NGC 7808
Galaxy in the constellation Cetus
From Wikipedia, the free encyclopedia
NGC 7808 is a lenticular galaxy in the constellation of Cetus. Its velocity with respect to the cosmic microwave background is 8521 ± 24 km/s, which corresponds to a Hubble distance of 125.67 ± 8.80 Mpc (~410 million light-years).[1] It was discovered by American astronomer Frank Muller in 1886.[2]
| NGC 7808 | |
|---|---|
NGC 7808 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 00h 03m 32.1264s[1] |
| Declination | −10° 44′ 40.833″[1] |
| Redshift | 0.029570 [1] |
| Heliocentric radial velocity | 8865 ± 2 km/s[1] |
| Distance | 409.9 ± 28.7 Mly (125.67 ± 8.80 Mpc)[1] |
| Apparent magnitude (V) | 12.8[1] |
| Characteristics | |
| Type | (R')SA0^0?[1] |
| Size | ~158,900 ly (48.71 kpc) (estimated)[1] |
| Apparent size (V) | 1.3′ × 1.3′[1] |
| Other designations | |
| IRAS F00009-1101, 2MASX J00033214-1044403, MCG -02-01-013, PGC 243[1] | |
NGC 7808 is an active Seyfert I galaxy.[1][3]
One supernova has been observed in NGC 7808: SN 2023qnz (Type Ia, mag. 20.14) was discovered by Pan-STARRS on 22 August 2023.[4]
Star-forming ring
NGC 7808 contains an outer star-forming ring, observed in ultraviolet rays. According to a 2019 study, the star formation is only above one solar mass per year. It is expected to decrease over time. Nevertheless, star-forming rings like in NGC 7808 still contain enigmatic features and can help astronomers to learn more about the evolutionary processes taken by these galaxies.[5]
