Dictionary of Nomenclature of Celestial Objects
(Last update: 26-Sep-2023)

Result of query: info cati 2CXO J125435.1-123513$

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Details on Acronym:   2CXO
  
2CXO   (Second release of the Chandra Source Catalog)
 Write:<<2CXO  JHHMMSS.s+DDMMSS{|X}>>
 N:  about 150000
Object:(X)  (SIMBAD class: X = X-ray Source)
  Note:The second release of the Chandra Source Catalog (CSC) is currently under    development and is expected early 2014, but we would like to pre-register    the acronym. Its nature is identical to the CXO acronym which we reserved    exclusively for the first release of the CSC, with one exception: while    the first release contained only compact (i.e., unresolved) sources, in    this release we will include extended sources as well; if there would a be    naming conflict between a compact and an extended source, we will append    the letter 'X' to the source name to identify the extended source.    Consequently, a source whose name ends in 'X' will be guaranteed to be    extended; all other sources may be compact or extended. The rationale for    not explicitly identifying compact sources is the large variation in PSF    size over Chandra's field of view which makes a specific compact designation    meaningless.
 Auth.:Arnold Rots

Smithsonian Astrophysical Observatory
=E=Catalogue in electronic form as <IX/57/>
 Originof the Acronym: p = Pre-registered to IAU Comm.5