SOCRATES

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CelesTrak

Search parameters:

  • Name(s): Top 10 by Time In
  • Order by Start Time
  • Return first 10 items


Data current as of 2022 May 19 00:05 UTC

Computation Interval: Start = 2022 May 19 00:00:00.000, Stop = 2022 May 26 00:00:00.000
Computation Threshold: 5.0 km
Considering: 8,477 Primaries, 23,338 Secondaries (83,321 Conjunctions)

See notes at bottom of page for data field descriptions

Re-sort results by Maximum Probability, Minimum Range.

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)
43234 O3B FM13 [+] 0.749 4.163E-07 0.829 3.018 0.002
44113 O3B FM19 [+] 0.749 2022 May 19 00:00:00.000 2022 May 19 00:05:38.317 2022 May 19 00:36:17.436
49961 SHIJIAN-6 05A (SJ-6 05A) [+] 0.312 5.737E-07 0.654 2.774 0.003
49962 SHIJIAN-6 05B (SJ-6 05B) [+] 0.312 2022 May 19 00:00:00.000 2022 May 19 00:41:25.867 2022 May 26 00:00:00.000
52409 OBJECT R [+] 1.594 3.928E-05 0.081 0.329 0.001
52410 OBJECT S [+] 2.321 2022 May 19 00:00:00.000 2022 May 20 01:15:03.684 2022 May 22 18:02:51.447
52394 SPACEBEE-143 [+] 0.503 3.146E-06 0.326 1.013 0.001
52408 SPACEBEE-153 [+] 1.363 2022 May 19 00:00:00.000 2022 May 19 02:15:19.843 2022 May 19 03:03:01.425
37790 NIGERIASAT-X [+] 0.647 1.745E-07 1.203 4.954 3.855
22543 SL-16 DEB [-] 0.517 2022 May 19 00:00:03.387 2022 May 19 00:00:03.563 2022 May 19 00:00:03.738
19210 COSMOS 1953 [?] 0.400 1.148E-07 2.081 4.357 13.998
46569 STARLINK-1747 [+] 0.495 2022 May 19 00:00:10.722 2022 May 19 00:00:10.897 2022 May 19 00:00:11.072
42856 FLOCK 2K-45 [-] 0.199 1.234E-07 1.964 4.293 14.002
52466 STARLINK-3840 [+] 0.417 2022 May 19 00:00:26.036 2022 May 19 00:00:26.219 2022 May 19 00:00:26.402
08026 METEOR 2-1 [?] 0.798 3.884E-06 1.407 2.242 14.611
42387 NOAA 16 DEB [-] 0.512 2022 May 19 00:00:35.033 2022 May 19 00:00:35.338 2022 May 19 00:00:35.644
33499 KKS-1 (KISEKI) [+] 0.451 1.025E-07 2.448 4.142 14.629
38782 VRSS-1 [+] 0.193 2022 May 19 00:00:45.661 2022 May 19 00:00:45.852 2022 May 19 00:00:46.044
48887 SPACEBEENZ-9 [+] 0.413 2.560E-07 1.013 4.013 5.770
43844 OBJECT P [-] 0.320 2022 May 19 00:00:55.203 2022 May 19 00:00:55.720 2022 May 19 00:00:56.237

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.