Details on Acronym: NVSS
NVSS (NRAO VLA Sky Survey) Write:<<NVSS JHHMMSS+DDMMSSa>>
<<NVSS BHHMMSS+DDMMSS>> N: 1773484 Object:(Rad) (SIMBAD class: Radio = Radio Source) Note:The NVSS source list is too large (about 2x106 lines) to print on paper. It will appear only on the WWW or digital copies of the http://www.nrao.edu website.
The NVSS source at J2000 00 00 00.24 -20 04 49.2 = B1950 23 57 26.34 -20 21 31.5 is called NVSS J000000-200449 or NVSS B235726-202131.
There are four cases where there are pairs of sources which are so close together that their names would be identical according to this schema, and the HEASARC has added suffixes of 'a' (for the source with the smaller RA) and 'b' (for the source with the larger RA) in such cases in order to differentiate them. Ref:=1998AJ....115.1693C byCONDON J.J. , COTTON W.D., GREISEN E.W., YIN Q.F., PERLEY R.A., TAYLOR G.B., BRODERICK J.J. Astron. J., 115, 1693-1716 (1998) The NRAO VLA Sky Survey. o<NVSS JHHMMSS+DDMMSSa> = <NVSS BHHMMSS+DDMMSS> N=1773484. National Radio Astronomy Observatory =E=Catalogue in electronic form as VIII/65 Originof the Acronym: p = Pre-registered to IAU Comm.5