Zeta Microscopii

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]
Distance115 ± 1 ly
(35.4 ± 0.4 pc)
Absolute magnitude (MV)2.58[5]
Details
Mass1.40[6] M☉
Luminosity7.5[7] L☉
Surface gravity (log g)3.97[6] cgs
Temperature6,627±225[6] K
Metallicity [Fe/H]−0.13[3] dex
Rotational velocity (v sin i)44.4±2.2[5] km/s
Age2.2[6] Gyr
Other designations
ζ Mic, CD−39° 14089, FK5 790, GC 29363, HD 200163, HIP 103882, HR 8048, SAO 212666[8]
Database references
SIMBADdata

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]

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]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Corben1968 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Gray2006 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Wielen1999 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference AmmlerVonEiff2012 was invoked but never defined (see the help page).
  6. ^ a b c d e f g Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).