Exoplanet

K2-33 b

Orbiting K2-33

Overview

K2-33 b is an exoplanet orbiting the star K2-33, discovered in 2016 using the Transit method. It is a Neptune-sized world.

Key Measurements

Radius

5.04

Earth radii

015 R⊕

Mass

1175.97

Earth masses

0500 M⊕

Orbital Period

5.4

days

0.1d10,000d

Distance

139.3

parsecs

Nearby10,000 pc

Radius (Earth radii)

5.04

Mass (Earth masses)

1175.97

Measured

Equilibrium Temperature

Unknown

Parameter source: Mann et al. 2016

Orbital Period

5.425+0.000−0.000days

Planet Mass (Earth masses)

1175.97

Planet Mass (Jupiter masses)

3.7000

Eccentricity

0.0000

Argument of Periastron

0.0deg

Distance from Earth

139.3 pc (~454 ly)

Spectral Type

M3.3

Temperature

3540 K

Mass (Solar)

0.56 M☉

Radius (Solar)

1.05 R☉

Luminosity

-0.82 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

242.5614°, -19.3194°

Discovery Method

Transit

Discovery Year

2016

Data Sources
NASA Exoplanet Archive

Source ID: K2-33 b

System Context

K2-33 b orbits K2-33 and was reported in 2016 and was detected with the Transit method.

Published measurements list a radius of 5.04 Earth radii, a mass of 1,175.97 Earth masses, and an orbital period of 5.42 days.

Catalog data places the system at about 139.3 parsecs from Earth, a host star classified as M3.3, 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 K2-33