Zeta Microscopii

ζ Microscopii, Latinised as Zeta Microscopii, is a solitary,^[9] yellow-white hued star in the southern constellation of Microscopium. It is faintly visible to the naked eye with an apparent visual magnitude of +5.31.^[2] Based upon an annual parallax shift of 28.27 mas as seen from the Earth,^[1] it is 115 light years from the Sun. The star is moving away from the Sun with a radial velocity of +4.6 km/s.^[4]

Zeta Microscopii

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Microscopium
Right ascension	21h 02m 57.95290s[1]
Declination	−38° 37′ 53.2099″[1]
Apparent magnitude (V)	5.31[2]
Characteristics
Spectral type	F5 V[3]
B−V color index	+0.41[2]
Astrometry
Radial velocity (Rv)	+4.6[4] km/s
Proper motion (μ)	RA: −29.16[1] mas/yr Dec.: −108.85[1] mas/yr
Parallax (π)	28.27±0.33 mas[1]
Distance	115 ± 1 ly (35.4 ± 0.4 pc)
Absolute magnitude (MV)	2.58[5]
Details
Mass	1.40[6] M☉
Luminosity	7.5[7] L☉
Surface gravity (log g)	3.97[6] cgs
Temperature	6,627±225[6] K
Metallicity [Fe/H]	−0.13[3] dex
Rotational velocity (v sin i)	44.4±2.2[5] km/s
Age	2.2[6] Gyr
Other designations
ζ Mic, CD−39°14089, FK5 790, GC 29363, HD 200163, HIP 103882, HR 8048, SAO 212666[8]
Database references
SIMBAD	data

This is an F-type main-sequence star with a stellar classification of F5 V.^[3] This indicates that, at the age of 2.2^[6] billion years, it is still generating energy through hydrogen fusion at its core. It is radiating 7.5^[7] times the Sun's luminosity from its photosphere at an effective temperature of 6,471 K.^[6] The star has an estimated 1.4^[6] times the mass of the Sun and is spinning with a moderately high projected rotational velocity of 44.4 km/s.^[5]