SOCRATES

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CelesTrak

Search parameters:

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


Data current as of 2022 Jan 19 16:05 UTC

Computation Interval: Start = 2022 Jan 19 12:00:00.000, Stop = 2022 Jan 26 12:00:00.000
Computation Threshold: 5.0 km
Considering: 7,770 Primaries, 22,955 Secondaries (77,207 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)
50808 STARLINK-3355 [+] 4.109 3.184E-02 0.003 0.011 0.001
50810 STARLINK-3348 [+] 4.026 2022 Jan 23 10:22:54.804 2022 Jan 23 14:36:45.401 2022 Jan 23 16:53:06.643
45074 STARLINK-1172 [+] 7.412 1.181E-02 0.005 0.019 4.638
47839 STARLINK-2431 [+] 6.687 2022 Jan 26 05:33:43.071 2022 Jan 26 05:33:44.149 2022 Jan 26 05:33:45.227
21819 INTERCOSMOS 25 [?] 3.088 1.159E-02 0.028 0.095 9.797
49682 COSMOS 1408 DEB [-] 3.072 2022 Jan 21 22:08:43.240 2022 Jan 21 22:08:43.750 2022 Jan 21 22:08:44.260
46692 STARLINK-1791 [+] 2.275 1.113E-02 0.005 0.019 4.648
47152 STARLINK-1866 [+] 2.004 2022 Jan 21 02:12:40.236 2022 Jan 21 02:12:41.312 2022 Jan 21 02:12:42.388
45395 STARLINK-1297 [+] 4.829 1.049E-02 0.005 0.020 4.636
48473 STARLINK-2658 [+] 4.824 2022 Jan 24 08:44:29.930 2022 Jan 24 08:44:31.009 2022 Jan 24 08:44:32.087
45094 STARLINK-1146 [+] 6.057 9.807E-03 0.005 0.021 4.645
47158 STARLINK-1873 [+] 5.653 2022 Jan 24 22:35:15.411 2022 Jan 24 22:35:16.487 2022 Jan 24 22:35:17.563
42847 CORVUS BC1 [+] 2.824 9.024E-03 0.008 0.014 14.886
36365 YAOGAN 1 DEB [-] 2.648 2022 Jan 21 16:58:32.062 2022 Jan 21 16:58:32.398 2022 Jan 21 16:58:32.734
27643 CHIPSAT [?] 6.854 7.063E-03 0.006 0.023 8.619
44920 STARLINK-1102 [+] 6.324 2022 Jan 25 17:57:18.686 2022 Jan 25 17:57:19.266 2022 Jan 25 17:57:19.846
47351 STARLINK-2017 [+] 4.335 3.643E-03 0.009 0.031 9.301
48658 STARLINK-2647 [+] 4.455 2022 Jan 23 20:40:52.404 2022 Jan 23 20:40:52.942 2022 Jan 23 20:40:53.480
46672 STARLINK-1716 [+] 4.333 3.336E-03 0.009 0.034 6.964
46780 STARLINK-1832 [+] 4.060 2022 Jan 23 02:32:22.284 2022 Jan 23 02:32:23.002 2022 Jan 23 02:32:23.720

10 records found

Data Fields:
  • Action: The TLE Data button links to a page which provides the TLEs used to generate the associated prediction.
  • 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.