Maia (star)

For other uses, see Maia (disambiguation).
Maia

Maia in the Pleiades cluster
Credit: NASA/ESA/AURA/Caltech
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Pronunciation /ˈmeɪə/[1]
Right ascension 03h 45m 49.6066s[2]
Declination 24° 22′ 03.886″[2]
Apparent magnitude (V) 3.87[3]
Characteristics
Spectral type B8III[4]
U−B color index −0.40[5]
B−V color index −0.07[5]
Variable type Suspected
Astrometry
Radial velocity (Rv)7.40[6] km/s
Proper motion (μ) RA: 20.95[2] mas/yr
Dec.: −45.98[2] mas/yr
Parallax (π)8.51 ± 0.28 mas[2]
Distance380 ± 10 ly
(118 ± 4 pc)
Absolute magnitude (MV)−1.54[7]
Details
Mass3.77[8] M☉
Radius3.59[8] R☉
Luminosity501[8] L☉
Surface gravity (log g)3.89[8] cgs
Temperature12,300[8] K
Metallicity [Fe/H]1.10[9] dex
Rotational velocity (v sin i)33[10] km/s
Age126[8] Myr
Other designations
Maia, 20 Tauri, HR 1149, BD+23°516, HD 23408, HIP 17573, SAO 76155, GC 4500, NSV 01279, WDS J03458+2422
Database references
SIMBADdata

Maia /ˈmeɪə/, designated 20 Tauri (abbreviated 20 Tau), is a star in the constellation of Taurus. It is a blue giant of spectral type B8 III, a chemically peculiar star, and the prototype of the Maia variable class of variable star.

Maia is the fourth-brightest star in the Pleiades open star cluster (Messier 45), after Alcyone, Atlas and Electra. It is surrounded by one of the brighter reflection nebulae within the Pleiades, designated NGC 1432 and sometimes called the Maia Nebula.

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