ε Phoenicis

Location of ε Phoenicis (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Phoenix
Right ascension	00h 09m 24.640s[1]
Declination	−45° 44′ 50.73″[1]
Apparent magnitude (V)	3.87[2]
Characteristics
Evolutionary stage	Red clump[3]
Spectral type	K0III[4]
U−B color index	+0.84[2]
B−V color index	+1.02[2]
Astrometry
Radial velocity (Rv)	−9.20[5] km/s
Proper motion (μ)	RA: +120.393 mas/yr[1] Dec.: −179.597 mas/yr[1]
Parallax (π)	22.6081±0.1481 mas[1]
Distance	144.3 ± 0.9 ly (44.2 ± 0.3 pc)
Absolute magnitude (MV)	0.65[6]
Details[7]
Mass	1.93±0.23 M☉
Radius	10.03±0.22 R☉
Luminosity	50.4±1.5 L☉
Surface gravity (log g)	2.560±0.103 cgs
Temperature	4,862±42[8] K
Metallicity [Fe/H]	+0.00±0.08[8] dex
Rotational velocity (v sin i)	< 1.5[9] km/s
Other designations
FK5 3, GC 158, HD 496, HIP 765, HR 25, SAO 214983[10]
Database references
SIMBAD	data

Epsilon Phoenicis is a star in the southern constellation of Phoenix. It is visible to the naked eye with an apparent visual magnitude of 3.87.^[2] The distance to this star is approximately 144 light years based on parallax measurements, but it is drifting closer with a heliocentric radial velocity of −9.2 km/s.^[5]

This is an evolved giant star with a stellar classification of K0III,^[4] a star that has used up its core hydrogen and has expanded. It is a red clump star, indicating that it has passed the red-giant branch, undergone a helium flash and is currently on the core helium-fusing horizontal branch.^[3] Epsilon Phoenicis is about two times more massive than the Sun, and expanded to ten times its radius. It radiates 50 the luminosity of the Sun from its photosphere^[7] at an effective temperature of 4,862 K. Based on the elemental abundance of iron in the stellar atmosphere, the metallicity of Epsilon Phoenicis is similar to that of the Sun.^[8]

References

This giant-star-related article is a stub. You can help Wikipedia by adding missing information.

• v
• t
• e