NGC 3689 is a intermediate spiral galaxy in the constellation of Leo. Its velocity with respect to the cosmic microwave background is 3049 ± 22 km/s, which corresponds to a Hubble distance of 44.97 ± 3.16 Mpc (∼147 million light-years).[1] However, 16 non-redshift measurements give a distance of 39.350 ± 2.088 Mpc (∼128 million light-years).[1] The galaxy was discovered by German-British astronomer William Herschel on 6 April 1785.[2]
| NGC 3689 | |
|---|---|
 The intermediate spiral galaxy NGC 3689. | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 28m 11.0268s[1] |
| Declination | +25° 39′ 40.22″[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' x 1.1'[1] |
| Other designations | |
| PGC 35294, UGC 6467, CGCG 126-057, MCG +04-27-037, 2MASX J11281100+2539397[1] | |
According to the SIMBAD database, NGC 3689 is a radio galaxy.[3]
The SAGA Astronomical Survey for the search for satellite galaxies orbiting another galaxy confirmed the presence of two satellite galaxies for NGC 3689.[4]
One Calcium-rich supernova has been observed in NGC 3689: AT 2024mxe (type Gap, mag. 17.7).[5]
See also
editReferences
edit- ^ a b c d e f g h i j k l "NASA/IPAC Extragalactic Database". Results for NGC 3689. Retrieved 8 August 2024.
- ^ Seligman, Courtney. "Celestial Atlas Entry for NGC 3689". cseligman.com. Retrieved 8 August 2024.
- ^ "SIMBAD astronomical database". Entry for NGC 3689. Retrieved 8 August 2024.
- ^ Mao, Yao-Yuan; Geha, Marla; Wechsler, Risa H.; Weiner, Benjamin; Tollerud, Erik J.; Nadler, Ethan O.; Kallivayalil, Nitya (2021). "The SAGA Survey. II. Building a Statistical Sample of Satellite Systems around Milky Way–like Galaxies". The Astrophysical Journal. 907 (2): 85. arXiv:2008.12783. Bibcode:2021ApJ...907...85M. doi:10.3847/1538-4357/abce58.
- ^ "Transient Name Server". Entry for AT 2024mxe. Retrieved 8 August 2024.
External links
edit
Media related to NGC 3689 at Wikimedia Commons- NGC 3689 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
