Projects

Overview
Project Title	Conjunction Data Message 5 Year Review Revision
Approval	Approved
Document Number	508.0
Charter	2.02 Navigation Working Group
Document Type	Blue
Description of Document	The Conjunction Data Message (CDM) specifies a standard message format for use in exchanging spacecraft conjunction information between originators of conjunction assessments and satellite owner/operators and other authorized parties. Such exchanges provide critical information to satellite owner/operators to enable timely collision avoidance decisions. The CDM is applicable to satellite operations in all environments in which close approaches and collisions among satellites are concerns.
Applicable Patents	There are no patent issues for this technology that are known by the CCSDS community
Patent Comments
Survey of Similar Standards Documents or Projects Undertaken in Other Bodies and elsewhere in CCSDS	None that we know of. This is a revision of an existing, widely used international standard.
Resources
Book Editor	UKSA
Book Editor Resources	UKSA Lead Editor with assistance from member of the ISO TC20/SC14 and Center for Space Standards and Innovation.
Prototype 1	NASA
Prototype 1 Resources	NASA/CARA is a current consumer/producer of version 1 CDMs.
Prototype 2	ESA
Prototype 2 Resources	ESOC/Space Debris Office is currently a consumer of version 1 CDMs.
Prototype 3
Prototype 3 Resources
Contribute	CNES, DLR, ESA, JAXA, NASA, UKSA
Monitor Only
Resource Comments	This project will extend the Conjunction Data Message to incorporate suggestions that have emerged from the large current user base.

Schedule

Legend for Schedule Milestones = Required for Orange Books = Required for Green Books = Required for Magenta Books = Required for Blue Books Note - Red Books are Draft Blue/Magenta Books Schedule Milestones	Original Completion Date (Date in M/D/YYYY format.)	Comments (Date in M/D/YYYY format.)
Project Approved	12/14/2018	Approved @CMC 10/23-24/2018 and CMC-P-2018-10-002
Project Start Date	1/7/2019	Received Master Copy from Secretariat
Internal WG Review
First Draft Circulated to WG	9/30/2019	P1.0.1 distributed
First Draft Comments Due	10/31/2019	P1.0.1 review complete
Second draft circulated to WG	9/30/2020	P-1.0.6 distributed
Second Draft Comments Due	10/31/2020
Final WB Submitted to AD for Further Processing	11/15/2020	P-1.0.7 submitted
External Milestones
Secretariat Document Processing	1/15/2021
First Agency Review	3/15/2021
RID Resolution	4/30/2021	During Fall 2024 Meetings
Secretariat Document Processing 2	5/30/2021	N/A No 2nd Agency Review
Final Agency Review		N/A No 2nd Agency Review
RID Resolution		N/A No 2nd Agency Review
First Prototype Development	7/30/2021
Second Prototype Development	8/30/2021
CMC Approval	10/15/2021
Total Time to Complete (in months)	33