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71 Tauri

Star in the constellation Taurus

71 Tauri
Summary

Star in the constellation Taurus

| b-v = +0.25 | u-b = +0.13

71 Tauri is a suspected triple star system in the zodiac constellation Taurus, located 146 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.

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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.

References

| access-date=3 September 2025}}

| access-date=2007-01-25 }}

| editor1-last=Batten | editor1-first=Alan Henry | editor2-last=Heard | editor2-first=John Frederick

| display-authors=1 | last1=Samus | first1=N. N.

References

  1. {{cite DR2. 3312759303911629952
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f-type-main-sequence-stars delta-scuti-variables triple-star-systems taurus-(constellation) objects-with-variable-star-designations durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects hyades-(star-cluster)
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