SOCRATES

Search Results


Search parameters:

  • Name(s): Top 10 by Minimum Range
  • Order by Minimum Range
  • Return first 10 items


Data current as of 2019 Jul 17 08:06 UTC

Computation Interval: Start = 2019 Jul 17 00:00:00.000, Stop = 2019 Jul 24 00:00:00.000
Computation Threshold: 5.0 km
Considering: 4,789 Primaries, 17,572 Secondaries (28,406 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)
26620 SAC-C [-] 2.819 2.253E-03 0.014 0.020 14.948
34308 COSMOS 2251 DEB [-] 2.807 2019 Jul 19 06:55:27.451 2019 Jul 19 06:55:27.786 2019 Jul 19 06:55:28.120
26032 ARIRANG-1 (KOMPSAT-1) [-] 0.419 2.034E-03 0.017 0.030 14.581
31385 FENGYUN 1C DEB [-] 1.036 2019 Jul 17 07:49:25.575 2019 Jul 17 07:49:25.918 2019 Jul 17 07:49:26.261
44207 TIANHUI 2-01A [+] 0.809 2.784E-03 0.009 0.040 0.000
44209 TIANHUI 2-01B [+] 2.248 2019 Jul 17 00:00:00.000 2019 Jul 17 18:49:41.587 2019 Jul 21 04:57:54.100
41963 FLOCK 3P-27 [+] 1.788 2.170E-03 0.011 0.045 0.003
42007 FLOCK 3P-43 [+] 1.788 2019 Jul 18 15:30:18.541 2019 Jul 18 15:52:11.614 2019 Jul 18 16:51:18.902
28455 RITE TARGET 2 [?] 8.821 3.315E-04 0.034 0.091 12.405
36292 CZ-2D DEB [-] 7.517 2019 Jul 23 22:09:41.910 2019 Jul 23 22:09:42.313 2019 Jul 23 22:09:42.716
44094 FLOCK 4A-6 [+] -0.110 1.855E-04 0.060 0.094 15.051
34788 COSMOS 2251 DEB [-] -0.083 2019 Jul 17 00:01:47.122 2019 Jul 17 00:01:47.454 2019 Jul 17 00:01:47.786
22626 COSMOS 2242 [?] 0.380 1.596E-04 0.068 0.096 15.101
29925 FENGYUN 1C DEB [-] 0.912 2019 Jul 17 11:51:02.436 2019 Jul 17 11:51:02.767 2019 Jul 17 11:51:03.098
12643 COSMOS 1294 [?] 1.542 1.885E-04 0.038 0.100 11.916
03767 DELTA 1 R/B [-] 0.762 2019 Jul 17 21:22:34.444 2019 Jul 17 21:22:34.863 2019 Jul 17 21:22:35.283
43792 ESEO [+] 1.095 1.516E-04 0.065 0.105 14.856
43880 UWE-4 [+] 1.079 2019 Jul 17 20:44:04.373 2019 Jul 17 20:44:04.710 2019 Jul 17 20:44:05.046
16181 COSMOS 1697 [?] 1.262 3.515E-04 0.028 0.107 6.670
30608 FENGYUN 1C DEB [-] 0.825 2019 Jul 17 18:16:35.871 2019 Jul 17 18:16:36.621 2019 Jul 17 18:16:37.370

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.

TLE Data Space Data
Current GPS
Archives EOP
Documentation Space Weather
SATCAT Columns
Boxscore Software
SOCRATES
We do not use cookies on CelesTrak and we do not collect any personal information, other than IP addresses, which are used to detect and block malicious activity and to assess system performance. We do not use IP addresses for tracking or any other purposes. No personal data is shared with third parties. For further details, see AGI's privacy policy.

Dr. T.S. Kelso [TS.Kelso@celestrak.com]
Follow CelesTrak on Twitter @TSKelso
Last updated: 2019 Jul 17 09:43:04 UTC
Accessed 1 times since 2000 December 16
Current system time: 2019 Jul 17 17:08:39 UTC