jan., 29 Jan., 30 Jan. & 31 Jan.   -   References: MPEC 2011-A31 plus DOUs 2011-A37, 2011-A48, 2011-A52, 2011-A57, 2011-B20, 2011-B22, 2011-B33, 2011-B34, 2011-B44, 2011-B46, 2011-B56, 2011-B67 & 2011-B72
2011 AE3NEODyS2359 Jan. 52020-20901411.13e-05-6.33-7.20Based on 16 optical observations (of which 0 are rejected as outliers) from 2011-01-04.239 to 2011-01-04.282.
An assessment posting was noted by A/CC on 5 Jan.   -   References: MPEC 2011-A17
2011 AD3NEODyS1551 Jan. 52032-2080104.36e-09-8.80-9.10Based on 12 optical observations (of which 0 are rejected as outliers) from 2011-01-04.231 to 2011-01-04.311.
JPL Sentry2359 Jan. 42013-21091211.2e-07-7.72-8.780Analysis based on 12 observations spanning .08044 days (2011-Jan-04.2298 to 2011-Jan-04.31024). Diameter approximately 0.016 km. from mean, weighted H=26.6.
Assessment postings were noted by A/CC on 4 Jan. & 5 Jan.   -   References: MPEC 2011-A16
2010 YDJPL Sentry1625 Jan. 11205214.5e-08-8.12-8.120Analysis based on 44 observations spanning 10.136 days (2010-Dec-25.37287 to 2011-Jan-04.50918). Diameter approximately 0.016 km. from mean, weighted H=26.6.
NEODyS1551 Jan. 5R E M O V E D
Assessment postings were noted by A/CC on 3 Jan., 4 Jan., 5 Jan., 9 Jan. & 11 Jan.   -   References: DOUs 2011-A06, 2011-A09, 2011-A19, 2011-A33 & 2011-A41
2010 XW58JPL Sentry1750 Jan. 302069-2104124.4e-06-5.57-6.030Analysis based on 62 observations spanning 48.868 days (2010-Dec-11.47391 to 2011-Jan-29.3417). Diameter approximately 0.039 km. from mean, weighted H=24.7.
NEODyS1750 Jan. 302069-208939.34e-07-6.12-6.150Based on 63 optical observations (of which 1 are rejected as outliers) from 2010-12-11.475 to 2011-01-29.342.
Assessment postings were noted by A/CC on 3 Jan., 4 Jan., 5 Jan., 9 Jan., 10 Jan., 12 Jan., 13 Jan., 14 Jan., 27 Jan., 28 Jan., 29 Jan. & 30 Jan.   -   References: DOUs 2011-A06, 2011-A09, 2011-A19, 2011-A33, 2011-A37, 2011-A48, 2011-A52, 2011-A57, 2011-B44, 2011-B46, 2011-B56 & 2011-B67
2010 XC25NEODyS1614 Jan. 152050-206335.49e-06-3.14-3.160Based on 99 optical observations (of which 2 are rejected as outliers) from 2010-12-08.378 to 2011-01-14.516.
JPL Sentry1614 Jan. 152050-206335.5e-06-3.14-3.160Analysis based on 97 observations spanning 37.138 days (2010-Dec-08.37716 to 2011-Jan-14.51498). Diameter approximately 0.230 km. from mean, weighted H=20.9.
Assessment postings were noted by A/CC on 2 Jan., 3 Jan., 4 Jan., 5 Jan., 8 Jan., 9 Jan., 10 Jan., 12 Jan., 13 Jan., 14 Jan. & 15 Jan.   -   References: DOUs 2011-A04, 2011-A06, 2011-A09, 2011-A19, 2011-A29, 2011-A33, 2011-A37, 2011-A48, 2011-A52, 2011-A57 & 2011-A68
2005 NX55JPL Sentry0542 Jan. 72013-2102863.0e-08-5.05-5.410Analysis based on 14 observations spanning 1.1343 days (2005-Jul-11.16281 to 2005-Jul-12.297115). Diameter approximately 0.140 km. from mean, weighted H=21.9.
