Dictionary of Nomenclature of Celestial Objects
(Last update: 26-Sep-2023)

Result of query: info cati 4C$

Details on Acronym:   4C1
  
4C1    (4th Cambridge catalog)
  ***** Avoid the usage of 4C1,  prefer 4C

Details on Acronym:   4C2
  
4C2    (4th Cambridge catalog)
  ***** Avoid the usage of 4C2,  prefer 4C

Details on Acronym:   4C
  
4C     (4th Cambridge catalog)= (4C1) = (4C2) 
 Write:<<4C  +DD.NN>>  

        <<4C  +DD.NN.N>>

<<4C  +DD.NNA>>	(not recognised by Simbad, but found in literature)
 N:  4844
Object:(Rad)  (SIMBAD class: Radio = Radio Source)
  Note:See also 4CT.
   Ref:=1965MmRAS..69..183P
     byPILKINGTON J.D.H.
, SCOTT P.F.
 Mem. R. Astron. Soc., 69, 183-224 (1965)

    A survey of radio sources between declinations 20 and 40.

o4C +25.56.1 is a 4C source in the declination range +25° lying between 4C    +25.56 and 4C +25.57 in right ascension.
o<4C +DD.NN> N=1218, <4C +DD.NN.N> N=1.
   Ref:=1967MmRAS..71...49G
     byGOWER J.F.R.
, SCOTT P.F., WILLS D.
 Mem. R. Astron. Soc., 71, 49-144 (1967)

    A survey of radio sources in the declination ranges -07 to 20 and 40
    to 80.
o<4C +DD.NN> N=3624.
=E=Catalogue in electronic form as VIII/4
 Originof the Acronym: A = Assigned by the author(s)