Zeta Virginis

ζ Virginis
(incl. Heze)
Location of ζ Virginis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension 13h 34m 41.591s[1]
Declination –00° 35′ 44.95″[1]
Apparent magnitude (V) +3.376[2]
Characteristics
Spectral type A3 V[3]
U−B color index +0.141[2]
B−V color index +0.114[2]
Astrometry
Radial velocity (Rv)–13.2[2] km/s
Proper motion (μ) RA: –280.48 ± 0.17[1] mas/yr
Dec.: +49.05 ± 0.12[1] mas/yr
Parallax (π)44.03 ± 0.19 mas[1]
Distance74.1 ± 0.3 ly
(22.71 ± 0.10 pc)
Absolute magnitude (MV)1.64±0.05[4]
Details
ζ Vir A
Mass2.041±0.024[4] M☉
Radius2.079±0.025[5] R☉
Luminosity17.885±0.252[5] L☉
Surface gravity (log g)4.12 cgs
Temperature8247±52[5] K
Rotational velocity (v sin i)222[6] km/s
Age0.51[7] Gyr
ζ Vir B
Mass0.168+0.012
−0.016[4] M☉
Other designations
Heze (primary), 79 Virginis, BD+00°3076, FK5 501, GJ 3792, HD 118098, HIP 66249, HR 5107, SAO 139420, WDS J13347-0036, NT3, NGCA-V98
Database references
SIMBADdata

Zeta Virginis (ζ Virginis, abbreviated Zeta Vir, ζ Vir) is a binary star in the zodiac constellation of Virgo. It is visible to the naked eye with an apparent visual magnitude of +3.376 and is located about a half degree south of the celestial equator. Based on parallax measurements obtained during the Hipparcos mission, it is about 74 light-years (23 parsecs) distant from the Sun.

The two components are designated Zeta Virginis A (officially named Heze /ˈhiːziː/, a mid-20th-century name for the system)[8][9] and B.

  1. ^ a b c d e Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Hip_Heze was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Alcyone was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference apj712_1_421 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference kalerAC was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference aaa463_2_671 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference apj653_1_675 was invoked but never defined (see the help page).
  8. ^ Kunitzsch, Paul; Smart, Tim (2006). A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations (2nd rev. ed.). Cambridge, Massachusetts: Sky Pub. ISBN 978-1-931559-44-7.
  9. ^ "Naming Stars". IAU.org. Retrieved 18 June 2018.