Exoplanet

HIP 18606 b

Orbiting HIP 18606

Overview

HIP 18606 b is an exoplanet orbiting the star HIP 18606, discovered in 2025 using the Radial Velocity method.

Key Measurements

Minimum Mass (M sin i)

244.73

Earth masses

0500 M⊕

Orbital Period

674.9

days

0.1d10,000d

Distance

47.0

parsecs

Nearby10,000 pc

Radius (Earth radii)

Unknown

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

244.73

Radial-velocity minimum

Equilibrium Temperature

Unknown

Parameter source: Jenkins et al. 2025

Orbital Period

674.940+6.430−6.280days

Semi-Major Axis

1.6100+0.0500−0.0500au

M sin(i) (Earth masses)

244.73+22.25−22.25

M sin(i) (Jupiter masses)

0.7700+0.0700−0.0700

Argument of Periastron

90.0deg

Radial Velocity Semi-Amplitude

16.07+1.12−1.18m/s

Distance from Earth

47.0 pc (~153 ly)

Spectral Type

K0/1 III

Temperature

4860 K

Mass (Solar)

1.21 M☉

Radius (Solar)

4.83 R☉

Luminosity

1.06 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

59.7181°, -5.4707°

Discovery Method

Radial Velocity

Discovery Year

2025

Data Sources
NASA Exoplanet Archive

Source ID: HIP 18606 b

System Context

HIP 18606 b orbits HIP 18606 and was reported in 2025 and was detected with the Radial Velocity method.

Published measurements list a minimum mass of 244.73 Earth masses (M sin i) and an orbital period of 674.94 days.

Catalog data places the system at about 47 parsecs from Earth, a host star classified as K0/1 III, and 1 known planet in the system.

Host star

Explore the stellar record for this system to compare temperature, spectral type, and known planets.

Open HIP 18606