Faint dwarf galaxy in the constellation Ursa Major
UGC 9405
Dwarf galaxy UGC 9405 taken by the Hubble Space Telescope.
Observation data (J2000 epoch)
Constellation
Ursa Major
Right ascension
14h 35m 24.077s[1]
Declination
+57° 15′ 21.24″[1]
Redshift
0.000741[2]
Heliocentric radial velocity
222 ± 7 km/s[2]
Distance
20.5 ± 1.2 Mly (6.30 ± 0.38 Mpc)[3]
Apparent magnitude (V)
14.08[4]
Apparent magnitude (B)
15.39[4]
Characteristics
Type
I[4]
Other designations
MCG +10-21-013, PGC 52142[2]
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UGC 9405 (also known as PGC 52142) is a faint dwarf irregular galaxy situated in the constellation of Ursa Major. It is about 20.5 million light-years, or 6.3 megaparsecs, away from the Earth.[3] It is listed as a member of the M101 Group, a group containing the several galaxies orbiting the largest, Pinwheel Galaxy (M101).[5] However, due to its far distance from the Pinwheel Galaxy, its membership of the group is uncertain.[3]
^ abAdelman-McCarthy, J. K.; et al. (2009). "VizieR Online Data Catalog: The SDSS Photometric Catalog, Release 7". VizieR On-line Data Catalog. Bibcode:2009yCat.2294....0A.
^ abc"UGC 9405". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-03-19.
^ abcCarlsten, Scott G.; Beaton, Rachael L.; Greco, Johnny P.; Greene, Jenny E. (2019). "Using Surface Brightness Fluctuations to Study nearby Satellite Galaxy Systems: The Complete Satellite System of M101". The Astrophysical Journal. 878 (1): L16. arXiv:1901.07578. Bibcode:2019ApJ...878L..16C. doi:10.3847/2041-8213/ab24d2. S2CID 119089770.
^ abc"Search specification: UGC 9405". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 2021-03-19.
^"The M101 group of galaxies". www.messier.seds.org. Retrieved 2020-04-26.
UGC9405 (also known as PGC 52142) is a faint dwarf irregular galaxy situated in the constellation of Ursa Major. It is about 20.5 million light-years...
prominent companion galaxies: NGC 5204, NGC 5474, NGC 5477, NGC 5585, UGC 8837 and UGC9405. As stated above, the gravitational interaction between it and its...
lists from the above references) include the irregular galaxies NGC 5238 and UGC 8508. The M51 Group, which includes the Whirlpool Galaxy (M51) and the Sunflower...