NGC 6261 | |
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Observation data | |
Constellation | Hercules |
Right ascension | 254.127 degrees |
Declination | 27.97 degrees |
Redshift | 0.035184 |
Heliocentric radial velocity | 10,601 km/s |
Distance | 471.4 Mly (144.53 Mpc) |
Apparent magnitude (V) | 14.5 |
Surface brightness | 28.5 mag/arcsec |
Characteristics | |
Type | S0/a |
Size | 200,000 ly |
Other designations | |
PGC 59286, UGC 10617, MCG +05-40-006, CGCG 169-013, 2MASX J16563054+2758392, SDSS J165630.51+275839.0, UZC J165630.6+275839, NSA 070084, NVSS J165630+275838, LEDA 59286 |
NGC 6261 is a lenticular galaxy in the constellation of Hercules. [1] [2] It is located 470 million light-years away from the Solar System and has an approximate diameter of 200,000 light-years. [3]
NGC 6261 was discovered on July 13, 1880, by French astronomer Edouard Stephan. The galaxy is described as LINER according to SIMBAD database [4] and presents emission spectrum in its nucleus which is categorized by broad lines of weak ionized atoms.
Two supernovae have been discovered in NGC 6261 so far: SN 2007hu and SN 2008dt.
SN 2007hu [5] was discovered on September 9, 2007, by astronomers Ernesto Guido, A. Sehgal and Tim Puckett. [6] It had a magnitude of 17.7 and was located 1".3 west and 1".4 north of the nucleus. The supernova was Type la. [5]
SN 2008dt [7] was discovered on 30 June, 2008, [8] by astronomers D. Madison, W. Li and A.V. Filippenko at the University of California, Berkeley. [9] It had a magnitude of 17.2 and was located 1".0 east and 5.5" south of the nucleus. [10] The supernova was Type la. [7]