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HD 154857 b

From Wikipedia, the free encyclopedia

HD 154857 b
Discovery
Discovered byMcCarthy et al.
AAT
 Australia
Discovery siteAAPS
Discovery date2004
Radial velocity
Orbital characteristics
Apastron1.8 AU (270,000,000 km)
Periastron0.64 AU (96,000,000 km)
1.2 ± 0.2 AU (180,000,000 ± 30,000,000 km)
Eccentricity0.47±0.02
409±1 d
1.12 y
2450346±5
59±4
Semi-amplitude50.4±1
StarHD 154857
Physical characteristics
Mass>1.8±0.4 MJ
(>570±100 ME)

HD 154857 b is an extrasolar planet approximately 224 light years away in the constellation of Ara. This is a gas giant mass that orbits the star in an eccentric orbit. This planet was detected by using Anglo-Australian Telescope (AAT) UCLE spectrometer.[1][2]

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Transcription

References

  1. ^ McCarthy, Chris; et al. (2004). "Multiple Companions to HD 154857 and HD 160691". The Astrophysical Journal. 617 (1): 575–579. arXiv:astro-ph/0409335. Bibcode:2004ApJ...617..575M. doi:10.1086/425214. S2CID 119446133.
  2. ^ O'Toole, Simon J.; et al. (2007). "New Planets around Three G Dwarfs". The Astrophysical Journal. 660 (2): 1636–1641. arXiv:astro-ph/0702213. Bibcode:2007ApJ...660.1636O. doi:10.1086/513563. S2CID 118958847.

External links



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This page was last edited on 22 December 2023, at 03:07
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