| NGC 4545 | |
|---|---|
 NGC 4545 imaged bySDSS | |
| Observation data (J2000epoch) | |
| Constellation | Draco |
| Right ascension | 12h 34m 34.1587s[1] |
| Declination | +63° 31′ 30.63″[1] |
| Redshift | 0.009130[1] |
| Heliocentric radial velocity | 2,737±2 km/s[1] |
| Distance | 137.1 ± 9.6 Mly (42.04 ± 2.95 Mpc)[1] |
| Group orcluster | NGC 4545 Group (LGG 295) |
| Apparent magnitude (V) | 12.3[1] |
| Characteristics | |
| Type | SB(s)cd?[1] |
| Size | ~99,700 ly (30.58 kpc) (estimated)[1] |
| Apparent size (V) | 2.5′ × 1.5′[1] |
| Other designations | |
| IRAS 12323+6348,UGC 7747,MCG +11-15-064,PGC 41838,CGCG 315-047[1] | |
NGC 4545 is abarred spiral galaxy in theconstellation ofDraco. Its velocity with respect to thecosmic microwave background is2,850±8 km/s, which corresponds to aHubble distance of 137.1 ± 9.6 Mly (42.04 ± 2.95 Mpc).[1] However, 19non-redshift measurements give a closer mean distance of 118.22 ± 5.34 Mly (36.247 ± 1.637 Mpc).[2] It was discovered by German-British astronomerWilliam Herschel on 20 March 1790.[3]
NGC 4545 is the brightest galaxy in a group of galaxies that bears its name. The NGC 4545 group (also known asLGG 295) has at least six members, includingNGC 4510,NGC 4512,NGC 4521, UGC 7848, and UGC 7941.[4]
Onesupernova has been observed in NGC 4545:SN 1940D (type unknown, mag. 15) was discovered by Josef J. Johnson on 25 July 1940.[5][6][7]
Media related toNGC 4545 at Wikimedia Commons
