Theta Virginis

From Wikipedia, the free encyclopedia
Jump to: navigation, search
θ Virginis
Virgo IAU.svg
Cercle rouge 100%.svg

Location of θ Virginis.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Virgo
Right ascension 13h 09m 57.0s
Declination −5° 32' 20"
Apparent magnitude (V) +4.38
Distance 415 ± 59 ly
(127 ± 18 pc)
Spectral type A1IVs+Am
Other designations
51 Virginis, HR 4963, HD 114330, BD-04 3430, FK5 490, HIP 64238, SAO 139189, GC 17828, ADS 8801.

Theta Virginis (θ Vir, θ Virginis) is a star system in the constellation Virgo. It is approximately 415 light years from Earth.

The primary component, Theta Virginis A, is a white A-type subgiant with an apparent magnitude of +4.38. It is a spectroscopic binary whose components have magnitudes +4.6 and +6.8. The system has an orbital period of about 14 years. The separation of the components is 0.48 arcseconds. The binary star is orbited by the 9th magnitude A- or F-type Theta Virginis B, which is 7.1 arcseconds distant. A fourth component, Theta Virginis C, is 69.6 arcseconds away and has an apparent magnitude of 10.4.