SOCRATES

Search Results


Search parameters:

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


Data current as of 2020 Jun 01 16:05 UTC

Computation Interval: Start = 2020 Jun 01 12:00:00.000, Stop = 2020 Jun 08 12:00:00.000
Computation Threshold: 5.0 km
Considering: 5,402 Primaries, 18,599 Secondaries (31,862 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)
45595 PROGRESS-MS 14 [+] 1.224 1.000E+00 0.000 0.000 0.000
45623 CREW DRAGON DEMO-2 [+] 1.224 2020 Jun 01 12:00:00.000 2020 Jun 01 12:00:00.000 2020 Jun 08 12:00:00.000
44833 PROGRESS-MS 13 [+] 1.224 1.000E+00 0.000 0.000 0.000
45623 CREW DRAGON DEMO-2 [+] 1.224 2020 Jun 01 12:00:00.000 2020 Jun 01 12:00:00.000 2020 Jun 08 12:00:00.000
45476 SOYUZ-MS 16 [+] 1.224 1.000E+00 0.000 0.000 0.000
45623 CREW DRAGON DEMO-2 [+] 1.224 2020 Jun 01 12:00:00.000 2020 Jun 01 12:00:00.000 2020 Jun 08 12:00:00.000
45607 HTV-9 (KOUNOTORI 9) [+] 1.224 1.000E+00 0.000 0.000 0.000
45623 CREW DRAGON DEMO-2 [+] 1.224 2020 Jun 01 12:00:00.000 2020 Jun 01 12:00:00.000 2020 Jun 08 12:00:00.000
44484 AEROCUBE 10B (DOUGSAT) [+] 3.052 1.014E-02 0.005 0.021 0.000
44485 AEROCUBE 10A (JIMSAT) [+] 4.032 2020 Jun 01 12:00:00.000 2020 Jun 04 09:42:29.214 2020 Jun 08 12:00:00.000
44754 STARLINK-1049 [+] 7.024 4.393E-03 0.010 0.023 13.679
30098 FENGYUN 1C DEB [-] 8.818 2020 Jun 08 09:28:11.768 2020 Jun 08 09:28:12.134 2020 Jun 08 09:28:12.499
25159 ORBCOMM FM04 [+] 5.442 6.491E-03 0.018 0.026 14.869
33995 COSMOS 2251 DEB [-] 5.313 2020 Jun 05 18:37:18.136 2020 Jun 05 18:37:18.472 2020 Jun 05 18:37:18.809
03093 EXPLORER 36 (GEOS 2) [?] 7.756 3.604E-03 0.032 0.045 14.037
11051 SL-8 R/B [-] 7.182 2020 Jun 07 21:21:38.467 2020 Jun 07 21:21:38.824 2020 Jun 07 21:21:39.180
44811 FLOCK 4P-4 [+] 3.115 1.379E-03 0.016 0.046 12.057
25795 COSMOS 1220 DEB [-] 3.070 2020 Jun 03 20:44:18.902 2020 Jun 03 20:44:19.316 2020 Jun 03 20:44:19.731
25986 ORBCOMM FM34 [-] 4.549 2.206E-02 0.017 0.051 11.429
22830 ARIANE 40 R/B [-] 4.203 2020 Jun 04 22:33:28.262 2020 Jun 04 22:33:28.699 2020 Jun 04 22:33:29.137

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: 2020 Jun 01 18:54:44 UTC
Accessed 1 times since 2000 December 16
Current system time: 2020 Jun 02 01:36:08 UTC