SOCRATES

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CelesTrak

Search parameters:

  • Name(s): Top 10 by Minimum Range
  • Order by Minimum Range
  • Return first 10 items


Data current as of 2022 Aug 10 00:05 UTC

Computation Interval: Start = 2022 Aug 10 00:00:00.000, Stop = 2022 Aug 17 00:00:00.000
Computation Threshold: 5.0 km
Considering: 8,984 Primaries, 23,577 Secondaries (94,784 Conjunctions)

See notes at bottom of page for data field descriptions

Re-sort results by Maximum Probability, 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)
49961 SHIJIAN-6 05A (SJ-6 05A) [+] 0.842 5.375E-02 0.002 0.009 0.000
49962 SHIJIAN-6 05B (SJ-6 05B) [+] 0.842 2022 Aug 10 00:00:00.000 2022 Aug 10 12:17:28.065 2022 Aug 11 12:14:57.583
47358 STARLINK-2055 [+] 6.523 3.697E-02 0.003 0.010 6.547
48092 STARLINK-2048 [+] 6.979 2022 Aug 16 08:07:40.885 2022 Aug 16 08:07:41.649 2022 Aug 16 08:07:42.413
46723 STARLINK-1826 [+] 5.886 2.381E-02 0.003 0.013 4.636
48094 STARLINK-2412 [+] 5.957 2022 Aug 15 13:29:41.702 2022 Aug 15 13:29:42.781 2022 Aug 15 13:29:43.859
44923 STARLINK-1106 [+] 6.382 2.358E-02 0.003 0.013 6.964
46130 STARLINK-1624 [+] 6.058 2022 Aug 15 18:44:41.948 2022 Aug 15 18:44:42.666 2022 Aug 15 18:44:43.384
13148 COSMOS 1354 [?] 6.693 3.417E-02 0.005 0.015 10.915
39586 COSMOS 2251 DEB [-] 9.130 2022 Aug 15 22:26:33.029 2022 Aug 15 22:26:33.487 2022 Aug 15 22:26:33.946
46782 STARLINK-1835 [+] 7.080 9.550E-03 0.005 0.021 4.144
47912 STARLINK-2372 [+] 6.952 2022 Aug 16 16:08:14.867 2022 Aug 16 16:08:16.074 2022 Aug 16 16:08:17.280
46062 STARLINK-1574 [+] 7.047 7.277E-03 0.006 0.024 4.644
47667 STARLINK-2058 [+] 7.185 2022 Aug 16 11:55:08.185 2022 Aug 16 11:55:09.262 2022 Aug 16 11:55:10.339
47876 STARLINK-2332 [+] 5.751 6.409E-03 0.007 0.025 6.926
48481 STARLINK-2706 [+] 5.959 2022 Aug 15 07:42:58.137 2022 Aug 15 07:42:58.859 2022 Aug 15 07:42:59.581
46124 STARLINK-1614 [+] 6.450 6.890E-03 0.006 0.025 4.643
47803 STARLINK-2384 [+] 6.720 2022 Aug 16 04:34:39.073 2022 Aug 16 04:34:40.150 2022 Aug 16 04:34:41.227
05614 COSMOS 457 [?] 4.525 2.612E-03 0.016 0.026 14.181
49001 ONEWEB-0283 [+] 4.551 2022 Aug 13 19:02:23.635 2022 Aug 13 19:02:23.987 2022 Aug 13 19:02:24.340

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.