NGC 5722
Galaxy in the constellation Boötes
From Wikipedia, the free encyclopedia
NGC 5722 is a large lenticular galaxy in the constellation of Boötes. Its velocity with respect to the cosmic microwave background is 10,875±9 km/s, which corresponds to a Hubble distance of 523.2 ± 36.6 Mly (160.40 ± 11.23 Mpc).[1] Additionally, one non-redshift measurement gives a slightly farther distance of 531.63 Mly (163.000 Mpc).[2] It was discovered by British astronomer John Herschel on 26 April 1830.[3]
| NGC 5722 | |
|---|---|
NGC 5722 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 38m 54.4118s[1] |
| Declination | +46° 39′ 56.299″[1] |
| Redshift | 0.035862±0.00000884[1] |
| Heliocentric radial velocity | 10,751±3 km/s[1] |
| Distance | 523.2 ± 36.6 Mly (160.40 ± 11.23 Mpc)[1] |
| Apparent magnitude (V) | 15.0g[1] |
| Characteristics | |
| Size | ~191,700 ly (58.79 kpc) (estimated)[1] |
| Apparent size (V) | 0.76′ × 0.64′[1] |
| Other designations | |
| 2MASX J14385438+4639562, MCG +08-27-014, PGC 52355, CGCG 248-016 NED01[1] | |
NGC 5722 is a Seyfert II galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[4][5]
Compact galaxy group
NGC 5722 is a member of a compact galaxy group catalogued as MLCG 1495. The other galaxies in the group are NGC 5721, NGC 5723, and SDSS J143853.22+464152.1.[6][7]
