HR 8799 b
Orbiting HR 8799
HR 8799 b is an exoplanet orbiting the star HR 8799, discovered in 2008 using the Imaging method. It is a Jupiter-sized world.
Radius
13.00
Earth radii
Mass
2000.00
Earth masses
Orbital Period
170000.0
days
Distance
41.2
parsecs
Radius (Earth radii)
13.00
Mass (Earth masses)
2000.00
Measured
Equilibrium Temperature
Unknown
Parameter source: Marois et al. 2008
Orbital Period
170000.000days
Semi-Major Axis
68.0000au
Planet Mass (Earth masses)
2000.00+1000.00−600.00
Planet Mass (Jupiter masses)
7.0000+4.0000−2.0000
Distance from Earth
41.2 pc (~135 ly)
Spectral Type
A5 V
Temperature
Unknown
Mass (Solar)
1.50 M☉
Radius (Solar)
Unknown
Luminosity
0.69 log L☉
Planets in System
4
Stars in System
1
Coordinates (RA, Dec)
346.8701°, 21.1340°
Discovery Method
Imaging
Discovery Year
2008
Source ID: HR 8799 b
HR 8799 b orbits HR 8799 and was reported in 2008 and was detected with the Imaging method.
Published measurements list a radius of 13 Earth radii, a mass of 2,000 Earth masses, and an orbital period of 170,000 days.
Catalog data places the system at about 41.2 parsecs from Earth, a host star classified as A5 V, and 4 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HR 8799