Alpha Persei

The red dot shows the location of Mirfak in Perseus.
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 03
Declination +49° 51′ 40.2455″
Apparent magnitude (V) 1.806
Characteristics
Spectral type F5 Ib
U−B color index +0.38
B−V color index +0.483
Astrometry
Radial velocity (Rv) –2.04 km/s
Proper motion (μ) RA: +23.75 mas/yr
Parallax (π) 6.44 ± 0.17mas
Distance 510 ± 10 ly
(155 ± 4 pc)
Absolute magnitude (MV) –5.1
Details
Mass 7.3 ± 0.3M
Radius 60 ± 7R
Surface gravity (log g) 1.90 ± 0.04
Temperature 6,350 ± 100K
Metallicity [Fe/H] –0.02dex
Rotational velocity (v sin i) 20 km/s
Age 41Myr
Other designations
Mirfak, Mirphak, Marfak, Algeneb, Algenib, 33 Per, BD+49 917, FK5 120, HD 20902, HIP 15863, HR 1017, SAO 38787.

Get more info about Mirphak in Wikipedia

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