Planet HR 8799 d

Detailed information about planet HR 8799 d and its parameters.

Planet

Name
HR 8799 d
Planet Status
Confirmed
Discovered in
2008
Update
2024-11-30
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
80.2 deg
Tperi
Radius
Inclination
Detection Method
Imaging
Mass Meas. Method
Spectrum
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

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)