Epoch J2000 Equinox J2000
|Right ascension||11h 50m 41.71824s|
|Declination||+1° 45′ 52.9910″|
|Apparent magnitude (V)||3.604|
|Spectral type||F9 V|
|U−B color index||+0.090|
|B−V color index||+0.553|
|Radial velocity (Rv)||+4.1 km/s|
|Proper motion (μ)||RA: +740.23 mas/yr
Dec.: -270.43 mas/yr
|Parallax (π)||91.50 ± 0.22 mas|
|Distance||35.65 ± 0.09 ly
(10.93 ± 0.03 pc)
|Absolute magnitude (MV)||3.41|
|Radius||1.681 ± 0.008 R☉|
|Luminosity||3.572 ± 0.052 L☉|
|Surface gravity (log g)||4.25 cgs|
|Temperature||6,132 ± 26 K|
|Metallicity [Fe/H]||0.20 dex|
|Rotational velocity (v sin i)||4.3 km/s|
|Age||2.9 ± 0.3 Gyr|
Beta Virginis (β Vir, β Virginis) is a star in the constellation Virgo. It has the traditional names Zavijava (also Zavijah) and Alaraph. Despite being the beta star of the constellation Virgo it is only the fifth star in order of brightness.
Physically, Beta Virginis is larger and more massive than the Sun, and is comparatively metal-rich (that is, it has a higher preponderance of elements heavier than helium).
This was the star Einstein used during the solar eclipse of September 21, 1922, to determine the speed of light in space,[dubious ] as it was close to the Sun.
The medieval name Zavijava (Zavijah, Zavyava, Zawijah) is from the Arabic زاوية العواء zāwiyat al-cawwa’ "Corner of the barking (dog)". Another name was Alaraph.
In Chinese, 太微右垣 (Tài Wēi Yòu Yuán), meaning Right Wall of Supreme Palace Enclosure, refers to an asterism consisting of β Virginis, σ Leonis, ι Leonis, θ Leonis and δ Leonis. Consequently, β Virginis itself is known as 太微右垣一 (Tài Wēi Zuǒ Yuán yī, English: the First Star of Right Wall of Supreme Palace Enclosure.), representing 右執法 (Yòuzhífǎ), meaning The The Right Law Administrator. 右執法 (Yòuzhífǎ), spelled Yew Chi Fa by R.H. Allen, means "the Right-hand Maintainer of Law" 
Hunt for substellar objects
According to Nelson & Angel (1998), Beta Virginis could host two or three jovian planets in wide orbits. The authors have set an upper limit of 1.9, 5 and 23 Jupiter masses for the putative planets with orbital periods of 15, 25 and 50 years respectively. Also Campbell et al. 1988 inferred the existence of planetary objects or even brown dwarfs around Beta Virginis. However more recent studies have not confirmed the existence of any substellar companion around Beta Virginis yet. McDonald Observatory team has set limits to the presence of one or more planets with masses between 0.16 and 4.2 Jupiter masses and average separations spanning between 0.05 and 5.2 Astronomical Units.
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