SOCRATES

Search Results


Search parameters:

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


Data current as of 2019 Jun 26 00:06 UTC

Computation Interval: Start = 2019 Jun 26 00:00:00.000, Stop = 2019 Jul 03 00:00:00.000
Computation Threshold: 5.0 km
Considering: 4,711 Primaries, 17,485 Secondaries (27,907 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)
25489 STEX [-] 7.128 1.000E+00 0.000 1.577 14.901
31883 FENGYUN 1C DEB [-] 5.939 2019 Jul 01 19:16:50.392 2019 Jul 01 19:16:50.710 2019 Jul 01 19:16:51.029
25489 STEX [-] 1.387 1.000E+00 0.000 2.641 14.664
34396 COSMOS 2251 DEB [-] 1.056 2019 Jun 26 01:29:57.886 2019 Jun 26 01:29:58.175 2019 Jun 26 01:29:58.465
25489 STEX [-] 1.466 1.000E+00 0.000 0.734 14.717
30105 FENGYUN 1C DEB [-] 0.371 2019 Jun 26 03:23:53.296 2019 Jun 26 03:23:53.632 2019 Jun 26 03:23:53.969
25489 STEX [-] 3.105 1.000E+00 0.000 1.339 15.013
30109 FENGYUN 1C DEB [-] 1.937 2019 Jun 27 18:44:45.044 2019 Jun 27 18:44:45.365 2019 Jun 27 18:44:45.686
18665 COSMOS 1900 [?] 4.285 1.000E+00 0.000 2.390 12.902
25489 STEX [-] 4.984 2019 Jun 29 15:50:38.547 2019 Jun 29 15:50:38.887 2019 Jun 29 15:50:39.228
25489 STEX [-] 5.191 1.000E+00 0.000 2.402 14.260
33911 COSMOS 2251 DEB [-] 5.484 2019 Jun 29 20:47:37.190 2019 Jun 29 20:47:37.498 2019 Jun 29 20:47:37.805
25489 STEX [-] 2.816 3.833E-01 1.119 3.359 12.778
41060 NOAA 16 DEB [-] 2.293 2019 Jun 27 11:48:09.719 2019 Jun 27 11:48:10.009 2019 Jun 27 11:48:10.299
25489 STEX [-] 2.332 3.762E-01 1.158 3.364 13.167
31898 FENGYUN 1C DEB [-] 4.900 2019 Jun 27 00:11:48.277 2019 Jun 27 00:11:48.558 2019 Jun 27 00:11:48.839
25489 STEX [-] 7.998 2.952E-01 1.202 4.368 5.477
36543 COSMOS 2251 DEB [-] 7.460 2019 Jul 02 16:10:48.466 2019 Jul 02 16:10:48.910 2019 Jul 02 16:10:49.354
25489 STEX [-] 4.412 2.877E-01 1.627 3.487 14.937
17702 ARIANE 1 DEB [-] 4.947 2019 Jun 29 02:06:54.716 2019 Jun 29 02:06:54.956 2019 Jun 29 02:06:55.196

10 records found

Data Fields:
  • Action: The Analysis button links to a page which provides a capability to build an interactive 3-D STK/CAT (Conjunction Analysis Tools) scenario detailing the conjunction.
  • 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.

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Dr. T.S. Kelso [TS.Kelso@celestrak.com]
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Last updated: 2019 Jun 26 01:41:07 UTC
Accessed 1 times since 2000 December 16
Current system time: 2019 Jun 26 02:32:08 UTC