[vsnet-chat 1419] Re: IAU nomenclature for USNO catalogues

[Seiichi Yoshida <seiichi@muraoka.info.waseda.ac.jp>]

Hello. I am Seiichi Yoshida working on the MISAO project.

In [vsnet-chat 1381], Brian shows us the rules of code for each star
in the USNO-A1.0 catalog. I have two questions on USNO stars and one on 
GSC stars.

|         ->      <USNO-A1.0 1425.09823278> N=1

First question is:

  Do we have to write it as it is above? The characters < and > at the 
  beginning and end, and a space after USNO-A1.0, are required?

Second question is:

|         >> USNO 1425.09823278.
|         ->      <USNO-A1.0 1425.09823278> N=1

Which does it means, 

(a) Although we were calling it "USNO 1425.09823278" until A2.0 was
    released, we must call it "USNO-A1.0 1425.09823278" after this.

(b) We can write "USNO 1425.09823278" or "USNO-A1.0 1425.09823278" to
    point out the same star (of course, the latter is recommended).

Another question is on GSC stars. Is there a rule to distinguish GSC
1.1 stars and GSC 1.2 stars? In my own case, I usually write a
5.40-mag star at R.A.=00 24 47.55  Decl.=+61 49 51.6 as GSC4015.3523
using GSC 1.1 CD-ROMs. How is it written if using GSC 1.2 data?

Thanks in advance,

--
Seiichi Yoshida
Muraoka Lab., Waseda University, Japan
seiichi@muraoka.info.waseda.ac.jp
http://vsnet.info.waseda.ac.jp/muraoka/members/seiichi/index.html

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