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 Aug 14 00:05 UTC

Computation Interval: Start = 2022 Aug 14 00:00:00.000, Stop = 2022 Aug 21 00:00:00.000
Computation Threshold: 5.0 km
Considering: 9,001 Primaries, 23,572 Secondaries (95,310 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)
45683 STARLINK-1399 [+] 4.665 4.059E-02 0.003 0.010 6.962
46028 STARLINK-1523 [+] 4.391 2022 Aug 17 20:30:07.107 2022 Aug 17 20:30:07.826 2022 Aug 17 20:30:08.544
52767 CNCE4 [+] 5.574 2.784E-02 0.003 0.012 0.000
52768 CNCE5 [+] 5.574 2022 Aug 18 04:51:29.361 2022 Aug 19 02:44:07.100 2022 Aug 19 20:55:22.645
46727 STARLINK-1830 [+] 4.890 1.077E-02 0.005 0.020 4.638
48116 STARLINK-2454 [+] 4.896 2022 Aug 18 09:36:36.292 2022 Aug 18 09:36:37.370 2022 Aug 18 09:36:38.448
47950 NANOSATC-BR2 [+] 7.059 1.014E-02 0.005 0.021 0.083
47946 OBJECT Q [-] 6.993 2022 Aug 20 14:13:18.484 2022 Aug 20 14:14:18.693 2022 Aug 20 14:15:18.902
42901 VENUS [+] 2.743 8.860E-03 0.006 0.019 11.362
46040 STARLINK-1576 [+] 2.802 2022 Aug 16 04:51:46.880 2022 Aug 16 04:51:47.320 2022 Aug 16 04:51:47.760
46040 STARLINK-1576 [+] 5.687 8.708E-03 0.005 0.022 4.636
48289 STARLINK-2545 [+] 5.824 2022 Aug 19 02:05:09.728 2022 Aug 19 02:05:10.807 2022 Aug 19 02:05:11.885
25113 ORBCOMM FM10 [+] 3.246 8.132E-03 0.010 0.036 8.934
34775 IRIDIUM 33 DEB [-] 3.586 2022 Aug 16 19:07:30.919 2022 Aug 16 19:07:31.479 2022 Aug 16 19:07:32.038
46168 STARLINK-1627 [+] 2.801 7.254E-03 0.006 0.024 4.653
46719 STARLINK-1822 [+] 2.872 2022 Aug 16 09:27:52.989 2022 Aug 16 09:27:54.064 2022 Aug 16 09:27:55.138
43772 RANGE-A [+] 7.214 6.961E-03 0.008 0.018 13.755
44857 RISAT-2BR1 [+] 7.171 2022 Aug 20 09:44:02.861 2022 Aug 20 09:44:03.225 2022 Aug 20 09:44:03.588
51140 STARLINK-3175 [+] 4.514 6.740E-03 0.007 0.023 9.324
52346 STARLINK-3812 [+] 4.384 2022 Aug 17 23:13:00.430 2022 Aug 17 23:13:00.966 2022 Aug 17 23:13:01.502

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.