Exoplanet

TOI-329 b

Orbiting TOI-329

Overview

TOI-329 b is an exoplanet orbiting the star TOI-329, discovered in 2024 using the Transit method. It is a Neptune-sized world.

Key Measurements

Radius

4.94

Earth radii

015 R⊕

Mass

40.40

Earth masses

0500 M⊕

Orbital Period

5.7

days

0.1d10,000d

Distance

284.4

parsecs

Nearby10,000 pc

Equilibrium Temp

1213

K

150 K3,500 K

Radius (Earth radii)

4.94

Mass (Earth masses)

40.40

Measured

Equilibrium Temperature

1213 K

Parameter source: Polanski et al. 2024

Orbital Period

5.704+0.000−0.000days

Semi-Major Axis

0.0638+0.0012−0.0013au

Planet Mass (Earth masses)

40.40+3.80−3.70

Planet Mass (Jupiter masses)

0.1271+0.0120−0.0116

Eccentricity

0.3900+0.0330−0.0330

Argument of Periastron

170.0+170.0−170.0deg

Radial Velocity Semi-Amplitude

15.10+1.30−1.30m/s

Distance from Earth

284.4 pc (~928 ly)

Spectral Type

Unknown

Temperature

5614 K

Mass (Solar)

1.07 M☉

Radius (Solar)

1.53 R☉

Luminosity

0.33 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

351.3211°, -15.6346°

Discovery Method

Transit

Discovery Year

2024

Data Sources
NASA Exoplanet Archive

Source ID: TOI-329 b

System Context

TOI-329 b orbits TOI-329 and was reported in 2024 and was detected with the Transit method.

Published measurements list a radius of 4.94 Earth radii, a mass of 40.4 Earth masses, an orbital period of 5.7 days, and an equilibrium temperature near 1,213 K.

Catalog data places the system at about 284.4 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-329
TOI-329 b