HAT-P-11 c
Orbiting HAT-P-11
HAT-P-11 c is an exoplanet orbiting the star HAT-P-11, discovered in 2018 using the Radial Velocity method.
Mass
851.78
Earth masses
Orbital Period
3361.0
days
Distance
37.8
parsecs
Radius (Earth radii)
Unknown
Mass (Earth masses)
851.78
Measured
Equilibrium Temperature
Unknown
Parameter source: An et al. 2025
Orbital Period
3361.000+31.000−31.000days
Semi-Major Axis
4.1000+0.0600−0.0600au
Planet Mass (Earth masses)
851.78+130.31−130.31
Planet Mass (Jupiter masses)
2.6800+0.4100−0.4100
Eccentricity
0.6520+0.0170−0.0170
Argument of Periastron
142.1+2.5−2.5deg
Distance from Earth
37.8 pc (~123 ly)
Spectral Type
Unknown
Temperature
Unknown
Mass (Solar)
0.81 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
2
Stars in System
1
Coordinates (RA, Dec)
297.7102°, 48.0819°
Discovery Method
Radial Velocity
Discovery Year
2018
Source ID: HAT-P-11 c
HAT-P-11 c orbits HAT-P-11 and was reported in 2018 and was detected with the Radial Velocity method.
Published measurements list a mass of 851.78 Earth masses and an orbital period of 3,361 days.
Catalog data places the system at about 37.8 parsecs from Earth and 2 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HAT-P-11More planets in this system