Planet HR 8799 b

Detailed information about planet HR 8799 b and its parameters.

Planet

Name
HR 8799 b
Planet Status
Confirmed
Discovered in
2008
Update
2024-11-30
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Detection Method
Imaging
Mass Meas. Method
Radius Meas. Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference
CH4
Measurements Detected Controversial (see Petit dit de la Roche et al. 2018) 2015 - BARMAN T.
CO
Measurements Detected 2015 - BARMAN T.
H2O
Measurements Detected 2015 - BARMAN T.

30 Nov 2024:
Video of the HR 8799 planets trajectories   (Credit Wikimedia)

No link

Star

Presence of a cold and a warm disk (Su et al. 2009)