NGC 7623
Lenticular galaxy in Pegasus
From Wikipedia, the free encyclopedia
NGC 7623 is a lenticular galaxy located in the constellation Pegasus. It was discovered on September 26, 1785, by the German-British astronomer William Herschel.[1]
| NGC 7623 | |
|---|---|
NGC 7623 as observed by the Sloan Digital Sky Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Pegasus |
| Right ascension | 23h 20m 38.7s |
| Declination | +08° 13′ 54″ |
| Redshift | 0.011313 |
| Distance | ~160 million |
| Characteristics | |
| Type | S0 |
| Apparent size (V) | 2.2′ × 1.6′ |
| Other designations | |
| UGC 12498, PGC 71017 | |
The galaxy is situated at a distance of approximately 160 million light-years from the Milky Way, based on its redshift. NGC 7623 is classified as a lenticular (S0) galaxy, exhibiting structural characteristics intermediate between elliptical and spiral galaxies.
NGC 7623 is part of the Pegasus I Group, a nearby galaxy group composed primarily of early-type galaxies. It forms a close pair with the neighboring elliptical galaxy NGC 7626, and the two galaxies are frequently studied together in investigations of galaxy interactions and group dynamics.[2]
Multiwavelength observations, including optical and X-ray studies, suggest the presence of diffuse hot gas associated with the surrounding group environment, consistent with lenticular galaxies located in dense regions.[3]
NGC 7623 is catalogued in several major astronomical databases, including the New General Catalogue, the Uppsala General Catalogue (UGC 12498), and the Principal Galaxies Catalogue (PGC 71017).[4]