An assessment posting was noted by A/CC on 7 Jan.   -   References: no recent MPECs
C   L   E   A   R   E   D
2011 BF39NEODyS1614 Jan. 31R E M O V E D
JPL Sentry1614 Jan. 31R E M O V E DRisk listing removed at 1050 UTC 31 Jan.
Assessment postings were noted by A/CC on 30 Jan. & 31 Jan.   -   References: MPEC 2011-B66 plus DOU 2011-B72
2011 BO24JPL Sentry1750 Jan. 30R E M O V E DRisk listing removed at 1457 UTC 30 Jan.
Assessment postings were noted by A/CC on 29 Jan. & 30 Jan.   -   References: MPEC 2011-B62 plus DOU 2011-B67
2011 BF24JPL Sentry1750 Jan. 30R E M O V E DRisk listing removed at 1537 UTC 30 Jan.
NEODyS1750 Jan. 30R E M O V E D
Assessment postings were noted by A/CC on 29 Jan. & 30 Jan.   -   References: MPEC 2011-B54 plus DOU 2011-B67
2011 BY18JPL Sentry1750 Jan. 30R E M O V E DRisk listing removed at 1323 UTC 30 Jan.
NEODyS1750 Jan. 30R E M O V E D
Assessment postings were noted by A/CC on 28 Jan., 29 Jan. & 30 Jan.   -   References: MPEC 2011-B49 plus DOUs 2011-B56 & 2011-B67
2011 BW18NEODyS1614 Jan. 31R E M O V E D
JPL Sentry1614 Jan. 31R E M O V E DRisk listing removed at 1129 UTC 31 Jan.
Assessment postings were noted by A/CC on 28 Jan., 29 Jan. & 31 Jan.   -   References: MPEC 2011-B47 plus DOU 2011-B72
2011 BZ11JPL Sentry1700 Jan. 27R E M O V E DRisk listing removed at 1134 UTC 27 Jan.
An assessment posting was noted by A/CC on 27 Jan.   -   References: MPEC 2011-B39 plus DOU 2011-B44
2011 BW11NEODyS1544 Jan. 28R E M O V E D
JPL Sentry1544 Jan. 28R E M O V E DRisk listing removed at 1242 UTC 28 Jan.
Assessment postings were noted by A/CC on 26 Jan., 27 Jan. & 28 Jan.   -   References: MPEC 2011-B36 plus DOU 2011-B46
2011 BY10JPL Sentry1717 Jan. 26R E M O V E DRisk listing removed at 1135 UTC 26 Jan.
Assessment postings were noted by A/CC on 25 Jan. & 26 Jan.   -   References: MPEC 2011-B32 plus DOUs 2011-B34 & 2011-B46
2011 BV10NEODyS1717 Jan. 26R E M O V E D
JPL Sentry1717 Jan. 26R E M O V E DRisk listing removed at 1216 UTC 26 Jan.
Assessment postings were noted by A/CC on 25 Jan. & 26 Jan.   -   References: MPEC 2011-B29 plus DOUs 2011-B34, 2011-B44, 2011-B56, 2011-B67 & 2011-B72
2011 BH10NEODyS1717 Jan. 26R E M O V E D
JPL Sentry1717 Jan. 26R E M O V E DRisk listing removed at 1136 UTC 26 Jan.
Assessment postings were noted by A/CC on 24 Jan. & 26 Jan.   -   References: MPEC 2011-B25 plus DOU 2011-B34
2011 AN52NEODyS1605 Jan. 17R E M O V E D
JPL Sentry1605 Jan. 17R E M O V E DRisk listing removed at 1053 UTC 17 Jan.
Assessment postings were noted by A/CC on 15 Jan., 16 Jan. & 17 Jan.   -   References: MPEC 2011-A71 plus DOUs 2011-B04 & 2011-B09
2011 AL52NEODyS1717 Jan. 26R E M O V E D
JPL Sentry1717 Jan. 26R E M O V E DRisk listing removed at 1214 UTC 26 Jan.
