Tau Tauri

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τ Tauri
Observation data
Epoch J2000.0
Constellation Taurus
Right ascension 04h 42m 14.7s
Declination +22° 57' 25"
Apparent magnitude (V) +4.27
Distance 401 ± 38 ly
(123 ± 12 pc)
Spectral type B3V
Other designations
94 Tauri, HR 1497,
HD 29763, BD+22 739,
FK5 174, HIP 21881,
SAO 76721, GC 5716,
BDS 2313, CCDM 04422+2257

Tau Tauri (τ Tau / τ Tauri) is a triple star system in the constellation Taurus. It is approximately 401 light years from Earth.

The primary component, Tau Tauri A, is a blue-white B-type main sequence dwarf with an apparent magnitude of +4.27. It has a close companion 0.1 arcseconds away which has a magnitude of +8.9. At a separation of 63 arcseconds is the third component of the system, Tau Tauri C, which is classified as a white A-type star and has a magnitude of +8.6.


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