HD 80606 b

HD 80606 b
Computer simulation of weather systems on HD 80606 b, to scale with Jupiter
Discovery[1]
Discovered byGeneva Extrasolar Planet Search
Discovery siteHaute-Provence Observatory
Discovery date4 April 2001[2]
Radial velocity
Orbital characteristics[3]
Apastron0.8821 AU (131,960,000 km)
Periastron0.0309 AU (4,620,000 km)
0.4565 ± 0.0053 AU (68,290,000 ± 790,000 km)
Eccentricity0.93226+0.00064
−0.00069
111.43670±0.00040 d
8.8 km/s – 47.3 km/s[notes 1]
Inclination89.232°±0.029°
2,454,424.857 ± 0.05[4]
301.03°+0.20°
−0.19°
Semi-amplitude474.9+2.5
−2.7 m/s
StarHD 80606
Physical characteristics[3]
1.003±0.023 RJ
Mass4.116+0.097
−0.100 MJ
Mean density
5.06+0.38
−0.35 g/cm3
9.6 g
93+85
−35 h[5]
Temperature<500 - 1400 K[5]

HD 80606 b (also Struve 1341 Bb or HIP 45982 b) is an eccentric hot Jupiter 217 light-years from the Sun in the constellation of Ursa Major. HD 80606 b was discovered orbiting the star HD 80606 in April 2001 by a team led by Michel Mayor and Didier Queloz.[2] With a mass 4 times that of Jupiter, it is a gas giant. Because the planet transits the host star its radius can be determined using the transit method, and was found to be about the same as Jupiter's. Its density is slightly less than Earth's.[6] It has an extremely eccentric orbit like a comet, with its orbit taking it very close to its star and then back out very far away from it every 111 days.[7]

  1. ^ Cite error: The named reference Naef2001 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference eso0114 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Bonomo2017 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference moutou2009 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference deWit2016 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference fossey2009 was invoked but never defined (see the help page).
  7. ^ "Investigating the Mystery of Migrating 'Hot Jupiters'". nasa.gov. Archived from the original on 24 March 2023.


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