Schedar, α Cas

Shedar is the α star found at the bottom right of the "W"
Observation data
Epoch J2000      Equinox J2000
Constellation Cassiopeia
Right ascension 00
Declination +56° 32′ 14.392″
Apparent magnitude (V) 2.240
Characteristics
Spectral type K0IIIa
U−B color index 1.14
B−V color index 1.16
Variable type Suspected
Astrometry
Radial velocity (Rv) −4.31 km/s
Proper motion (μ) RA: 50.36 mas/yr
Parallax (π) 14.29 ± 0.15mas
Distance 228 ± 2 ly
(70.0 ± 0.7 pc)
Absolute magnitude (MV) −1.985
Details
Mass 4–5M
Radius 42.1 ± 1.7R
Luminosity 676L
Temperature 4,530K
Metallicity [Fe/H] –0.1dex
Rotational velocity (v sin i) 21 km/s
Age 1–2×10 years
Other designations
α Cas, 18 Cas, HR 168, BD+55°139, HD 3712, SAO 21609, FK5 21, HIP 3179, GC 792, ADS 561, CCDM J00405+5632
Database references
SIMBAD data

Get more info about Shedir in Wikipedia

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