Dictionary of Nomenclature of Celestial Objects
(Last update: 11-Aug-2017)

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)