35 Pegasi

35 Pegasi is a single^[13] star in the northern constellation of Pegasus. It is visible to the naked eye as a faint, orange-hued point of light with an apparent visual magnitude of 4.80.^[2] The star is located approximately 155 light years away from the Sun based on parallax,^[5] and is drifting further away with a radial velocity of +54 km/s.^[4] The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.318 arc seconds per annum.^[14]

35 Pegasi

Location of 35 Pegasi (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Pegasus
Right ascension	22h 27m 51.52233s[1]
Declination	4° 41′ 44.3916″[1]
Apparent magnitude (V)	4.80[2]
Characteristics
Evolutionary stage	horizontal branch
Spectral type	K0III[3]
U−B color index	+0.88[2]
B−V color index	+1.06[2]
Astrometry
Radial velocity (Rv)	+54.16[4] km/s
Proper motion (μ)	RA: +77.57[5] mas/yr Dec.: −306.12[5] mas/yr
Parallax (π)	21.0039±0.2419 mas[1]
Distance	155 ± 2 ly (47.6 ± 0.5 pc)
Absolute magnitude (MV)	1.50[6]
Details
Mass	1.18[6] M☉
Radius	8.5[7] R☉
Luminosity	31.69[8] L☉
Surface gravity (log g)	2.76[9] cgs
Temperature	4,676[9] K
Metallicity [Fe/H]	−0.28[9] dex
Rotational velocity (v sin i)	1.5[10] km/s
Age	4.94[11] Gyr
Other designations
35 Peg, BD+03°4710, FK5 3796, GC 31377, HD 212943, HIP 110882, HR 8551, SAO 127540, CCDM J22278+0441A, WDS J22279+0442A, LTT 16582[12]
Database references
SIMBAD	data

This is an aging giant star^[15] with a stellar classification of K0III,^[3] having exhausted the hydrogen at its core and expanded to 8.5^[7] times the Sun's radius. It is a red clump giant, indicating it is on the horizontal branch and is generating energy through helium fusion at its core.^[15] The star is five^[11] billion years old with 1.2^[6] times the mass of the Sun. It is radiating 32^[8] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,676 K.^[9]

There are two distant visual companions: component B, at an angular separation of 80.5″ and magnitude 10.0, and C, at separation 176.3″ and magnitude 10.64.^[16]