Exoplanet

HAT-P-11 b

Orbiting HAT-P-11

Overview

HAT-P-11 b is an exoplanet orbiting the star HAT-P-11, discovered in 2010 using the Transit method.

Key Measurements

Minimum Mass (M sin i)

23.52

Earth masses

0500 M⊕

Orbital Period

4.9

days

0.1d10,000d

Distance

37.8

parsecs

Nearby10,000 pc

Radius (Earth radii)

Unknown

Minimum Mass, M sin(i) (Earth masses)

23.52

Radial-velocity minimum

Equilibrium Temperature

Unknown

Parameter source: An et al. 2025

Orbital Period

4.888+0.0000.000days

Semi-Major Axis

0.0526+0.00060.0006au

M sin(i) (Earth masses)

23.52+1.271.27

M sin(i) (Jupiter masses)

0.0740+0.00400.0040

Eccentricity

0.2510+0.04500.0470

Argument of Periastron

28.0+11.011.0deg

Distance from Earth

37.8 pc (~123 ly)

Spectral Type

Unknown

Temperature

Unknown

Mass (Solar)

0.81 M☉

Radius (Solar)

Unknown

Luminosity

Unknown

Planets in System

2

Stars in System

1

Coordinates (RA, Dec)

297.7102°, 48.0819°

Discovery Method

Transit

Discovery Year

2010

Data Sources

Source ID: HAT-P-11 b

System Context

HAT-P-11 b orbits HAT-P-11 and was reported in 2010 and was detected with the Transit method.

Published measurements list a minimum mass of 23.52 Earth masses (M sin i) and an orbital period of 4.89 days.

Catalog data places the system at about 37.8 parsecs from Earth and 2 known planets in the system.

Host star

Explore the stellar record for this system to compare temperature, spectral type, and known planets.

Open HAT-P-11

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