| NGC 5248 | |
|---|---|
 NGC 5248 imaged with a 32-inch telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 13h 37m 32.0235s[1] |
| Declination | +08° 53′ 06.907″[1] |
| Redshift | 1151 ± 1 km/s[1] |
| Distance | 69.1 ± 4.9 Mly (21.19 ± 1.51 Mpc)[1] |
| Apparent magnitude (V) | 10.97[1] |
| Characteristics | |
| Type | SAB(rs)bc[1] |
| Size | ~84,600 ly (25.93 kpc) (estimated)[1] |
| Apparent size (V) | 6.2′ × 4.5′[1] |
| Other designations | |
| Caldwell 45, IRAS 13350+0908, UGC 8616, MCG +02-35-015, PGC 48130, CGCG 073-054[1] | |
NGC 5248 (also known as Caldwell 45) is a compact intermediate spiral galaxy in the constellation Boötes. Its velocity with respect to the cosmic microwave background is 1437 ± 20 km/s, which corresponds to a Hubble distance of 69.1 ± 4.9 Mly (21.19 ± 1.51 Mpc).[1] However, 17 non redshift measurements give a much closer distance of 42.52 ± 3.16 Mly (13.038 ± 0.969 Mpc).[2] It was discovered on 15 April 1784 by German-British astronomer William Herschel.[3]
NGC 5248 is a member of the NGC 5248 Group of galaxies, itself one of the Virgo III Groups strung out to the east of the Virgo Supercluster of galaxies.[4]
- ^ a b c d e f g h i j "NASA/IPAC Extragalactic Database". Results for NGC 5248. Retrieved 2010-11-27.
- ^ "Distance Results for NGC 5248". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 12 November 2024.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 5248". Celestial Atlas. Retrieved 12 November 2024.
- ^ "The Virgo III Groups". Atlas of the Universe. Retrieved 2010-11-27.