» Extrasolar Planet Guide » mu Arae » mu Arae b


Water Cloud Jovian, Eccentric
Object Type: Water Cloud Jovian, Eccentric
Parent Star: mu Arae (G3 IV-V)
Discovery Status: Confirmed
Habitability: Planet at Earthlike Temperatures at Mean Orbital Distance
Orbit of mu Arae b Current Planet
Habitability Zone Habitability Zone
Mass ( M sin i ): 1.67 ± 0.1 Jupiters
Periastron Distance: 1.03 AU
Mean Distance: 1.5 ± 0.02 AU
Apastron Distance: 1.96 AU
Orbital Period: 654.5 Days
Eccentricity: 0.31
Argument of Perihelion (omega):
294 °
Radial Velocity of Star: 41 m/s
System Age: > 2000 Myr
Planet Appearance:
White water ice clouds
Estimated Radius:
1.045 Jupiters 1
Estimated Periastron Temp: 289 Kelvin
Estimated Mean Temp: 240 Kelvin
Estimated Apastron Temp: 209 Kelvin
Temp from
Internal Heating :

157.254 Kelvins 2
Max Angular Star Size: 0.717°
Mean Angular Star Size: 0.492°
Min Angular Star Size: 0.377°
Gravitational Influence
(Hill Sphere):
0.118 AU / 17710000 km
Max Stable Prograde Moon Orbit: 0.042 AU / 6370000 km
Max Moon Mass: > 10 Earths 3
Tidally locked if older than: > 20 Gyr 4
Estimated Bond Albedo: ~ 0.79 5
Notes:
     1 from planet formation models of Burrows et al
     2 from planet formation models of Burrows et al
     3 based on periastron due to high eccentricity
     4 orbit may be too eccentric for 1:1 tidal lock
     5 from Sudarsky et al. 2000
Year Discovered: 13 Jun 2002
Detection Method: Doppler Spectroscopy
Discovered By: TINNEY C., BUTLER P., MARCY G., JONES H., PENNY A., VOGT S., APPS K. & HENRY C.

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