Exoplanet

HIP 111909 c

Orbiting HIP 111909

Overview

HIP 111909 c is an exoplanet orbiting the star HIP 111909, discovered in 2025 using the Radial Velocity method.

Key Measurements

Minimum Mass (M sin i)

257.44

Earth masses

0500 M⊕

Orbital Period

893.6

days

0.1d10,000d

Distance

88.1

parsecs

Nearby10,000 pc

Radius (Earth radii)

Unknown

Minimum Mass, M sin(i) (Earth masses)

257.44

Radial-velocity minimum

Equilibrium Temperature

Unknown

Parameter source: Jenkins et al. 2025

Orbital Period

893.630+14.890−16.030days

Semi-Major Axis

1.9700+0.0800−0.0300au

M sin(i) (Earth masses)

257.44+25.43−25.43

M sin(i) (Jupiter masses)

0.8100+0.0800−0.0800

Argument of Periastron

90.0deg

Radial Velocity Semi-Amplitude

13.86+1.25−1.14m/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

Data Sources
NASA Exoplanet Archive

Source ID: HIP 111909 c

System Context

HIP 111909 c orbits HIP 111909 and was reported in 2025 and was detected with the Radial Velocity method.

Published measurements list a minimum mass of 257.44 Earth masses (M sin i) and an orbital period of 893.63 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 111909

More planets in this system

HIP 111909 b