Tau1 Gruis b

Tau¹ Gruis b, also known as HD 216435 b, is an extrasolar planet approximately 109 light-years away in the constellation of Grus (the Crane). The planet was discovered orbiting the star Tau¹ Gruis in September 2002. It was calculated that the planet orbits its sun at an average distance of 2.7 astronomical units. The planet is over 1.25 times as massive as Jupiter.

Tau¹ Gruis b

Discovery
Discovered by	Jones, et al.
Discovery site	Australia
Discovery date	17 September 2002
Detection method	Doppler spectroscopy
Orbital characteristics
Semi-major axis	2.561 AU (383.1 million km)
Eccentricity	0.0703 ± 0.0781
Orbital period (sidereal)	1,311 ± 49 d
Time of periastron	2,450,870 ± 210
Argument of periastron	99.8
Semi-amplitude	19.6 ± 1.5
Star	Tau1 Gruis

See also

• 55 Cancri
• Phi2 Pavonis
• Rho Indi b

References

• Jones; Butler, R. Paul; Tinney, C. G.; Marcy, Geoffrey W.; Penny, Alan J.; McCarthy, Chris; Carter, Brad D. (2003). "An exoplanet in orbit around τ1 Gruis". Monthly Notices of the Royal Astronomical Society. 341 (3): 948–952. arXiv:astro-ph/0209302. Bibcode:2003MNRAS.341..948J. doi:10.1046/j.1365-8711.2003.06481.x. S2CID 1575040. (web Preprint)

External links

• "Notes for planet HD 216435 b". Extrasolar Planets Encyclopaedia. Retrieved 2008-06-22.
• "Tau1 Gruis". Solstation. Retrieved 2008-06-22.