Exoplanet

HAT-P-4 b

Orbiting HAT-P-4

Overview

HAT-P-4 b is an exoplanet orbiting the star HAT-P-4, discovered in 2007 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

14.28

Earth radii

015 R⊕

Mass

213.25

Earth masses

0500 M⊕

Orbital Period

3.1

days

0.1d10,000d

Distance

320.5

parsecs

Nearby10,000 pc

Equilibrium Temp

1686

K

150 K3,500 K

Radius (Earth radii)

14.28

Mass (Earth masses)

213.25

Measured

Equilibrium Temperature

1686 K

Orbital Period

3.06 days

Distance from Earth

320.5 pc (~1045 ly)

Spectral Type

Unknown

Temperature

5860 K

Mass (Solar)

1.25 M☉

Radius (Solar)

1.60 R☉

Luminosity

0.43 log L☉

Planets in System

1

Stars in System

2

Coordinates (RA, Dec)

229.9912°, 36.2295°

Discovery Method

Transit

Discovery Year

2007

Data Sources
NASA Exoplanet Archive

Source ID: HAT-P-4 b

System Context

HAT-P-4 b orbits HAT-P-4 and was reported in 2007 and was detected with the Transit method.

Published measurements list a radius of 14.28 Earth radii, a mass of 213.26 Earth masses, an orbital period of 3.06 days, and an equilibrium temperature near 1,686 K.

Catalog data places the system at about 320.5 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-4