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).[1] However, 16 non-redshift measurements give a closer 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]
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) was discovered by GOTO on 26 June 2024.[5]
See also
References
- ^ a b c d e f g h i j k l "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
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