41 Andromedae

41 Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 01h 08m 00.85266s[1]
Declination +43° 56′ 31.5254″[1]
Apparent magnitude (V) 5.04[2]
Characteristics
Spectral type A2IIIvs[3] (kA2hA6mA6[4])
U−B color index +0.14[2]
B−V color index +0.11[2]
Astrometry
Radial velocity (Rv)+9.5±0.7[5] km/s
Proper motion (μ) RA: +159.581±0.361[1] mas/yr
Dec.: −60.487±0.117[1] mas/yr
Parallax (π)16.4320 ± 0.1767 mas[1]
Distance198 ± 2 ly
(60.9 ± 0.7 pc)
Absolute magnitude (MV)1.19[6]
Details
Mass2.27[7] M☉
Luminosity28.53[6] L☉
Surface gravity (log g)4.04[2] cgs
Temperature8,511[2] K
Rotational velocity (v sin i)84[8] km/s
Age450[7] Myr
Other designations
41 And, BD+43° 234, HD 6658, HIP 5317, HR 324, SAO 36950, PPM 43666[9]
Database references
SIMBADdata

41 Andromedae is a single[10] star in the northern constellation of Andromeda. 41 Andromedae is the Flamsteed designation. It is bright enough to be faintly visible to the naked eye, having an apparent visual magnitude of 5.04.[2] Based upon an annual parallax shift of 16.4 mas,[1] it is located 198 light years away. The star is moving further from the Earth with a heliocentric radial velocity of +10 km/s[5] and it has a relatively high rate of proper motion, traversing the celestial sphere at the rate of 0.171″ per year.[11]

The stellar classification for this star is A2IIIvs,[3] matching an A-type giant star with narrow (sharp) absorption lines. Abt and Levy (1985) classed it as a kA2hA6mA6[4] star, which indicates the spectrum has the calcium K line of an A2 star, the hydrogen lines of an A6 star, and the metal lines of an A6 star. It is around 450[7] million years old and is spinning with a projected rotational velocity of 84 km/s.[8] The star has 2.27[7] times the mass of the Sun and is radiating 29[6] times the Sun's luminosity from its photosphere at an effective temperature of 8,511 K.[2]

  1. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference Baines2018 was invoked but never defined (see the help page).
  3. ^ a b Barry, Don C. (1970). "Spectral Classification of a and F Stars". Astrophysical Journal Supplement. 19: 281. Bibcode:1970ApJS...19..281B. doi:10.1086/190209.
  4. ^ a b Cite error: The named reference abt was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference DeRosa2014 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Royer2002 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 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).