Zeta Pegasi
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Pegasus |
| Right ascension | 22h 41m 27.72072s |
| Declination | +10° 49′ 52.9079″ |
| Apparent magnitude (V) | +3.414 |
| Characteristics | |
| Spectral type | B8 V |
| U−B color index | −0.181 |
| B−V color index | −0.088 |
| Variable type | SPB |
| Astrometry | |
| Radial velocity (Rv) | +7.0 km/s |
| Proper motion (μ) | RA: +77.22 mas/yr Dec.: −11.38 mas/yr |
| Parallax (π) | 15.96±0.19 mas |
| Distance | 204 ± 2 ly (62.7 ± 0.7 pc) |
| Details | |
| Mass | 3.22 M☉ |
| Radius | 4.23±0.25 R☉ |
| Luminosity | 224 L☉ |
| Surface gravity (log g) | 3.67±0.05 cgs |
| Temperature | 12,300±1,000 K |
| Metallicity [Fe/H] | +0.06 dex |
| Rotational velocity (v sin i) | 140 – 210 km/s |
| Age | 120 Myr |
| Other designations | |
| Homam, Zeta Peg, ζ Peg, 42 Peg, BD+10°4797, FK5 855, HD 214923, HIP 112029, HR 8634, SAO 108103 | |
| Database references | |
| SIMBAD | data |
Zeta Pegasi or ζ Pegasi, formally named Homam (/ˈhoʊmæm/), is a single star in the northern constellation of Pegasus. With an apparent visual magnitude of +3.4, this star is bright enough to be seen with the naked eye and is one of the brighter members of Pegasus. Parallax measurements place it at a distance of around 204 light-years (62.7 parsecs) from the Sun.