SOCRATES

Search Results


Search parameters:

  • Name(s): Top 10 by Maximum Probability
  • Order by Maximum Probability
  • Return first 10 items


Data current as of 2020 May 27 00:05 UTC

Computation Interval: Start = 2020 May 27 00:00:00.000, Stop = 2020 Jun 03 00:00:00.000
Computation Threshold: 5.0 km
Considering: 5,401 Primaries, 18,601 Secondaries (31,785 Conjunctions)

See notes at bottom of page for data field descriptions

Re-sort results by Minimum Range, Time In.

Action NORAD
Catalog
Number
Name Days
Since
Epoch
Max
Probability
Dilution
Threshold
(km)
Min
Range
(km)
Relative
Velocity
(km/sec)
Start
(UTC)
TCA
(UTC)
Stop
(UTC)
20670 METEOR 2-19 [?] 6.272 1.346E-01 0.005 0.017 5.986
30170 FENGYUN 1C DEB [-] 8.337 2020 Jun 02 00:05:32.072 2020 Jun 02 00:05:32.907 2020 Jun 02 00:05:33.742
39057 COSMOS 2482 [+] 2.078 8.528E-03 0.007 0.017 12.414
21253 SL-8 DEB [-] 2.420 2020 May 28 12:23:51.462 2020 May 28 12:23:51.865 2020 May 28 12:23:52.268
28895 CUBESAT XI-V [+] 4.257 7.179E-03 0.007 0.021 10.392
39624 SJ-11-06 [+] 4.542 2020 May 31 01:40:29.673 2020 May 31 01:40:30.154 2020 May 31 01:40:30.635
05104 ISIS 2 [?] 4.330 7.011E-03 0.187 0.290 14.112
15005 COSMOS 1566 [?] 4.225 2020 May 30 18:15:57.035 2020 May 30 18:15:57.388 2020 May 30 18:15:57.742
03129 COSMOS 203 [?] 7.825 5.381E-03 0.021 0.080 6.859
12458 NOVA 1 [?] 5.521 2020 May 31 22:41:56.261 2020 May 31 22:41:56.990 2020 May 31 22:41:57.719
00205 TRAAC [?] 3.573 5.011E-03 0.072 0.207 11.389
35326 CZ-4B DEB [-] 8.192 2020 May 30 09:26:58.685 2020 May 30 09:26:59.123 2020 May 30 09:26:59.562
06173 TRIAD 1 [?] 4.930 2.452E-03 0.034 0.109 10.467
13571 DELTA 1 DEB [-] 8.843 2020 May 31 16:57:32.669 2020 May 31 16:57:33.147 2020 May 31 16:57:33.624
20432 COSMOS 2056 [?] 4.995 2.436E-03 0.023 0.094 4.311
25414 ORBCOMM FM18 [+] 4.573 2020 May 31 07:30:24.021 2020 May 31 07:30:25.180 2020 May 31 07:30:26.340
44873 CSG-1 [+] 0.284 1.091E-03 0.040 0.057 15.095
14552 SL-14 R/B [-] 0.492 2020 May 27 01:53:06.049 2020 May 27 01:53:06.380 2020 May 27 01:53:06.712
07714 METEOR 1-21 [?] 3.600 1.088E-03 0.072 0.157 13.412
34997 COSMOS 2251 DEB [-] 4.050 2020 May 29 05:24:37.681 2020 May 29 05:24:38.054 2020 May 29 05:24:38.426

10 records found

Data Fields:
  • Action: The Analysis button links to a page which provides a capability to build an interactive 3-D STK/CAT (Conjunction Analysis Tools) scenario detailing the conjunction.
  • NORAD Catalog Number: NORAD Catalog Numbers of the two conjuncting objects.
  • Name: Common names of the two conjuncting objects. Operational status of each object is shown in brackets, using the standard CelesTrak SATCAT codes.
  • Days Since Epoch: The number of days from the epoch of the NORAD two-line element set or operator ephemerides (green) used to produce the prediction until the time of closest approach for the conjunction.
  • Max Probability: Given fixed spherical object radii and relative distance at the time of closest approach (TCA), the projected covariance ellipse is sized and oriented to produce the maximum probability. For these reports the ratio of major-to-minor axes of the projected covariance ellipse is set using radial, in-track, and cross-track values of 100 m, 300 m, 100 m, respectively. If the combined object radius is greater than the relative distance, the maximum probability will be one; such occurrences are not addressed here.
  • Dilution Threshold (km): The standard deviation that produces the maximum probability defines the threshold of dilution. A smaller or larger standard deviation will produce a smaller probability. In the case of computing true probability with a smaller standard deviation, the data is of sufficient quality to associate low probability with low risk. For a larger standard deviation, this is not the case and the resulting true probability calculation becomes "diluted." If operating in this dilution region, the recommendation is to obtain better data and reassess the encounter. If time or resources do not permit, then the maximum probability should be used in place of the true probability.
  • Min Range (km): The distance between the two conjuncting objects at the time of closest approach.
  • Start (UTC): Time when the two conjuncting objects come within the computation threshold from each other.
  • TCA (UTC): Time of closest approach.
  • Stop (UTC): Time when the two conjuncting objects move beyond the computation threshold from each other.
  • Relative Velocity (km/sec): Relative velocity of the two conjuncting objects at the time of closest approach.

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Dr. T.S. Kelso [TS.Kelso@celestrak.com]
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Last updated: 2020 May 27 02:51:58 UTC
Accessed 1 times since 2000 December 16
Current system time: 2020 May 27 09:32:06 UTC