Exoplanet

HD 202772 A b

Orbiting HD 202772 A

Overview

HD 202772 A b is an exoplanet orbiting the star HD 202772 A, discovered in 2019 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

18.24

Earth radii

015 R⊕

Mass

323.55

Earth masses

0500 M⊕

Orbital Period

3.3

days

0.1d10,000d

Distance

161.5

parsecs

Nearby10,000 pc

Equilibrium Temp

2181

K

150 K3,500 K

Radius (Earth radii)

18.24

Mass (Earth masses)

323.55

Measured

Equilibrium Temperature

2181 K

Parameter source: Jofré et al. 2025

Orbital Period

3.309+0.000−0.000days

Semi-Major Axis

0.0521+0.0005−0.0006au

Planet Mass (Earth masses)

323.55+20.98−20.02

Planet Mass (Jupiter masses)

1.0180+0.0660−0.0630

Eccentricity

0.0300+0.0240−0.0190

Epoch of Periastron

2458325.46+0.41−0.37days(BJD-TDB)

Argument of Periastron

99.0+46.0−43.0deg

Radial Velocity Semi-Amplitude

96.50+6.00−5.70m/s

Distance from Earth

161.5 pc (~527 ly)

Spectral Type

Unknown

Temperature

6442 K

Mass (Solar)

1.72 M☉

Radius (Solar)

2.55 R☉

Luminosity

1.01 log L☉

Planets in System

1

Stars in System

2

Coordinates (RA, Dec)

319.6996°, -26.6164°

Discovery Method

Transit

Discovery Year

2019

Data Sources
NASA Exoplanet Archive

Source ID: HD 202772 A b

System Context

HD 202772 A b orbits HD 202772 A and was reported in 2019 and was detected with the Transit method.

Published measurements list a radius of 18.24 Earth radii, a mass of 323.55 Earth masses, an orbital period of 3.31 days, and an equilibrium temperature near 2,181 K.

Catalog data places the system at about 161.5 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 HD 202772 A
HD 202772 A b