Dictionary of Nomenclature of Celestial Objects
(Last update: 15-Sep-2023)

Result of query: info cati PPMX$

Details on Acronym:   PPMX
  
PPMX   (PPM-Extended)
 Write:<<PPMX  JHHMMSS.s+DDMMSS>>
 N:  18088919
Object:*  (SIMBAD class: Star)
  Note:ICRS positions and proper motions based on GSC 1.2 and 2MASS point    source catalogues.
   Ref:=2008A&A...488..401R
     byROESER S.
, SCHILBACH E., SCHWAN H., KHARCHENKO N.V., PISKUNOV A.E., SCHOLZ R.-D.
 Astron. Astrophys., 488, 401-408 (2008)

    PPM-Extended (PPMX) - a catalogue of positions and proper motions.

oCatalog: <PPMX JHHMMSS.s+DDMMSS> N=18088919.
=E=Catalogue in electronic form as I/312
 Originof the Acronym: A = Assigned by the author(s)