HD 168443 b

HD 168443 b
Odkrywca

R. Paul Butler, Geoffrey Marcy

Data odkrycia

1998

Charakterystyka orbity (J2000)
Półoś wielka

0,2931 ± 0,00181 au[1]

Mimośród

0,52883 ± 0,00103[1]

Okres orbitalny

58,11247 ± 0,0003[1]

Argument perycentrum

172,923 ± 0,139°[1]

Charakterystyka fizyczna
Masa minimalna (M·sin i)

7,659 ± 0,0975[1] MJ

HD 168443 b – gazowy olbrzym około ośmiokrotnie cięższy od Jowisza. Krąży bliżej gwiazdy HD 168443 niż Merkury wokół Słońca, więc temperatura na jego powierzchni musi być bardzo wysoka. Z jego budowy oraz temperatury można wnioskować, że chmury nie mogą utworzyć się w jego grubej atmosferze, więc tarcza planety jest zapewne czysto niebieska, ze względu na rozpraszane światło. Duża ekscentryczność jego orbity może sprawiać, że w pobliżu apocentrum (~0,45 j.a.) chmury będą się przejściowo pojawiały.

Zobacz też

Przypisy

  1. ↑ a b c d e Genady Pilyavsky et al.. A Search for the Transit of HD 168443b: Improved Orbital Parameters and Photometry. „The Astrophysical Journal”. 743 (2), s. 162, 2011-12-20. DOI: 10.1088/0004-637X/743/2/162. (ang.). 

Linki zewnętrzne

  • HD 168443 b w serwisie The Extrasolar Planets Encyclopaedia (ang.)

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