Alpha Cephei

Location of α Cephei (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Cepheus
Right ascension 21
Declination 62° 35′ 08.061″
Apparent magnitude (V) 2.5141
Characteristics
Spectral type A7IV-V
U−B color index +0.12
B−V color index +0.21
Variable type Delta Scuti
Astrometry
Radial velocity (Rv) -10 km/s
Proper motion (μ) RA: +150.55 mas/yr
Parallax (π) 66.50 ± 0.11mas
Distance 49.05 ± 0.08 ly
(15.04 ± 0.02 pc)
Absolute magnitude (MV) 1.57
Details
Mass 1.74M
Radius 2.3R
Luminosity 17L
Surface gravity (log g) 3.99
Temperature 7,740 ± 170K
Rotational velocity (v sin i) 246 km/s
Other designations
Alderamin, 5 Cep, 2MASS J21183475+6235081, AG+62° 1226, BD +61°2111, CCDM J21186+6236A, FK5 803, GCTP 5139.00, Gl 826, HD 203280, HIP 105199, HR 8162, SAO 19302.
Database references
SIMBAD data

Get more info about Alderamin in Wikipedia

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