Exoplanet

TOI-269 b

Orbiting TOI-269

Overview

TOI-269 b is an exoplanet orbiting the star TOI-269, discovered in 2021 using the Transit method. It is a Mini-Neptune world.

Key Measurements

Radius

2.77

Earth radii

015 R⊕

Mass

8.80

Earth masses

0500 M⊕

Orbital Period

3.7

days

0.1d10,000d

Distance

57.0

parsecs

Nearby10,000 pc

Equilibrium Temp

531

K

150 K3,500 K

Radius (Earth radii)

2.77

Mass (Earth masses)

8.80

Measured

Equilibrium Temperature

531 K

Parameter source: Cointepas et al. 2021

Orbital Period

3.698+0.000−0.000days

Semi-Major Axis

0.0345+0.0015−0.0015au

Planet Mass (Earth masses)

8.80+1.40−1.40

Planet Mass (Jupiter masses)

0.0277+0.0044−0.0044

Eccentricity

0.4250+0.0820−0.0860

Argument of Periastron

74.0+15.0−15.0deg

Radial Velocity Semi-Amplitude

7.60+1.20−1.20m/s

Distance from Earth

57.0 pc (~186 ly)

Spectral Type

M2 V

Temperature

3514 K

Mass (Solar)

0.39 M☉

Radius (Solar)

0.40 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

75.8463°, -54.1777°

Discovery Method

Transit

Discovery Year

2021

Data Sources
NASA Exoplanet Archive

Source ID: TOI-269 b

System Context

TOI-269 b orbits TOI-269 and was reported in 2021 and was detected with the Transit method.

Published measurements list a radius of 2.77 Earth radii, a mass of 8.8 Earth masses, an orbital period of 3.7 days, and an equilibrium temperature near 531 K.

Catalog data places the system at about 57 parsecs from Earth, a host star classified as M2 V, 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 TOI-269
TOI-269 b