Registry · deep sky

3C 278

QSO SIMBAD QSO 125 papers

harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.

Right ascension: 12h 54m 36.96s
Declination: −12° 33′ 31.8″
Galactic l, b: 304.15, 50.31
Magnitude V: 11.6
Redshift z: 0.016
Radial velocity: 4,758.3 km/s

Also known as

25 identifiers

1Jy 1251-121Jy 1251-1223C 278AT20G J125438-123255CTA 55Cul 1251-122EQ 1252-12GLEAM J125437-123333GRA B1251-11MRC 1252-122MSH 12-1-18NRAO 412NVSS J125438-123320OHIO N -187PKS 1251-122PKS 1252-12PKS J1254-1233PMN J1254-1233TGSSADR J125436.9-123331VLSS J1254.6-1233WISH B1251.9-1217WISH B1251.9-1217B[JAP2011] J193.62-12.48[VV2006] J125436.1-123348[VV2010] J125436.1-123348

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
NGC 4783	GinPair	6.403″	12.8
NGC 4782	RadioG	39.63″	12.75
SN 1956B	Supernova	86.44″	18.6
2MASX J12542524-1233589	GtowardsGroup	173.3″	16.5
2MASX J12544041-1236179	GtowardsGroup	174.1″	16.7
2MASX J12544382-1235589	GtowardsGroup	178.7″	16.9
2MASX J12544559-1229288	Galaxy	273.9″	—
2MASX J12545384-1230173	GtowardsGroup	314.5″	16.4
LEDA 140020	Seyfert2	326.4″	16.4
NGC 4792	EmissionG	450.1″	15
ATO J193.5160-12.5742	RRLyrae	488″	16.54

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/3c-278 · Registry entry updated 2026-08-14.