Assessment postings were noted by A/CC on 16 Jan., 24 Jan., 25 Jan. & 26 Jan.   -   References: MPEC 2011-A69 plus DOUs 2011-B01, 2011-B26, 2011-B33 & 2011-B34
2011 AL37JPL Sentry1732 Jan. 18R E M O V E DRisk listing removed at 1053 UTC 18 Jan.
Assessment postings were noted by A/CC on 14 Jan. & 18 Jan.   -   References: MPEC 2011-A63 plus DOUs 2011-B09, 2011-B11, 2011-B22, 2011-B26, 2011-B33, 2011-B34 & 2011-B44
2011 AH37NEODyS1700 Jan. 27R E M O V E D
Assessment postings were noted by A/CC on 15 Jan. & 27 Jan.   -   References: MPEC 2011-A60 plus DOUs 2011-B44 & 2011-B56
2011 AA37JPL Sentry1700 Jan. 27R E M O V E DRisk listing removed at 1216 UTC 27 Jan.
NEODyS1614 Jan. 15R E M O V E D
Assessment postings were noted by A/CC on 14 Jan., 15 Jan. & 27 Jan.   -   References: MPEC 2011-A55 plus DOUs 2011-A68, 2011-B44, 2011-B46 & 2011-B67
2011 AT26JPL Sentry1555 Jan. 14R E M O V E DRisk listing removed at 1052 UTC 14 Jan.
NEODyS1555 Jan. 14R E M O V E D
Assessment postings were noted by A/CC on 13 Jan. & 14 Jan.   -   References: MPEC 2011-A53 plus DOUs 2011-A52, 2011-A57 & 2011-B56
2011 AM24JPL Sentry1627 Jan. 23R E M O V E DRisk listing removed at 1051 UTC 23 Jan.
NEODyS1732 Jan. 18R E M O V E D
Assessment postings were noted by A/CC on 12 Jan., 13 Jan., 14 Jan., 18 Jan. & 23 Jan.   -   References: MPEC 2011-A49 plus DOUs 2011-A57, 2011-B09, 2011-B22, 2011-B33, 2011-B34, 2011-B46, 2011-B56, 2011-B67 & 2011-B72
2011 AA23NEODyS1632 Jan. 13R E M O V E D
JPL Sentry1632 Jan. 13R E M O V E DRisk listing removed at 1257 UTC 13 Jan.
Assessment postings were noted by A/CC on 11 Jan., 12 Jan. & 13 Jan.   -   References: MPEC 2011-A45 plus DOUs 2011-A52, 2011-A57 & 2011-B20
2011 AM12NEODyS1655 Jan. 22R E M O V E D
JPL Sentry1655 Jan. 22R E M O V E DRisk listing removed at 1051 UTC 22 Jan.
Assessment postings were noted by A/CC on 10 Jan., 12 Jan., 13 Jan., 14 Jan. & 22 Jan.   -   References: MPEC 2011-A36 plus DOUs 2011-A48, 2011-A52, 2011-A57, 2011-B20, 2011-B26, 2011-B44 & 2011-B56
2011 AL5NEODyS1550 Jan. 12R E M O V E D
JPL Sentry1550 Jan. 12R E M O V E DRisk listing removed at 1133 UTC 12 Jan.
Assessment postings were noted by A/CC on 9 Jan., 10 Jan. & 12 Jan.   -   References: MPEC 2011-A35 plus DOUs 2011-A48, 2011-A52, 2011-B44, 2011-B46 & 2011-B67
2011 AH3NEODyS1714 Jan. 9R E M O V E D
JPL Sentry1714 Jan. 9R E M O V E DRisk listing removed at 1130 UTC 9 Jan.
Assessment postings were noted by A/CC on 5 Jan., 6 Jan. & 9 Jan.   -   References: MPEC 2011-A22 plus DOUs 2011-A33, 2011-A37 & 2011-A52
2010 UE51JPL Sentry1614 Jan. 31R E M O V E DRisk listing removed at 1143 UTC 31 Jan.
Assessment postings were noted by A/CC on 10 Jan. & 31 Jan.   -   References: DOUs 2011-A37 & 2011-B72

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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