| NGC 515 | |
|---|---|
 | |
| Observation data (J2000[1]epoch) | |
| Constellation | Pisces[2] |
| Right ascension | 01h 24m 38.6s[3] |
| Declination | +33° 28′ 22″[3] |
| Redshift | 0.01700 ± 0.00007[1] |
| Heliocentric radial velocity | (5053 ± 21) km/s[1] |
| Distance | 228Mly[4] |
| Apparent magnitude (V) | 13.1[2] |
| Apparent magnitude (B) | 14.1[2] |
| Characteristics | |
| Type | S0[2] |
| Apparent size (V) | 1.4' × 1.1'[2] |
| Other designations | |
| PGC 5201,UGC 956,GC 299,MGC +05-04-052,2MASS J01243853+3328214,h 113[1][5] | |
NGC 515, also occasionally referred to asPGC 5201 orUGC 956, is alenticular galaxy located approximately 228 million light-years from theSolar System[4] in the constellationPisces.[2] It was discovered on 13 September 1784 byastronomerWilliam Herschel.[5]
Herschel discovered the object along withNGC 517 usingBeta Andromedae as a reference star. He described his discovery as "two, both stellar", indicating his misidentification of the object as a star. The position noted for NGC 515 is just 35 seconds east of UGC 956, thus the two entries are generally thought to be the same object.[6] The object was also observed byJohn Herschel, son of William Herschel and later catalogued byJohn Louis Emil Dreyer in the New General Catalogue, where the galaxy was described as "pretty faint, very small, round, northwestern of 2" with the other one being NGC 517.[5]
The galaxy has anapparent visual magnitude of 13.1 and can be classified as type S0 using theHubble Sequence.[2] The object's distance of roughly 230 million light-years from the Solar System can be estimated using itsredshift andHubble's law.[4]
