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
Publication
Status
—
Update
2024-11-30
Mass
Mass*sin(i)
—
Semi-Major Axis
Orbital Period
Eccentricity
Angular distance
1.725888 arcsec
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)