32 Persei

This article is about l Persei and is not to be confused with i Persei or ι (iota) Persei.

32 Persei is a single^[12] star located 149^[1] light years away from the Sun in the northern constellation of Perseus.^[11] It has the Bayer designation of l Persei, while 32 Persei is the Flamsteed designation. This object is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.96.^[2] It is moving closer to the Earth with a heliocentric radial velocity of −9 km/s,^[5] and is a member of the Sirius supercluster: a stream of stars that share a common motion through space.^[13]

32 Persei

Location of 32 Persei (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Perseus
Right ascension	03h 21m 26.55723s[1]
Declination	43° 19′ 46.7414″[1]
Apparent magnitude (V)	4.96[2]
Characteristics
Spectral type	A3V[3]
U−B color index	+0.07[4]
B−V color index	+0.04[4]
Astrometry
Radial velocity (Rv)	−9.00[5] km/s
Proper motion (μ)	RA: −59.947[1] mas/yr Dec.: −0.839[1] mas/yr
Parallax (π)	21.8865±0.2690 mas[1]
Distance	149 ± 2 ly (45.7 ± 0.6 pc)
Absolute magnitude (MV)	1.64[2]
Details
Mass	2.05[6] M☉
Radius	1.8[7] R☉
Luminosity	21[6] L☉
Surface gravity (log g)	4.19[8] cgs
Temperature	8,872[6] K
Metallicity [Fe/H]	−0.01[9] dex
Rotational velocity (v sin i)	144[6] km/s
Age	125+75 −25[10] Myr
Other designations
l Per, 32 Per, NSV 1107, BD+42°750, FK5 2236, GC 4004, HD 20677, HIP 15648, HR 1002, SAO 38750[11]
Database references
SIMBAD	data

This is an ordinary A-type main-sequence star with a stellar classification of A3V.^[3] It is around 125^[10] million years old with a high rate of spin, showing a projected rotational velocity of 144 km/s.^[6] The star has double^[6] the mass of the Sun and 1.8^[7] times the Sun's radius. It is radiating 21^[6] times the luminosity of the Sun from its photosphere at an effective temperature of 8,872 K.^[6]