Exoplanet

GJ 3090 c

Orbiting GJ 3090

Overview

GJ 3090 c is an exoplanet orbiting the star GJ 3090, discovered in 2026 using the Radial Velocity method.

Key Measurements

Minimum Mass (M sin i)

10.00

Earth masses

0500 M⊕

Orbital Period

15.9

days

0.1d10,000d

Distance

22.5

parsecs

Nearby10,000 pc

Equilibrium Temp

407

K

150 K3,500 K

What these measurements mean

These comparisons use the reported catalog values. They are interpretations and calculations, not additional observations.

A year on this world
A 365.25-day Earth year spans about 22.9 of these orbits. This comparison uses the reported orbital period. It does not measure the planet's rotation or the length of its day.
What the mass can tell you
M sin i is a lower bound on the true mass because the viewing angle affects the radial-velocity measurement. Do not treat it as an exact mass or use it to claim a measured density.
Temperature has limits
Equilibrium temperature describes a model of absorbed and emitted energy, not a measured surface temperature. Atmosphere and reflectivity affect the interpretation. This value alone cannot establish liquid water, a habitable surface, or life.
Work through an exoplanet comparisonArchive measurement definitions

Radius (Earth radii)

Unknown

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

10.00

Radial-velocity minimum

Equilibrium Temperature

407 K

Parameter source: Lamontagne et al. 2026

Orbital Period

15.941+0.006−0.006days

Semi-Major Axis

0.0997+0.0008−0.0008au

M sin(i) (Earth masses)

10.00+1.30−1.30

M sin(i) (Jupiter masses)

0.0315+0.0041−0.0041

Eccentricity

0.0000

Argument of Periastron

90.0deg

Radial Velocity Semi-Amplitude

3.95+0.51−0.51m/s

Distance from Earth

22.5 pc (~73 ly)

Spectral Type

M2 V

Temperature

3707 K

Mass (Solar)

0.52 M☉

Radius (Solar)

0.52 R☉

Luminosity

-1.34 log L☉

Planets in System

2

Stars in System

1

Coordinates (RA, Dec)

20.4384°, -46.7147°

Discovery Method

Radial Velocity

Discovery Year

2026

Data Sources
NASA Exoplanet Archive

Source ID: GJ 3090 c

System Context

GJ 3090 c orbits GJ 3090 and was reported in 2026 and was detected with the Radial Velocity method.

Published measurements list a minimum mass of 10 Earth masses (M sin i), an orbital period of 15.94 days, and an equilibrium temperature near 407 K.

Catalog data places the system at about 22.5 parsecs from Earth, a host star classified as M2 V, 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 GJ 3090

More planets in this system

GJ 3090 b