Dictionary of Nomenclature of Celestial Objects
(Last update: 02-Nov-2023)

Result of query: info cati 4U$

Details on Acronym:   4U
  
4U     (Uhuru satellite)
 Write:<<4U  HHMM+DD>>  

        <<4U  HHMM+DDd>>
 N:  339
Object:(X)  (SIMBAD class: X = X-ray Source)
  Stat:is completely incorporated in Simbad
  Note:All sky, Supersedes the 2U and 3U catalogs.
    The format HHMM+DDd is not in the original catalog.
   Ref:=1978ApJS...38..357F
     byFORMAN W.
, JONES C., COMINSKY L., JULIEN P., MURRAY S., PETERS G., TANANBAUM H., GIACCONI R.
 Astrophys. J., Suppl. Ser., 38, 357-412 (1978)

    The fourth UHURU catalog of X-ray sources.

oin ref list BENNETT 1963MmRAS..68..163B instead of MNRAS., CARPENTER    19 77MNRAS.179p..27C instead of MNRAS.179.27, LEWIN 1971ApJ...166L..    69L instead of ApJ.166.169
oTable 1: <4U HHMM+DD> N=339
=E=Catalogue in electronic form as VII/18