Exoplanet

TOI-1898 b

Orbiting TOI-1898

Overview

TOI-1898 b is an exoplanet orbiting the star TOI-1898, discovered in 2024 using the Transit method. It is a Neptune-sized world.

Key Measurements

Radius

9.40

Earth radii

015 R⊕

Mass

129.00

Earth masses

0500 M⊕

Orbital Period

45.5

days

0.1d10,000d

Distance

79.7

parsecs

Nearby10,000 pc

Equilibrium Temp

675

K

150 K3,500 K

Radius (Earth radii)

9.40

Mass (Earth masses)

129.00

Measured

Equilibrium Temperature

675 K

Parameter source: Polanski et al. 2024

Orbital Period

45.522+0.000−0.000days

Semi-Major Axis

0.2690+0.0050−0.0050au

Planet Mass (Earth masses)

129.00+7.00−8.00

Planet Mass (Jupiter masses)

0.4059+0.0220−0.0252

Eccentricity

0.4850+0.0390−0.0390

Argument of Periastron

71.0+5.0−5.0deg

Radial Velocity Semi-Amplitude

22.90+1.10−1.10m/s

Distance from Earth

79.7 pc (~260 ly)

Spectral Type

Unknown

Temperature

6241 K

Mass (Solar)

1.25 M☉

Radius (Solar)

1.61 R☉

Luminosity

0.55 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

144.5553°, 23.5467°

Discovery Method

Transit

Discovery Year

2024

Data Sources
NASA Exoplanet Archive

Source ID: TOI-1898 b

System Context

TOI-1898 b orbits TOI-1898 and was reported in 2024 and was detected with the Transit method.

Published measurements list a radius of 9.4 Earth radii, a mass of 129 Earth masses, an orbital period of 45.52 days, and an equilibrium temperature near 675 K.

Catalog data places the system at about 79.7 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-1898
TOI-1898 b