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 Aug 18 08:05 UTC

Computation Interval: Start = 2022 Aug 18 00:00:00.000, Stop = 2022 Aug 25 00:00:00.000
Computation Threshold: 5.0 km
Considering: 9,051 Primaries, 23,611 Secondaries (92,195 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)
47607 STARLINK-2025 [+] 6.722 2.150E-01 0.001 0.004 6.962
48287 STARLINK-2566 [+] 6.448 2022 Aug 23 18:21:36.351 2022 Aug 23 18:21:37.069 2022 Aug 23 18:21:37.787
50206 STARLINK-3258 [+] 4.126 1.719E-02 0.004 0.015 4.657
52620 STARLINK-3975 [+] 3.966 2022 Aug 21 15:10:58.400 2022 Aug 21 15:10:59.474 2022 Aug 21 15:11:00.547
46674 STARLINK-1718 [+] 4.725 1.037E-02 0.005 0.020 4.157
47744 STARLINK-2158 [+] 4.730 2022 Aug 22 04:11:29.147 2022 Aug 22 04:11:30.350 2022 Aug 22 04:11:31.553
29710 CARTOSAT-2 (IRS-P7) [+] 7.313 5.153E-03 0.010 0.021 13.902
48299 STARLINK-2557 [+] 7.342 2022 Aug 24 14:46:03.919 2022 Aug 24 14:46:04.279 2022 Aug 24 14:46:04.639
45061 STARLINK-1169 [+] 6.052 8.937E-03 0.005 0.022 4.151
45103 STARLINK-1196 [+] 6.056 2022 Aug 23 13:13:11.050 2022 Aug 23 13:13:12.254 2022 Aug 23 13:13:13.459
52346 STARLINK-3812 [+] 3.073 7.485E-03 0.006 0.023 6.980
52539 STARLINK-3757 [+] 3.073 2022 Aug 20 17:44:28.190 2022 Aug 20 17:44:28.906 2022 Aug 20 17:44:29.622
26086 DUMSAT [?] 3.519 4.688E-03 0.010 0.023 13.299
49167 STARLINK-3054 [+] 3.197 2022 Aug 20 15:28:01.826 2022 Aug 20 15:28:02.202 2022 Aug 20 15:28:02.578
45551 STARLINK-1294 [+] 7.478 3.689E-03 0.008 0.034 4.637
47595 STARLINK-2000 [+] 7.085 2022 Aug 24 13:58:57.240 2022 Aug 24 13:58:58.319 2022 Aug 24 13:58:59.397
51105 STARLINK-3350 [+] 4.461 2.921E-03 0.010 0.035 9.322
51960 STARLINK-3691 [+] 4.282 2022 Aug 21 22:46:01.156 2022 Aug 21 22:46:01.693 2022 Aug 21 22:46:02.229
47889 STARLINK-2349 [+] 6.057 2.809E-03 0.010 0.039 4.646
48009 STARLINK-2153 [+] 6.051 2022 Aug 23 14:12:29.759 2022 Aug 23 14:12:30.835 2022 Aug 23 14:12:31.912

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.