UGC 9425

UGC 9425 (also known as Segner's Wheel) are a pair of interacting galaxies^[1] located in the constellation of Boötes, comprising PGC 52283 and PGC 87675, both disk-type galaxies.^[2][3] It is located 468 million light-years from Earth^[4] and catalogued as Arp 241 by Halton Arp.^[5]

UGC 9425
SDSS image of UGC 9425
Observation data (J2000 epoch)
Constellation	Boötes
Right ascension	14h 37m 50.8s
Declination	+30° 28′ 52.4″
Redshift	0.034717 ± 0.000110
Heliocentric radial velocity	10,408 km/s
Distance	468 Mly (143.6 ± 10.1 Mpc)
Surface brightness	15
Characteristics
Type	S?
Apparent size (V)	1.1' x 0.6'
Other designations
PGC 52283/87675, Arp 241, MCG +05-34-083, VV 264

Supernova

One supernova was discovered by W.D. Li from the University of California via unfiltered images taken from the Kazman Automatic Imagining Telescope, in UGC 9425. Called SN 2001ck, the supernova was located 5".8 west and 3".0 north of the nucleus.^[6] Further investigations by astronomers from Harvard Smithsonian Center for Astrophysics, confirmed it as a type Ia supernova with an expansion velocity of 11,000 kilometers per seconds.^[7][8]