Encounters


As a service to the satellite operator community, the Center for Space Standards & Innovation (CSSI) offers SOCRATES-Satellite Orbital Conjunction Reports Assessing Threatening Encounters in Space. This service provides regular information on pending conjunctions on orbit over the coming week.

Twice each day, CSSI runs a list of all satellite payloads on orbit against a list of all objects on orbit using the catalog of all unclassified NORAD two-line element sets (TLEs) releasable to the public to look for satellite conjunctions over the next seven days. Here you can find a list with amateur-radio related satellites.

CelesTrak SOCRATES, predicts the following Orbital Conjunction Threats

Data current as of 2017 Mar 25 16:05 UTC

Date        Time       SAT 1                    SAT 2                   Minimum Range         Probability     
--------------------------------------------------------------------------------------------------------------
2017 Apr 01 00:31 UTC  PERSEUS-M2             - SL-14 R/B               59 m +/- 41 m         1.007E-03
2017 Apr 01 03:01 UTC  ORBCOMM FM19           - ORBCOMM FM21            132 m +/- 35 m        1.343E-03
2017 Apr 01 05:09 UTC  FLOCK 3P-39            - COSMOS 2251 DEB         16 m +/- 5 m          1.311E-02
2017 Mar 25 23:43 UTC  IRIDIUM 45             - COSMOS 2251 DEB         180 m +/- 62 m        7.961E-04
2017 Mar 26 13:39 UTC  AURA                   - PSLV R/B                106 m +/- 25 m        3.880E-04
2017 Mar 27 04:03 UTC  FLOCK 3P-73            - FLOCK 3P-32             77 m +/- 18 m         7.343E-04
2017 Mar 27 06:03 UTC  IRIDIUM 83             - SAPPHIRE                86 m +/- 28 m         3.661E-03
2017 Mar 27 19:39 UTC  SHIYAN 7 (SY-7)        - SHIYAN 7 DEB            67 m +/- 16 m         9.791E-04
2017 Mar 28 19:09 UTC  FLOCK 3P-48            - FLOCK 3P-47             20 m +/- 5 m          1.111E-02
2017 Mar 29 05:36 UTC  SCATSAT 1              - COSMOS 2251 DEB         76 m +/- 50 m         2.714E-04
2017 Mar 30 06:52 UTC  HST                    - ATHENOXAT 1             271 m +/- 68 m        3.433E-03
2017 Mar 31 07:03 UTC  COSMOS 1898            - IRIDIUM 60              119 m +/- 70 m        1.503E-03
2017 Mar 31 16:56 UTC  DLR-TUBSAT             - DELTA 1 DEB             59 m +/- 20 m         3.271E-04


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