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35 Pegasi

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]
Distance155 ± 2 ly
(47.6 ± 0.5 pc)
Absolute magnitude (MV)1.50[6]
Details
Mass1.18[6] M☉
Radius8.5[7] R☉
Luminosity31.69[8] L☉
Surface gravity (log g)2.76[9] cgs
Temperature4,676[9] K
Metallicity [Fe/H]−0.28[9] dex
Rotational velocity (v sin i)1.5[10] km/s
Age4.94[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
SIMBADdata

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]

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]

  1. ^ a b c Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Ducati2002 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Frasca2009 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Famaey2005 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference DaSilva2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference AllendePrieto was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference XHIP was invoked but never defined (see the help page).
  9. ^ a b c d Cite error: The named reference Wu2011 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Massarotti was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Lepine2005 was invoked but never defined (see the help page).
  15. ^ a b Cite error: The named reference Tautvaišienė2010 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference WDS was invoked but never defined (see the help page).
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