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HD 20868 b

From Wikipedia, the free encyclopedia

HD 20868 b / Baiduri
Discovery
Discovered byMoutou et al.[1]
Discovery siteLa Silla Observatory
Discovery dateOctober 26, 2008
Doppler spectroscopy
(HARPS)
Orbital characteristics
0.947 ± 0.012 AU (141,700,000 ± 1,800,000 km)
Eccentricity0.75 ± 0.002
380.85 ± 0.09 d
1.0427 ± 0.0002 y
27.1
2,454,451.52 ± 0.1
356.2 ± 0.4
StarHD 20868

HD 20868 b is an extrasolar planet located approximately 156 light-years away in the constellation of Fornax, orbiting the 10th magnitude K-type subgiant star HD 20868. This planet has a minimum mass of 1.99 times more than Jupiter and orbits at a distance of 0.947 AU. This planet takes 380.85 days or 12.5 months to revolve around the star with an eccentricity of 0.75, one of the most eccentric of any known extrasolar planets. At periastron, the distance is 0.237 AU and at apastron, the distance is 1.66 AU.

The planet HD 20868 b is named Baiduri. The name was selected in the NameExoWorlds campaign by Malaysia, during the 100th anniversary of the IAU. Baiduri means opal in Malay language.[2][3]

This planet was discovered on October 26, 2008 by Moutou et al. using the HARPS spectrograph on ESO’s 3.6 meter telescope installed at La Silla Observatory in Atacama desert, Chile.[1]

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Transcription

See also

References

  1. ^ a b Moutou, C.; et al. (2009). "The HARPS search for southern extra-solar planets XVII. Six long-period giant planets around BD -17 0063, HD 20868, HD 73267, HD 131664, HD 145377, HD 153950". Astronomy and Astrophysics. 496 (2): 513–519. arXiv:0810.4662. Bibcode:2009A&A...496..513M. doi:10.1051/0004-6361:200810941. S2CID 116707055.
  2. ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
  3. ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.

External links


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This page was last edited on 24 August 2023, at 12:23
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