SOCRATES

Search Results

CelesTrak

Search parameters:

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


Data current as of 2022 Jun 25 00:05 UTC

Computation Interval: Start = 2022 Jun 25 00:00:00.000, Stop = 2022 Jul 02 00:00:00.000
Computation Threshold: 5.0 km
Considering: 8,689 Primaries, 23,336 Secondaries (78,736 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) [+] 3.761 4.639E-02 0.002 0.009 0.000
49962 SHIJIAN-6 05B (SJ-6 05B) [+] 3.761 2022 Jun 25 00:00:00.000 2022 Jun 28 07:47:03.542 2022 Jul 02 00:00:00.000
44726 STARLINK-1021 [+] 7.578 1.823E-02 0.004 0.015 4.644
48584 STARLINK-2238 [+] 7.384 2022 Jul 01 21:55:31.294 2022 Jul 01 21:55:32.370 2022 Jul 01 21:55:33.447
50168 STARLINK-3296 [+] 2.339 1.052E-02 0.005 0.019 6.981
51734 STARLINK-3450 [+] 2.121 2022 Jun 26 16:54:44.666 2022 Jun 26 16:54:45.383 2022 Jun 26 16:54:46.099
41968 FLOCK 3P-3 [+] 4.908 7.432E-03 0.006 0.021 10.059
36654 FENGYUN 1C DEB [-] 6.398 2022 Jun 29 01:30:11.258 2022 Jun 29 01:30:11.755 2022 Jun 29 01:30:12.252
44765 STARLINK-1060 [+] 3.602 6.361E-03 0.006 0.026 4.655
47836 STARLINK-2426 [+] 3.796 2022 Jun 28 06:30:52.559 2022 Jun 28 06:30:53.634 2022 Jun 28 06:30:54.708
44947 STARLINK-1116 [+] 7.016 4.964E-03 0.007 0.030 0.528
46361 STARLINK-1722 [+] 6.817 2022 Jul 01 13:00:39.754 2022 Jul 01 13:00:49.217 2022 Jul 01 13:00:58.680
44953 STARLINK-1124 [+] 4.232 4.430E-03 0.008 0.031 4.145
45230 STARLINK-1227 [+] 4.028 2022 Jun 28 17:11:23.217 2022 Jun 28 17:11:24.423 2022 Jun 28 17:11:25.630
31132 CP4 [-] 5.880 2.777E-03 0.012 0.031 12.698
35032 COSMOS 2251 DEB [-] 6.213 2022 Jun 30 16:53:10.570 2022 Jun 30 16:53:10.964 2022 Jun 30 16:53:11.357
45781 STARLINK-1497 [+] 6.383 3.299E-03 0.009 0.036 4.645
48139 STARLINK-2482 [+] 6.455 2022 Jun 30 18:07:33.241 2022 Jun 30 18:07:34.317 2022 Jun 30 18:07:35.394
45411 STARLINK-1293 [+] 7.415 3.461E-03 0.008 0.036 0.259
52561 STARLINK-3955 [+] 6.972 2022 Jul 01 21:18:55.691 2022 Jul 01 21:19:14.970 2022 Jul 01 21:19:34.249

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.