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HD 154857 b

April 14, 2024

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]

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)

References edit

  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 edit



 

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April 14, 2024
154857, extrasolar, planet, approximately, light, years, away, constellation, this, giant, mass, that, orbits, star, eccentric, orbit, this, planet, detected, using, anglo, australian, telescope, ucle, spectrometer, discoverydiscovered, bymccarthy, australiadi. 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 HD 154857 bDiscoveryDiscovered byMcCarthy et al AAT AustraliaDiscovery siteAAPSDiscovery date2004Detection methodRadial velocityOrbital characteristicsApastron1 8 AU 270 000 000 km Periastron0 64 AU 96 000 000 km Semi major axis1 2 0 2 AU 180 000 000 30 000 000 km Eccentricity0 47 0 02Orbital period sidereal 409 1 d1 12 yTime of periastron2450346 5Argument of periastron59 4Semi amplitude50 4 1StarHD 154857Physical characteristicsMass gt 1 8 0 4 MJ gt 570 100 ME References edit 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 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 edit HD 154857 b Extrasolar Planets Encyclopaedia Archived from the original on July 2 2007 Retrieved 2008 07 21 Simulation HD 154857 b news bbc co uk nbsp This extrasolar planet related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title HD 154857 b amp oldid 1191198230, wikipedia, wiki, book, books, library,

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