Space data and information transfer systems — Conjunction data message

ISO 19389:2014 specifies a standard message format for use in exchanging spacecraft conjunction information between originators of Conjunction Assessments (CAs) and satellite owner/operators and other authorized parties. Such exchanges are used to inform satellite owner/operators of conjunctions between objects in space to enable consistent warning by different organizations employing diverse CA techniques.

ISO 19389:2014 will:

facilitate interoperability and enable consistent warning between data originators who supply CA and the satellite owner/operators who use it;
facilitate automation for the CA processes; and
provide critical information to enable timely CA decisions.

This document includes requirements and criteria that the message format has been designed to meet (see Annex D). Also included are informative descriptions of conjunction information pertinent to performing CA (see Annex E).

ISO 19389:2014 is applicable to satellite operations in all environments in which close approaches and collisions among satellites are concerns. It contains the specification for a Conjunction Data Message (CDM) designed for applications involving conjunction information interchange