54 Persei
04h20m 24.63885s[1]
34° 34′ 00.2033″[1]
4.93[2]
Characteristics
G8+ IIIb[3]
U−B color index
+0.69[4]
B−V color index
+0.95[4]
Radial velocity (Rv)
−26.82[5] km/s
Proper motion (μ)
RA: −25.046[1] mas/yr
Dec.: −6.420[1] mas/yr
Parallax (π)
Absolute magnitude (MV)
0.80[6]
Details[7]
2.57±0.10 M☉
9.37±0.22 R☉
50.7±2.0 L☉
Surface gravity (log g)
2.93±0.03 cgs
5,036±32 K
Metallicity [Fe/H]
+0.11±0.10 dex
Rotational velocity (v sin i)
1.8[8] km/s
580±90 Myr
Database references
54 Persei is a single[10] star in the northern constellationofPerseus. It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.93.[2] The star is located approximately 220 light years away based on parallax, but is drifting closer with a radial velocity of −27 km/s.[5]
This is an aging giant star with a stellar classification of G8+ IIIb,[3] a star that has exhausted the supply of hydrogen at its core and expanded to more than nine times the girth of the Sun. It is around 580 million years old with 2.6 times the mass of the Sun. The star is radiating 51 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 5,036 K.[7] It has one distant visual companion, designated component B, at an angular separationof93″ and magnitude 13.0.[11]
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