Eta Persei

η Persei

Location of η Per (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Perseus
Right ascension	02h 50m 41.80959s
Declination	+55° 53′ 43.7876″
Apparent magnitude (V)	3.79
Characteristics
Spectral type	K3 Ib
U−B color index	+1.90
B−V color index	+1.69
Astrometry
Radial velocity (Rv)	−1.07 ± 0.27 km/s
Proper motion (μ)	RA: +16.23 mas/yr Dec.: −13.54 mas/yr
Parallax (π)	3.71 ± 0.27mas
Distance	880 ± 60 ly (270 ± 20 pc)
Absolute magnitude (MV)	−4.29
Details
Radius	44 R☉
Luminosity	5,135 L☉
Temperature	4,047 K
Rotational velocity (v sin i)	5.8 km/s
Other designations
η Persei, η Per, Eta Per, 15 Persei, BD+55 714, CCDM J02506+5553A, FK5 99, GC 3390, HD 17506, HIP 13268, HR 834, IDS 02434+5529 A, PPM 28039, SAO 23655, WDS J02507+5554A
Database references
SIMBAD	data

Eta Persei (Eta Per, η Persei, η Per), is a star in the constellation Perseus. It belongs to spectral class K3 and has an apparent magnitude of +3.76. It is approximately 1331 light years away from Earth. This star radiates 35,000 times the luminosity of the Sun.