Dictionary of Nomenclature of Celestial Objects
(Last update: 13-Sep-2017)

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

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