NGC 5698
Galaxy in the constellation Boötes
From Wikipedia, the free encyclopedia
NGC 5698 is a barred spiral galaxy in the constellation of Boötes. Its velocity with respect to the cosmic microwave background is 3,782±11 km/s, which corresponds to a Hubble distance of 181.9 ± 12.8 Mly (55.78 ± 3.91 Mpc).[1] However, 7 non-redshift measurements give a closer mean distance of 154.23 ± 11.53 Mly (47.286 ± 3.535 Mpc).[2] It was discovered by German-British astronomer William Herschel on 16 May 1787.[3]
| NGC 5698 | |
|---|---|
NGC 5698 imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 37m 14.6972s[1] |
| Declination | +38° 27′ 15.553″[1] |
| Redshift | 0.012106±0.00000911[1] |
| Heliocentric radial velocity | 3,629±3 km/s[1] |
| Distance | 154.23 ± 11.53 Mly (47.286 ± 3.535 Mpc)[1] |
| Apparent magnitude (V) | 13.6g[1] |
| Characteristics | |
| Type | SBb[1] |
| Size | ~93,900 ly (28.80 kpc) (estimated)[1] |
| Apparent size (V) | 2.07′ × 0.78′[1] |
| Other designations | |
| IRAS 14352+3840, 2MASX J14371464+3827150, UGC 9419, MCG +07-30-038, PGC 52251, CGCG 220-037[1] | |
NGC 5698 is a radio galaxy, i.e. it has giant regions of radio emission extending well beyond its visible structure.[4][5] Additionally, NGC 5698 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[6][5]
Supernova
One supernova has been observed in NGC 5698:
- SN 2005bc (Type Ia, mag. 16.6) was discovered by the Lick Observatory Supernova Search (LOSS), and independently by Tim Puckett and L. Cox, on 2 April 2005.[7][8]
