Neha Patil (Editor)

Tau Centauri

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Magnitude  3.86
Constellation  Centaurus
People also search for  Sigma Centauri, Pi Centauri, HD 117440

τ Centauri (tau Centauri) - Star in Centaurus | TheSkyLive.com

Tau Centauri (τ Cen, τ Centauri) is a solitary star in the southern constellation of Centaurus. It is visible to the naked eye with an apparent visual magnitude of +3.86. The distance to this star, based upon an annual parallax shift of 24.85 mas, is 131 light years. There is a 98% chance that it is a co-moving companion of Gamma Centauri; the two stars have an estimated separation of 1.7 ly (0.53 pc).

This is an A-type star with stellar classifications of A0 V or A1 IVnn, indicating it may be a main sequence star or a more evolved subgiant star. It is around 132 million years old and is spinning rapidly with a projected rotational velocity of 296.8 km/s. This is giving the star an oblate shape, with an estimated equatorial girth that is 30% larger than the polar radius. The star has an estimated 2.3 times the mass of the Sun and 2.2 times the Sun's radius.

References

Tau Centauri Wikipedia


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