Dictionary of Nomenclature of Celestial Objects
(Last update: 17-Mar-2023)

Result of query: info cati S4$

Details on Acronym:   S4
  
S4     (Strong Source, list 4)
 Write:<<S4  HHMM+DDA>>  

        <<S4  HHMM+DDd>>
 N:  484
Object:(Rad)  (SIMBAD class: Radio = Radio Source)
   Ref:=1978AJ.....83..451P
     byPAULINY-TOTH I.I.K.
, WITZEL A., PREUSS E., KUHR H., KELLERMANN K.I., FOMALONT E.B., DAVIS M.M.
 Astron. J., 83, 451-474 (1978)

    The 5-GHz strong source surveys. IV. Survey of the area between declination
    35 and 70° and summary of source counts,  spectra and optical    identifications.
o<S4 HHMM+DDd> or <S4 HHMM+DDA> N=484
 Originof the Acronym: A = Assigned by the author(s)