HD 216770 b

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HD 216770 b
Discovery
Discovered by Mayor et al.
Discovery site Flag of the United States.svg California, USA
Discovery dateJune 30, 2003
Doppler spectroscopy
Orbital characteristics
Apastron 0.63 AU (94,000,000 km)
Periastron 0.29 AU (43,000,000 km)
0.46 AU (69,000,000 km)
Eccentricity 0.37 ± 0.06
118.45 ± 0.55 d
0.32429 y
Average orbital speed
42
2,452,672 ± 3.5
281 ± 10
Semi-amplitude 30.9 ± 1.9
Star HD 216770
Physical characteristics
Mass >0.65 MJ

    HD 216770 b is an extrasolar planet orbiting the star HD 216770. It has a mass about two thirds that of Jupiter, largest planet in the Solar System. But unlike the gas giants in the Solar System, it orbits in a very eccentric orbit around the star. The mean distance from the star is slightly larger than Mercury's, and it completes one orbit around the star in every 118 days. [1]

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    References

    1. Mayor, M.; et al. (2004). "The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE". Astronomy and Astrophysics. 415 (1): 391–402. arXiv: astro-ph/0310316 . Bibcode:2004A&A...415..391M. doi:10.1051/0004-6361:20034250. S2CID   5233877.