| NGC 2804 | |
|---|---|
 The lenticular galaxy NGC 2804 | |
| Observation data (J2000epoch) | |
| Constellation | Cancer |
| Right ascension | 09h 16m 50.0173s[1] |
| Declination | +20° 11′ 54.631″[1] |
| Redshift | 0.027662[1] |
| Heliocentric radial velocity | 8293 ± 3 km/s[1] |
| Distance | 412.8 ± 28.9 Mly (126.55 ± 8.86 Mpc)[1] |
| Apparent magnitude (V) | 12.8[1] |
| Characteristics | |
| Type | S0[1] |
| Size | ~226,100 ly (69.31 kpc) (estimated)[1] |
| Apparent size (V) | 1.4′ × 1.2′[1] |
| Other designations | |
| 2MASX J09165000+2011548,IC 2455,UGC 4901,MCG +03-24-028,PGC 26196,CGCG 091-047[1] | |
NGC 2804 is alenticular galaxy in theconstellation ofCancer. Its velocity with respect to thecosmic microwave background is 8580 ± 20 km/s, which corresponds to aHubble distance of 126.55 ± 8.86Mpc (~413 millionlight-years).[1] It was discovered by British astronomerJohn Herschel on 24 February 1827.[2] This galaxy was also observed by the French astronomerStéphane Javelle on 9 April 1896, and was later added to theIndex Catalogue as IC 2455.[2]
According to theSIMBAD database, NGC 2804 is aLINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[3]
Onesupernova has been observed in NGC 2804: SN 2023ftr (type Ia, mag. 18.51) was discovered by theZwicky Transient Facility on 16 April 2023.[4]
Media related toNGC 2804 at Wikimedia Commons.jpg) | Thislenticular galaxy article is astub. You can help Wikipedia byexpanding it. |
