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 2018 Jun 04 00:06 UTC Date Time SAT 1 SAT 2 Minimum Range Probability -------------------------------------------------------------------------------------------------------------- 2018 Jun 07 11:46 UTC AEROCUBE 7B - AEROCUBE 7C 79 m +/- 19 m 6.959E-04 2018 Jun 07 13:30 UTC PROBA-2 - DELTA 1 DEB 91 m +/- 30 m 3.845E-04 2018 Jun 08 07:24 UTC MIRATA - COSMOS 2251 DEB 58 m +/- 19 m 9.228E-04 2018 Jun 10 12:25 UTC IRIDIUM 52 - FENGYUN 1C DEB 74 m +/- 41 m 2.965E-03