NGC 5490
Radio galaxy in the constellation Boötes
From Wikipedia, the free encyclopedia
NGC 5490 is a large elliptical galaxy located in the constellation of Boötes. Its velocity relative to the cosmic microwave background is 5,075 ± 22 km/s, which corresponds to a Hubble distance of 244.1 ± 17.1 Mly (74.85 ± 5.25 Mpc).[3] In addition, 13 non-redshift measurements gives a distance of 269.98 ± 15.01 Mly (82.777 ± 4.603 Mpc).[5] NGC 5490 was discovered by the German-British astronomer William Herschel on 14 March 1784.[6]
| NGC 5490 | |
|---|---|
SDSS image of NGC 5490 | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 09m 57.330s[1] |
| Declination | +17° 32′ 43.53″[1] |
| Redshift | 0.016693[2] |
| Heliocentric radial velocity | 4838 ± 14 km/s[3] |
| Distance | 225.63 ± 0.29 Mly (69.18 ± 0.09 Mpc)[4] |
| Group or cluster | NGC 5490 Group (LGG 376) |
| Apparent magnitude (V) | 12.9[3] |
| Characteristics | |
| Type | E[3] |
| Size | ~188,400 ly (57.75 kpc) (estimated)[3] |
| Apparent size (V) | 1.443′ × 1.126′[1] |
| Notable features | See also Gra 1408+17 |
| Other designations | |
| 2MASX J14095733+1732435, 4C 17.57, CGCG 103.095, GC 3798, H III-32, h 1752, LEDA 50558, LGG 376-001, MITG J1409+1732, MCG+03-36-065, MRC 1407+177, OHIO Q 112, PGC 50558, PKS 1407+17, UGC 9058, UT 1407+178, UZC J140957.3+173244, VRO 17.14.01, Z 103-95, Z 1407.6+1747 | |
Supernovae
Two supernovae have been observed in NGC 5490:
Supermassive Black Hole
According to a study published in 2009 and based on the internal velocity of the galaxy measured by the Hubble Space Telescope, the mass of the supermassive black hole at the center of NGC 5490 is between 260 million and 1.9 billion M☉.[10]
GRA B1408+17
According to the SIMBAD database, NGC 5490 is a radio galaxy.[11] GRA B1408+17 is a radio-source in NGC 5490 located at the coordinates RA 14h 10m 24s, DEC +17° 32′ 00″.[12]
