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 Dec 04 00:05 UTC

Computation Interval: Start = 2022 Dec 04 00:00:00.000, Stop = 2022 Dec 11 00:00:00.000
Computation Threshold: 5.0 km
Considering: 9,626 Primaries, 23,591 Secondaries (97,237 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)
22161 FREJA [?] 1.982 6.547E-02 0.002 0.006 12.326
48093 STARLINK-2404 [+] 1.931 2022 Dec 05 11:49:49.158 2022 Dec 05 11:49:49.564 2022 Dec 05 11:49:49.970
43188 S-NET A [+] 3.172 9.660E-03 0.009 0.012 15.132
33879 IRIDIUM 33 DEB [-] 3.136 2022 Dec 06 15:23:37.973 2022 Dec 06 15:23:38.303 2022 Dec 06 15:23:38.633
46543 STARLINK-1693 [+] 7.052 1.776E-02 0.004 0.015 4.644
46702 STARLINK-1802 [+] 6.914 2022 Dec 10 12:00:12.200 2022 Dec 10 12:00:13.277 2022 Dec 10 12:00:14.353
44207 TIANHUI 2-01A [+] 0.100 1.044E-02 0.005 0.020 0.000
44209 TIANHUI 2-01B [+] 0.160 2022 Dec 04 00:00:00.000 2022 Dec 04 00:03:30.213 2022 Dec 11 00:00:00.000
52558 STARLINK-3954 [+] 3.412 3.756E-03 0.013 0.022 14.692
47953 OBJECT X [-] 3.101 2022 Dec 06 22:35:15.539 2022 Dec 06 22:35:15.879 2022 Dec 06 22:35:16.220
44929 STARLINK-1121 [+] 7.384 6.857E-03 0.006 0.025 4.644
47554 STARLINK-1953 [+] 7.246 2022 Dec 10 16:29:30.256 2022 Dec 10 16:29:31.332 2022 Dec 10 16:29:32.409
48986 ONEWEB-0268 [+] 4.654 2.906E-03 0.014 0.026 13.834
43332 SCOUT G-1 DEB [-] 22.774 2022 Dec 08 02:51:26.837 2022 Dec 08 02:51:27.198 2022 Dec 08 02:51:27.560
46544 STARLINK-1694 [+] 4.758 6.053E-03 0.006 0.026 4.636
48599 STARLINK-2274 [+] 4.630 2022 Dec 08 03:15:21.348 2022 Dec 08 03:15:22.426 2022 Dec 08 03:15:23.505
45735 STARLINK-1471 [+] 5.521 6.014E-03 0.007 0.026 4.645
48467 STARLINK-2659 [+] 5.061 2022 Dec 08 12:46:27.990 2022 Dec 08 12:46:29.067 2022 Dec 08 12:46:30.143
48928 PAINANI-2 [+] 2.543 2.700E-03 0.014 0.027 14.452
54165 STARLINK-5279 [+] 2.218 2022 Dec 06 03:13:46.895 2022 Dec 06 03:13:47.241 2022 Dec 06 03:13:47.587

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.