Exoplanet

TOI-1259 A b

Orbiting TOI-1259 A

Overview

TOI-1259 A b is an exoplanet orbiting the star TOI-1259 A, discovered in 2021 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

11.60

Earth radii

015 R⊕

Mass

141.00

Earth masses

0500 M⊕

Orbital Period

3.5

days

0.1d10,000d

Distance

118.1

parsecs

Nearby10,000 pc

Radius (Earth radii)

11.60

Mass (Earth masses)

141.00

Measured

Equilibrium Temperature

Unknown

Parameter source: Veldhuis et al. 2026

Orbital Period

3.478+0.000−0.000days

Semi-Major Axis

0.0408+0.0009−0.0009au

Planet Mass (Earth masses)

141.00+13.00−13.00

Planet Mass (Jupiter masses)

0.4436+0.0409−0.0409

Eccentricity

0.0000

Radial Velocity Semi-Amplitude

72.00+6.00−6.00m/s

Distance from Earth

118.1 pc (~385 ly)

Spectral Type

Unknown

Temperature

Unknown

Mass (Solar)

0.75 M☉

Radius (Solar)

0.71 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

2

Coordinates (RA, Dec)

282.1002°, 79.2565°

Discovery Method

Transit

Discovery Year

2021

Data Sources
NASA Exoplanet Archive

Source ID: TOI-1259 A b

System Context

TOI-1259 A b orbits TOI-1259 A and was reported in 2021 and was detected with the Transit method.

Published measurements list a radius of 11.6 Earth radii, a mass of 141 Earth masses, and an orbital period of 3.48 days.

Catalog data places the system at about 118.1 parsecs from Earth 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-1259 A