Maia (star)
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Pronunciation | /ˈmeɪə/ |
| Right ascension | 03h 45m 49.6066s |
| Declination | +24° 22′ 03.886″ |
| Apparent magnitude (V) | 3.87 |
| Characteristics | |
| Spectral type | B8III |
| U−B color index | −0.40 |
| B−V color index | −0.07 |
| Variable type | Rotating variable |
| Astrometry | |
| Radial velocity (Rv) | 7.40 km/s |
| Proper motion (μ) | RA: 20.95 mas/yr Dec.: −45.98 mas/yr |
| Parallax (π) | 8.51±0.28 mas |
| Distance | 444 ly (136 pc) |
| Absolute magnitude (MV) | −1.54 |
| Details | |
| Mass | 4.74±0.25 M☉ |
| Radius | 6.61±0.11 R☉ |
| Luminosity | 501 L☉ |
| Surface gravity (log g) | 3.89 cgs |
| Temperature | 12,550±150 K |
| Metallicity [Fe/H] | 1.10 dex |
| Rotational velocity (v sin i) | 33 km/s |
| Age | 126 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 | |
| SIMBAD | data |
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.
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.