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

Result of query: info cati 2S$

Details on Acronym:   2S
  
2S     (SAS-3 satellite, list 2)
 Write:<<2S  HHMM+DD>>  

        <<2S  HHMM+DDd>>
Object:(X)  (SIMBAD class: X = X-ray Source)
   Ref:=1977Natur.269...21B
     byBRADT H.V.
, APPARAO K.M.V., CLARK G.W., DOWER R., DOXSEY R., HEARN D.R., JERNIGAN J., JOSS P.C., MAYER W., McCLINTOCK J., WALTER F.
 Nature, 269, 21-25 (1977)

    On the optical identifications of five X-ray sources.