| NGC 820 | |
|---|---|
 SDSS image of NGC 820 | |
| Observation data (J2000epoch) | |
| Constellation | Aries |
| Right ascension | 02h 08m 24.97482s[1] |
| Declination | +14° 20′ 58.5388″[1] |
| Redshift | 0.01477[2] |
| Heliocentric radial velocity | 4395 km/s[2] |
| Distance | 213.5 Mly (65.46 Mpc)[3] |
| Group orcluster | NGC 820 Group (LGG 48) |
| Apparent magnitude (B) | 13.7[2] |
| Characteristics | |
| Type | Sb[2] |
| Size | ~82,900 ly (25.42 kpc) (estimated)[4] |
| Other designations | |
| IRAS 02057+1406,UGC 1629,MCG +02-06-036,PGC 8165,CGCG 438-031[2] | |
NGC 820 is aspiral galaxy located in theconstellation Aries about 210 millionlight-years from theMilky Way.[3] It was discovered by British astronomerJohn Herschel on 7 September 1828.[5][6][4][7]
NGC 820 is the largest and brightest of a trio of galaxies. The other two galaxies in the NGC 820 group (also known asLGG 48) are UGC 1630 and UGC 1689.[8]
Onesupernova has been observed in NGC 820: SN 2002ea (type IIn, mag. 17.7) was discovered on 21 July 2002 byTim Puckett andJack Newton.[9][10]
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