Planet HR 8799 h

Detailed information about planet HR 8799 h and its parameters.

Planet

Name
HR 8799 h
Planet Status
Candidate
Discovered in
2026
Publication
Status
—
Update
2026-09-21
Mass
Mass*sin(i)
—
Semi-Major Axis
Orbital Period
—
Eccentricity
0.11 ( +0.18 -0.08 )
Angular distance
—
ω
Tperi
—
Radius
—
Inclination
Detection Method
Imaging
Mass Meas. Method
Theoretical
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

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Star

Name
HR 8799
Distance
Spectral type
A5V
Apparent magnitude V
5.96
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
Age
Effective temperature
Radius
Metallicity [Fe/H]
Detected Disc
Magnetic Field
—
RA2000
23:07:29.0
Dec2000
+21:08:03.0
Alternate Names
HD 218396, V342 Peg

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