Exoplanet

HATS-18 b

Orbiting HATS-18

Overview

HATS-18 b is an exoplanet orbiting the star HATS-18, discovered in 2016 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

14.90

Earth radii

015 R⊕

Mass

629.14

Earth masses

0500 M⊕

Orbital Period

0.8

days

0.1d10,000d

Distance

624.4

parsecs

Nearby10,000 pc

Equilibrium Temp

2069

K

150 K3,500 K

Radius (Earth radii)

14.90

Mass (Earth masses)

629.14

Measured

Equilibrium Temperature

2069 K

Parameter source: Chakrabarty & Sengupta 2019

Orbital Period

0.838+0.000−0.000days

Semi-Major Axis

0.0174+0.0010−0.0010au

Planet Mass (Earth masses)

629.14+24.16−24.16

Planet Mass (Jupiter masses)

1.9795+0.0760−0.0760

Radial Velocity Semi-Amplitude

415.20+10.00−10.00m/s

Distance from Earth

624.4 pc (~2036 ly)

Spectral Type

Unknown

Temperature

5600 K

Mass (Solar)

1.04 M☉

Radius (Solar)

1.02 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

173.9574°, -29.1561°

Discovery Method

Transit

Discovery Year

2016

Data Sources
NASA Exoplanet Archive

Source ID: HATS-18 b

System Context

HATS-18 b orbits HATS-18 and was reported in 2016 and was detected with the Transit method.

Published measurements list a radius of 14.9 Earth radii, a mass of 629.14 Earth masses, an orbital period of 0.84 days, and an equilibrium temperature near 2,069 K.

Catalog data places the system at about 624.4 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 HATS-18