SOCRATES

Search Results

CelesTrak

Search parameters:

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


Data current as of 2022 Dec 09 08:05 UTC

Computation Interval: Start = 2022 Dec 09 00:00:00.000, Stop = 2022 Dec 16 00:00:00.000
Computation Threshold: 5.0 km
Considering: 9,628 Primaries, 23,646 Secondaries (120,394 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)
14064 COSMOS 1461 [?] 1.824 3.333E-01 0.008 0.025 11.375
04227 THORAD AGENA D DEB [-] 1.896 2022 Dec 10 13:09:56.079 2022 Dec 10 13:09:56.518 2022 Dec 10 13:09:56.958
45223 STARLINK-1212 [+] 2.203 1.533E-02 0.004 0.016 4.643
46744 STARLINK-1894 [+] 2.872 2022 Dec 11 08:08:13.493 2022 Dec 11 08:08:14.570 2022 Dec 11 08:08:15.647
46794 STARLINK-1942 [+] 5.925 1.219E-02 0.005 0.018 6.964
47382 STARLINK-2102 [+] 5.718 2022 Dec 14 08:49:23.897 2022 Dec 14 08:49:24.615 2022 Dec 14 08:49:25.333
45377 STARLINK-1305 [+] 6.877 1.192E-02 0.005 0.017 9.283
45674 STARLINK-1457 [+] 6.757 2022 Dec 15 11:40:31.128 2022 Dec 15 11:40:31.667 2022 Dec 15 11:40:32.205
17369 COSMOS 1818 [?] 6.732 8.991E-03 0.064 0.173 12.173
39661 COSMOS 1867 COOLANT [-] 6.643 2022 Dec 15 04:10:27.733 2022 Dec 15 04:10:28.143 2022 Dec 15 04:10:28.554
46150 STARLINK-1629 [+] 2.899 8.357E-03 0.006 0.022 6.511
47846 STARLINK-2456 [+] 3.636 2022 Dec 11 22:28:48.346 2022 Dec 11 22:28:49.113 2022 Dec 11 22:28:49.881
51288 ELSA-D CLIENT [+] 1.059 5.897E-03 0.010 0.018 14.682
52555 STARLINK-3949 [+] 0.300 2022 Dec 09 04:54:37.913 2022 Dec 09 04:54:38.253 2022 Dec 09 04:54:38.594
53357 PRC TEST SPACECRAFT 2 [+] 0.753 5.106E-03 0.007 0.029 0.001
54218 OBJECT J [-] 0.887 2022 Dec 09 00:00:00.000 2022 Dec 09 06:11:35.530 2022 Dec 12 01:47:29.733
45233 STARLINK-1238 [+] 6.720 4.902E-03 0.007 0.029 4.644
48689 STARLINK-2617 [+] 6.914 2022 Dec 15 15:49:29.777 2022 Dec 15 15:49:30.854 2022 Dec 15 15:49:31.930
45742 STARLINK-1481 [+] 6.061 4.612E-03 0.008 0.028 9.630
48392 STARLINK-2605 [+] 6.047 2022 Dec 15 03:15:47.152 2022 Dec 15 03:15:47.671 2022 Dec 15 03:15:48.190

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.