81 Ceti b

Last updated
81 Ceti b
Discovery
Discovered by Sato et al.
Discovery dateJuly 2, 2008
Doppler Spectroscopy
Orbital characteristics
2.5 AU (370,000,000 km)
Eccentricity 0.206 ± 0.029
952.7 ± 8.8 d
2486 ± 26
175 ± 69
Star 81 Ceti
Physical characteristics
1.14 RJ Estimate
Mass 5.30 MJ [1] [2]

    81 Ceti b (abbreviated 81 Cet b) is an extrasolar planet approximately 331 light years away in the constellation of Cetus. It is estimated to be 5.3 times the mass of Jupiter which also makes it a gas giant. [1] [2] It orbits the K-type giant star 81 Ceti at an average distance of 2.5 AU, taking about 2.6 years to revolve with an eccentricity of 0.206. [3]

    Contents

    Discovery

    The preprint announcing this planet was submitted to the arXiv electronic repository on July 2, 2008, by Bun'ei Sato and collaborators, who discovered it using the Doppler Spectroscopy method, during the Okayama Planet Search radial velocity survey of G and K giants at Okayama Astrophysical Observatory. [3]

    See also

    References

    1. 1 2 NASA 7012
    2. 1 2 81 Ceti b
    3. 1 2 Sato, Bun'ei; et al. (2008). "Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD167042". Publications of the Astronomical Society of Japan. 60 (6): 1317–1326. arXiv: 0807.0268 . Bibcode:2008PASJ...60.1317S. doi:10.1093/pasj/60.6.1317.


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