| NGC 3689 | |
|---|---|
 The intermediate spiral galaxy NGC 3689 | |
| Observation data (J2000epoch) | |
| Constellation | Leo |
| Right ascension | 11h 28m 11.0446s[1] |
| Declination | +25° 39′ 39.943″[1] |
| Redshift | 0.009130[1] |
| Heliocentric radial velocity | 2737 ± 1 km/s[1] |
| Distance | 146.7 ± 10.3 Mly (44.97 ± 3.16 Mpc)[1] |
| Apparent magnitude (V) | 12.3[1] |
| Characteristics | |
| Type | SAB(rs)c[1] |
| Size | ~69,100 ly (21.20 kpc) (estimated)[1] |
| Apparent size (V) | 1.7′ × 1.1′[1] |
| Other designations | |
| 2MASX J11281100+2539397,UGC 6467,MCG +04-27-037,PGC 35294,CGCG 126-057[1] | |
NGC 3689 is anintermediate spiral galaxy in theconstellation ofLeo. Its velocity with respect to thecosmic microwave background is 3049 ± 22 km/s, which corresponds to aHubble distance of 44.97 ± 3.16Mpc (~147 millionlight-years).[1] However, 16non-redshift measurements give a closer distance of 39.350 ± 2.088 Mpc (~128 million light-years).[1] The galaxy was discovered by German-British astronomerWilliam Herschel on 6 April 1785.[2]
TheSIMBAD database lists NGC 3689 as aradio galaxy.[3][4]
The SAGA Astronomical Survey for the search for satellite galaxies orbiting another galaxy confirmed the presence of two satellite galaxies for NGC 3689.[5]
Onecalcium-rich supernova has been observed in NGC 3689: AT 2024mxe (type Gap, mag. 17.7) was discovered byGOTO on 26 June 2024.[6]
Media related toNGC 3689 at Wikimedia Commons
