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[vsnet-chat 1381] IAU nomenclature for USNO catalogues

     ...my first post was inadvertently garbled.  Here is the complete message.

     Already the IAU nomenclature  committee has anticipated that the
numbering of the faint USNO stars might be different for different editions.
Thus the object Kato-san mentions, USNO 1425.09823278, more properly given as
USNO-A1.0 1425.09823278.  See also the Lortet et al. "Dictionary...", whose
entry for USNO-A1.0 is:

From the <<Dictionary of Nomenclature of Celestial Objects>>
(Lortet, Borde, Ochsenbein, 1994, A&AS, 107, 193) (Last CDS update: 09-Oct-1998)
=========================================================================
PMM     (Precision Measuring Machine)
  ====> Equivalent to: USNO-A1.0
 Origin of the Acronym: L = Found in the literature
=========================================================================
USNO-A1.0 = PMM  (US Naval Obs., A1.0 catalogue)
 Write: <<USNO-A1.0 NNNN.NNNNNNNN>>  N=488006860
 Object [*]     (SIMBAD class: Star)
  Note: Stars found in th USNO A1.0 catalogue:
        In the format, the 4 first digits 'NNNN' from 0000 to 1725 are
        representing the distance in 0.1deg to the South Pole (step is 75),
        and the last 'NNNNNNNN' are a sequential number (8 digits) in the
        zone, ordered by RA.
        The USNO-A1.0 was compiled from the blue/red overlaps of the
        detection lists generated from scans of POSS-I O and E plates,
        and SRC-J and ESO-R plates.
        Two among first refs containing objects from this catalogue:
        1997IAUC.6731Q...1H, 1997IAUC.6749Q...1Q
   Ref: =1997IAUC.6731Q...1H
     by HU J.-Y., QIU Y.-I., LI W.-D., WEI J.-Y., ESAMDIN A.
        IAU Circ., 6731Q, 1 (1997)
        >> USNO 1425.09823278.
        ->      <USNO-A1.0 1425.09823278> N=1
   Ref: =1997IAUC.6749Q...1Q
     by QIAO Q.-Y., QIU Y.-I., HU J.-Y., ESAMDIN A., ZHANG Y., JHA S.,
           GARNAVICH P., CHALLIS P., KIRSHNER R., LUU J., GROGIN N.     IAU Circ
., 6749Q, 1 (1997)
        >> Supernova 1997dg in anonymous galaxy.
        ->      <USNO-A1.0 1125.20187894> N=1
  Link: http://psyche.usno.navy.mil/pmm/
  Link: http://vizier.u-strasbg.fr/cgi-bin/VizieR?-source=USNO-A1.0
 Origin of the Acronym: A = Assigned by the author(s)
=========================================================================

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