Aldebaran

The position of Aldebaran in the Taurus constellation.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Taurus
Right ascension 04
Declination +16° 30′ 33.49″
Apparent magnitude (V) 0.75-0.95
Characteristics
Spectral type K5III
Apparent magnitude (J) -2.10
U−B color index 1.90
B−V color index 1.54
Variable type LB
Astrometry
Radial velocity (Rv) +54.26 ±0.03 km/s
Proper motion (μ) RA: 62.78 ±0.89 mas/yr
Parallax (π) 50.09 ± 0.95 mas
Distance 65 ± 1 ly
(20.0 ± 0.4 pc)
Absolute magnitude (MV) −0.63
Details
Mass 1.7M
Radius 44.2 ± 0.9R
Luminosity 518 ± 32L
Surface gravity (log g) 1.59
Temperature 3,910K
Metallicity 70% Sun
Metallicity [Fe/H] –0.34dex
Rotation 643 days
Other designations
87 Tauri, Alpha Tauri, BD +16°629, GJ 171.1, GJ 9159, HD 29139, HIP 21421, HR 1457, SAO 94027
Database references
SIMBAD data
ARICNS data

Get more info about Aldebaran in Wikipedia

This article uses material from the Wikipedia article
Aldebaran, which is released under the Creative Commons Attribution-Share-Alike License 3.0