Exoplanet

TOI-1298 b

Orbiting TOI-1298

Overview

TOI-1298 b is an exoplanet orbiting the star TOI-1298, discovered in 2021 using the Transit method. It is a Neptune-sized world.

Key Measurements

Radius

9.66

Earth radii

015 R⊕

Mass

99.00

Earth masses

0500 M⊕

Orbital Period

4.5

days

0.1d10,000d

Distance

319.0

parsecs

Nearby10,000 pc

Equilibrium Temp

1278

K

150 K3,500 K

Radius (Earth radii)

9.66

Mass (Earth masses)

99.00

Measured

Equilibrium Temperature

1278 K

Parameter source: Polanski et al. 2024

Orbital Period

4.537+0.000−0.000days

Semi-Major Axis

0.0570+0.0010−0.0010au

Planet Mass (Earth masses)

99.00+6.00−6.00

Planet Mass (Jupiter masses)

0.3115+0.0189−0.0189

Eccentricity

0.0000

Argument of Periastron

57.0+110.0−110.0deg

Radial Velocity Semi-Amplitude

33.60+1.60−1.60m/s

Distance from Earth

319.0 pc (~1041 ly)

Spectral Type

Unknown

Temperature

5752 K

Mass (Solar)

1.22 M☉

Radius (Solar)

1.45 R☉

Luminosity

0.32 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

241.3229°, 70.1900°

Discovery Method

Transit

Discovery Year

2021

Data Sources
NASA Exoplanet Archive

Source ID: TOI-1298 b

System Context

TOI-1298 b orbits TOI-1298 and was reported in 2021 and was detected with the Transit method.

Published measurements list a radius of 9.66 Earth radii, a mass of 99 Earth masses, an orbital period of 4.54 days, and an equilibrium temperature near 1,278 K.

Catalog data places the system at about 319 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-1298
TOI-1298 b