| NGC 688 | |
|---|---|
 Pan-STARRS image of NGC 688 | |
| Observation data (J2000epoch) | |
| Constellation | Triangulum |
| Right ascension | 01h 50m 44.2s[1] |
| Declination | 35° 17′ 04″[1] |
| Redshift | 0.013846[1] |
| Heliocentric radial velocity | 4151 km/s[1] |
| Distance | 193 Mly (59.2 Mpc)[1] |
| Group orcluster | Abell 262 |
| Apparent magnitude (V) | 13.35[1] |
| Characteristics | |
| Type | SBb[2] (R')SAB(rs)b[1] |
| Size | ~150,000 ly (45 kpc) (estimated)[1] |
| Apparent size (V) | 2.5 x 1.5[1] |
| Other designations | |
| CGCG 522-20, IRAS 01478+3502, KUG 0147+350, MCG 6-5-15, Mrk 1009, PGC 6799, UGC 1302[1] | |
NGC 688 is abarred spiral galaxy[3][4] withstarburst activity[5][6] located 190 millionlight-years away[6] in theconstellationTriangulum. It was discovered by astronomerHeinrich d'Arrest on September 16, 1865[5] and is a member of thegalaxy clusterAbell 262.[7][8][9]
