Exoplanet

HAT-P-9 b

Orbiting HAT-P-9

Overview

HAT-P-9 b is an exoplanet orbiting the star HAT-P-9, discovered in 2008 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

15.61

Earth radii

015 R⊕

Mass

238.05

Earth masses

0500 M⊕

Orbital Period

3.9

days

0.1d10,000d

Distance

455.2

parsecs

Nearby10,000 pc

Equilibrium Temp

1540

K

150 K3,500 K

Radius (Earth radii)

15.61

Mass (Earth masses)

238.05

Measured

Equilibrium Temperature

1540 K

Orbital Period

3.92 days

Distance from Earth

455.2 pc (~1485 ly)

Spectral Type

Unknown

Temperature

6350 K

Mass (Solar)

1.28 M☉

Radius (Solar)

1.34 R☉

Luminosity

0.42 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

110.1685°, 37.1406°

Discovery Method

Transit

Discovery Year

2008

Data Sources

Source ID: HAT-P-9 b

System Context

HAT-P-9 b orbits HAT-P-9 and was reported in 2008 and was detected with the Transit method.

Published measurements list a radius of 15.61 Earth radii, a mass of 238.05 Earth masses, an orbital period of 3.92 days, and an equilibrium temperature near 1,540 K.

Catalog data places the system at about 455.2 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 HAT-P-9