Tau Boötis b

extrasolar planet

Tau Boötis b is an extrasolar planet. It is approximately 51 light years away.[1] The temperature of Tau Boötis b is 1600 K.

Artist's impression of the exoplanet Tau Boötis b orbiting Tau Boötis


It was discovered in 1996. It was one of the first extrasolar planets that was discovered. It was discovered orbiting the star Tau Boötis b by Paul Butler and his team. They used the radial velocity method to find the planet.[2]

Orbit and massEdit

Tau Boötis b has a mass that is over four times the mass of Jupiter. One orbital revolution takes 3 days 7.5 hours.


  1. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-09-23.
  2. Butler, R. Paul; Marcy, Geoffrey W.; Williams, Eric; Hauser, Heather; Shirts, Phil (1997-01-10). "Three New "51 Pegasi–Type" Planets". The Astrophysical Journal. 474 (2): L115–L118. doi:10.1086/310444.