» Extrasolar Planet Guide » Systems with Disproven or Doubtful Planets » Sol » The 10th Planet


Doubtful Companion
Object Type: Methane Cloud Jovian
Parent Star: Sol (G2 V)
Discovery Status: Doubtful
Orbit of The 10th Planet Current Planet
Habitability Zone Habitability Zone
Mass : 3 Jupiters
Mean Distance: 25000 AU
Orbital Period: 5 Million Years
System Age: 4600 Myr
Planet Appearance:
Blue with methane clouds and hazes
Estimated Radius:
1.04 Jupiters 1
Estimated Mean Temp: 1 Kelvin
Temp from
Internal Heating :

159.146 Kelvins 2
Mean Angular Star Size:
Gravitational Influence
(Hill Sphere):
2461.612 AU / 368252450000 km
Max Stable Prograde Moon Orbit: 886.18 AU / 132570880000 km
Max Moon Mass: > 10 Earths
Tidally locked if older than: > 20 Gyr
Notes:
     1 from planet formation models of Burrows et al
     2 from planet formation models of Burrows et al
Year Discovered: 1999
Detection Method: Inferred from Cometary Orbit Perturbations
Discovered By: Independantly by Murray and Matese



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