Request for Comments Page for UCD1+ list version 1.3

Current WD at http://www.ivoa.net/documents/UCD1+/20170502/index.html

New terms have been added after request from Planetary and solar science.

This working draft is going along the regular IVOA review process in order to stabilise the current additions to the vocabulary.

Please review it quickly to check any inconstistencies and comment on this page.

Comments and suggestions :

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