Star in the constellation Virgo
β Virginis (Zavijava)
Location of β Virginis (circled)
Observation data
Epoch J2000
Equinox J2000
Constellation
Virgo
Right ascension
11h 50m 41.71824s
[1]
Declination
+01° 45′ 52.9910″
[1]
Apparent magnitude (V)
3.604
[2]
Characteristics
Evolutionary stage
Main sequence
[3]
Spectral type
F9 V
[4]
U−B
color index
+0.090
[2]
B−V
color index
+0.553
[2]
Astrometry
Radial velocity (Rv ) +4.1
[5] km/s
Proper motion (μ)
RA: +740.23
[1]
mas /
yr
Dec.: −270.43
[1]
mas /
yr
Parallax (π) 91.50 ± 0.22
mas
[1]
Distance 35.65 ± 0.09
ly (10.93 ± 0.03
pc )
Absolute magnitude (MV ) 3.41
[5]
Details
Mass 1.413± 0.061
[3]
M ☉
Radius 1.681± 0.008
[6]
R ☉
Luminosity 3.572± 0.052
[6]
L ☉
Surface gravity (log g ) 4.125± 0.010
[3]
cgs
Temperature 6,132± 26
[6]
K
Metallicity [Fe/H]0.20
[7]
dex
Rotational velocity (v sin i ) 4.3
[8] km/s
Age 2.9 ± 0.3
[5]
Gyr
Other designations Zavijava, Zavijah, Alaraph, Minelauva,
β Vir ,
5 Virginis ,
BD +02°2489 ,
FK5 445,
HD 102870,
HIP 57757,
HR 4540,
SAO 119076
[9]
Database references
SIMBAD
data ARICNS
data
Beta Virginis , a name
Latinised from β Virginis , is a
star in the
equatorial
constellation of
Virgo . It has the proper name Zavijava (),
[10]
[11]
[12] and, despite its designation '
beta ', is the fifth-brightest star in Virgo with an
apparent visual magnitude of 3.604.
[2] The distance to this star is 35.7
light-years based on
parallax ,
[1] and it is drifting further away with a
radial velocity of +4.1 km/s.
[5] It is 0.69 of a degree north of the
ecliptic , so it can be
occulted by the
Moon and (rarely) by
planets . The next planetary occultation of Beta Virginis will take place on 09 november 2210, by
Venus .
[13]
Properties
This is an
F-type main-sequence star with a
stellar classification of F9 V,
[4] which means it is generating energy through
core
hydrogen fusion .
Sun-like oscillations have been detected in Beta Virginis, allowing its internal structure to be modeled in more detail.
[14] It is around 2.9
[5] billion years old with a
projected rotational velocity of 4.3 km/s
[8] and appears to be near the end of its
main sequence lifetime.
[3] Larger and more massive than the Sun, it is comparatively
metal-rich (that is, it has a higher preponderance of elements heavier than
helium ).
[7] It is radiating 3.6
[6] times the
luminosity of the Sun from its
photosphere at an
effective temperature of 6,132
K .
[6]
According to Nelson & Angel (1998),
[15] 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
[16] 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
[17] with masses between 0.16 and 4.2 Jupiter masses and average separations spanning between 0.05 and 5.2
astronomical units .
Nomenclature
β Virginis (
Latinised to Beta Virginis ) is the star's
Bayer designation .
It bore the traditional names Zavijava (also Zavijah , Zavyava and Zawijah ) and Alaraph .
[18] Zavijava is from the
Arabic زاوية العواء zāwiyat al-c awwa’ 'corner of the barking (dog)'. In 2016, the
International Astronomical Union organized a
Working Group on Star Names (WGSN)
[19] to catalog and standardize proper names for stars. The WGSN approved the name Zavijava for this star on 21 August 2016 and it is now so entered in the IAU Catalog of Star Names.
[12]
In
Chinese , 太微右垣 (Tài Wēi Yòu Yuán ), meaning
Right Wall of Supreme Palace Enclosure , refers to an
asterism consisting of Beta Virginis,
Sigma Leonis ,
Iota Leonis ,
Theta Leonis and
Delta Leonis .
[20] Consequently, the
Chinese name for Beta Virginis itself is 太微右垣一 (Tài Wēi Zuǒ Yuán yī , English: Supreme Palace Enclosure Right Wall One ),
[21] representing 右執法 (Yòuzhífǎ ), meaning The Right Law Administrator .
[22] 右執法 (Yòuzhífǎ), spelled Yew Chi Fa by R.H. Allen, means "the Right-hand Maintainer of Law".
[23]
References
^
a
b
c
d
e
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^
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^
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External links
Kaler, James B. (2007).
"Zavijava" . STARS . Retrieved 2021-01-19 .
"Zavijah" . Alcyone. Retrieved 2007-06-06 .