» Extrasolar Planet Guide » Companions of Normal Stars » HD 208487 » HD 208487 b


Clarified Jovian, Eccentric
Object Type: Clarified Jovian, Eccentric
Parent Star: HD 208487 (G2 V)
Discovery Status: Confirmed
Orbit of HD 208487 b Current Planet
Habitability Zone Habitability Zone
Mass ( M sin i ): 0.45 ± 0.05 Jupiters
Periastron Distance: 0.33 AU
Mean Distance: 0.49 ± 0.04 AU
Apastron Distance: 0.64 AU
Orbital Period: 123 ± 1 Days
Eccentricity: 0.32 ± 0.1
Argument of Perihelion (omega):
126 °
Planet Appearance:
Blue and cloudless
Estimated Radius:
0.71 Jupiters 1
Estimated Periastron Temp: 502 Kelvin
Estimated Mean Temp: 414 Kelvin
Estimated Apastron Temp: 360 Kelvin
Temp from
Internal Heating :

60.7024 Kelvins 2
Max Angular Star Size: 2.111°
Mean Angular Star Size: 1.422°
Min Angular Star Size: 1.088°
Gravitational Influence
(Hill Sphere):
0.023 AU / 3510000 km
Max Stable Prograde Moon Orbit: 0.008 AU / 1260000 km
Max Moon Mass: 0.2534 Earths 3,4
2.3583 x Mars
Tidally locked if older than: > 20 Gyr 5
Estimated Bond Albedo: ~ 0.1 6
Notes:
     1 from planet formation models of Burrows et al
     2 from planet formation models of Burrows et al
     3 assuming age of 5 Gyr
     4 based on periastron due to high eccentricity
     5 orbit may be too eccentric for 1:1 tidal lock
     6 from Sudarsky et al. 2000
Year Discovered: 2004
Detection Method: Doppler Spectroscopy
Discovered By: TINNEY C., et al.

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