Astronomy and Space

71 Tauri

71 Tauri is a suspected triple star system in the zodiac constellation Taurus, located 152 light years from the Sun. It is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of +4.48. The star is moving further away from the Earth with a heliocentric radial velocity of +38 km/s. It is a member of the Hyades open cluster. The primary component is an F-type main-sequence star with a stellar classification of F0 V. In 1979, Stephen Horan discovered that 71 Tauri is a variable star. It was given its variable star designation, V777 Tauri, in 1981. It is a Delta Scuti variable with an amplitude of 0.02 in magnitude and a frequency of 0.16 d−1. This star has about 1.94 times the mass of the Sun and 3.34 times the Sun's radius. It has a projected rotational velocity of 192 km s−1, for an estimated rotation period of 14.2 days. Extreme ultraviolet flares have been observed coming from this star's hot corona, and it is the second brightest X-ray source in the Hyades.

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See also

• ▸ARIEL
• ▸Churchill, Manitoba
• ▸Animals in space

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