Update of the IVOA UCD list incorporating items for planetary data

[Mcglynn, Thomas A. (GSFC-6601)]

Just a tiny editorial comment.  I was amused by the first statement in 
section 1.1 of the UCD draft, i.e.,
  "Abbreviations are kept to a minimum, and only if the result is not 
ambiguous."
In practice abbreviations are used extensively and no apparent attempt 
has been made to minimize their usage.  Not saying there should be, just 
that the quoted statement is contrary to the actual practice.  E.g., 11 
of the 12 top level atoms are abbreviations -- only 'time' is written in 
full.  The EM bands are mostly abbreviated and there a bazillion
uses of MHz and GHz, and "det" for detector and "freq" for frequency,  
"obsty" for observatory and "tel" for telescope, "bib" for 
bibliographic, ....

I am not suggesting that UCDs be expanded, but that the statement I 
mentioned above be elided.  We could just say
"Abbreviations are used in contexts where their meaning is unambiguous" 
and not make any claim that that use is limited.

     Tom

Louys Mireille wrote:
> Dear Semantics member,
> Dear UCD-maintenance group 's member,
>
> Here attached is a draft for the update of the UCD list in order to 
> enrich the corpus with items covering the Planetary data use-case.
>
> New UCD strings have been proposed  by B. Cecconi et al.  at the IVOA 
> Interop in Madrid and circulated via the wiki page
> http://wiki.ivoa.net/twiki/bin/view/IVOA/PlanetaryUCD
>
> see attached Note:  SolarSystemUCD-V06.pdf
>
> The following working draft is open for discussion .
>
> Your comments and feedback are welcome .
>
> best wishes , Mireille
>
>
>