23 Andromedae

23 Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 00h 13m 30.83962s[1]
Declination +41° 02′ 07.3315″[1]
Apparent magnitude (V) 5.71[2]
Characteristics
Spectral type F0 IV[3]
B−V color index +0.331±0.004[2]
Astrometry
Radial velocity (Rv)−27.1±1.2[4] km/s
Proper motion (μ) RA: −123.289[1] mas/yr
Dec.: −146.201[1] mas/yr
Parallax (π)26.8161 ± 0.0858 mas[1]
Distance121.6 ± 0.4 ly
(37.3 ± 0.1 pc)
Absolute magnitude (MV)+3.01[5]
Details
Mass1.43[6] M☉
Luminosity49.9+5.5
−4.9[3] L☉
Surface gravity (log g)4.25[6] cgs
Temperature7,089±241[6] K
Metallicity [Fe/H]−0.13±0.07[7] dex
Rotational velocity (v sin i)36[3] km/s
Age759[6] Myr
Other designations
23 And, BD+40° 29, FK5 2010, HD 905, HIP 1086, HR 41, SAO 36173, PPM 42707[8]
Database references
SIMBADdata

23 Andromedae, abbreviated 23 And, is a presumed single[9] star in the constellation Andromeda, although it has been a suspected spectroscopic binary.[10] 23 Andromedae is the Flamsteed designation. Its apparent visual magnitude is 5.71,[2] which indicates it is dimly visible to the naked eye under good viewing conditions. The distance to 23 And, as determined from its annual parallax shift of 26.8 mas,[1] is 121.6 light years. The star is moving further from the Earth with a heliocentric radial velocity of −27 km/s.[4] It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.191″ per year.[11]

The stellar classification of 23 And is F0 IV,[3] matching an F-type subgiant star that is in the process of evolving into a red giant. It displays a slight microvariability with a frequency of 0.85784 d−1 and an amplitude of 0.0062 magnitude.[12] The star is around 759[6] million years old with a projected rotational velocity of 36 km/s.[3] It has 1.43[6] times the mass of the Sun and is radiating 50[3] times the Sun's luminosity from its photosphere at an effective temperature of 7,089 K.[6]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference zorec2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Holmberg2009 was invoked but never defined (see the help page).
  6. ^ a b c d e f g Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Gaspar2016 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Blanco1982 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Lepine2005 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference koen2002 was invoked but never defined (see the help page).