HIP 111909 b
Orbiting HIP 111909
HIP 111909 b is an exoplanet orbiting the star HIP 111909, discovered in 2025 using the Radial Velocity method.
Minimum Mass (M sin i)
384.57
Earth masses
Orbital Period
487.1
days
Distance
88.1
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
384.57
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Jenkins et al. 2025
Orbital Period
487.080+3.810−3.630days
Semi-Major Axis
1.3200+0.0400−0.0500au
M sin(i) (Earth masses)
384.57+31.78−31.78
M sin(i) (Jupiter masses)
1.2100+0.1000−0.1000
Argument of Periastron
90.0deg
Radial Velocity Semi-Amplitude
25.57+2.03−1.52m/s
Distance from Earth
88.1 pc (~287 ly)
Spectral Type
K1 III
Temperature
4891 K
Mass (Solar)
1.28 M☉
Radius (Solar)
4.53 R☉
Luminosity
1.02 log L☉
Planets in System
2
Stars in System
1
Coordinates (RA, Dec)
340.0304°, -49.5985°
Discovery Method
Radial Velocity
Discovery Year
2025
Source ID: HIP 111909 b
HIP 111909 b orbits HIP 111909 and was reported in 2025 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 384.57 Earth masses (M sin i) and an orbital period of 487.08 days.
Catalog data places the system at about 88.1 parsecs from Earth, a host star classified as K1 III, 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 HIP 111909More planets in this system