| NGC 3689 | |
|---|---|
 The intermediate spiral galaxy NGC 3689 | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11 28 11.0446 |
| Declination | +25° 39′ 39.943″ |
| Redshift | 0.009130 |
| Heliocentric radial velocity | 2737 ± 1 km/s |
| Distance | 146.7 ± 10.3 Mly (44.97 ± 3.16 Mpc) |
| Apparent magnitude (V) | 12.3 |
| Characteristics | |
| Type | SAB(rs)c |
| Size | ~69,100 ly (21.20 kpc) (estimated) |
| Apparent size (V) | 1.7′ × 1.1′ |
| Other designations | |
| 2MASX J11281100+2539397, UGC 6467, MCG +04-27-037, PGC 35294, CGCG 126-057 | |
NGC 3689 is an 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). However, 16 non-redshift measurements give a closer distance of 39.350 ± 2.088 Mpc (∼128 million light-years). The galaxy was discovered by German-British astronomer William Herschel on 6 April 1785.
According to the SIMBAD database, NGC 3689 is a radio galaxy.
The SAGA Astronomical Survey for the search for satellite galaxies orbiting another galaxy confirmed the presence of two satellite galaxies for NGC 3689.
One calcium-rich supernova has been observed in NGC 3689: AT 2024mxe (type Gap, mag. 17.7) was discovered by GOTO on 26 June 2024.
See also
References
- ^ "Results for object NGC 3689". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 8 August 2024.
- Seligman, Courtney. "Celestial Atlas Entry for NGC 3689". cseligman.com. Retrieved 8 August 2024.
- "NGC 3689". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 December 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
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
| Astronomical catalogs | |
|---|---|
| NGC | |
| Constellation of Leo | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stars |
| ||||||||||||
| |||||||||||||
| Galaxies |
| ||||||||||||
 Category | |||||||||||||