W Andromedae

W Andromedae

The visual band light curve of W Andromedae, from AAVSO data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 02h 17m 32.96122s[2]
Declination +44° 18′ 17.7573″[2]
Apparent magnitude (V) 6.7 – 14.6[3]
Characteristics
Spectral type S6,1e-S9,2e[3]
Variable type Mira[3]
Astrometry
Radial velocity (Rv)−38.19±0.4[4] km/s
Proper motion (μ) RA: −0.162[2] mas/yr
Dec.: −2.516[2] mas/yr
Parallax (π)2.2125 ± 0.0953 mas[2]
Distance1,470 ± 60 ly
(450 ± 20 pc)
Absolute magnitude (MV)−5.27[5]
Details
Mass5.6[6] M☉
Luminosity8,394[7] L☉
Surface gravity (log g)−0.61[6] cgs
Temperature3,030[6] K
Metallicity [Fe/H]0.003[6] dex
Other designations
HD 14028, BD+43 461a, HIP 10687, HR 663
Database references
SIMBADdata

W Andromedae is a variable star in the constellation of Andromeda. It is classified as a Mira variable and S-type star,[8] and varies from an apparent visual magnitude of 14.6 at minimum brightness to a magnitude of 6.7 at maximum brightness, with a period of approximately 397.3 days.[3] The star is losing mass due to stellar winds at a rate of 2.79×10−7 M☉/yr.[5]

  1. ^ Cite error: The named reference aavso was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Gaia was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference gcvs was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Famaey2005 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Guandalini2010 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference starhorse2 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference mcdonald2012 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference VSX was invoked but never defined (see the help page).