Zeta Pegasi

Zeta Pegasi
Location of ζ Pegasi (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Pegasus
Right ascension 22h 41m 27.72072s[1]
Declination +10° 49′ 52.9079″[1]
Apparent magnitude (V) +3.414[2]
Characteristics
Spectral type B8 V[3]
U−B color index −0.181[2]
B−V color index −0.088[2]
Variable type SPB[4]
Astrometry
Radial velocity (Rv)+7.0[5] km/s
Proper motion (μ) RA: +77.22[1] mas/yr
Dec.: −11.38[1] mas/yr
Parallax (π)15.96 ± 0.19 mas[1]
Distance204 ± 2 ly
(62.7 ± 0.7 pc)
Details
Mass3.22[6] M☉
Radius4.03±0.22[7] R☉
Luminosity224[6] L☉
Surface gravity (log g)3.67±0.05[7] cgs
Temperature11,190±55[7] K
Metallicity [Fe/H]+0.06[6] dex
Rotational velocity (v sin i)140[8] – 210[9] km/s
Age120[9] Myr
Other designations
Homam, Zeta Peg, ζ Peg, 42 Peg, BD+10°4797, FK5 855, HD 214923, HIP 112029, HR 8634, SAO 108103[10]
Database references
SIMBADdata

Zeta Pegasi or ζ Pegasi, formally named Homam (/ˈhoʊmæm/),[11][12] is a single[13] star in the northern constellation of Pegasus. With an apparent visual magnitude of +3.4,[2] 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.[1]

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