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Super-Earth

HD 213885 b

Orbiting HD 213885 | 48.1 parsecs away

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HD 213885 b is a Super-Earth exoplanet (a planet larger than Earth but smaller than Neptune), about 1.7 times the radius of Earth. Its scorching equilibrium temperature of 2128 K (1855°C) makes it far too hot for liquid water. Despite its name, Super-Earths are not necessarily habitable; the term refers only to size. The planet completes one orbit around its star every 24 hours. It was discovered in 2019 using the transit method. It orbits the G-type star HD 213885, located approximately 48 parsecs (157 light-years) from Earth.

2019

Discovered

8.8

Earth Masses

1.75

Earth Radii

2128

Temperature (K)

Discovery Information

Discovery MethodTransit
Discovery Year2,019
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)

Orbital Properties

Orbital Period1.008 days
Semi-Major Axis0.0201 AU
Eccentricity0
Inclination80.09 deg

Physical Properties

Mass (Jupiter)0.0278 MJ
Mass (Earth)8.83 M⊕
Radius (Jupiter)0.1557 RJ
Radius (Earth)1.745 R⊕
Density9.15 g/cm3
Eq. Temperature2,128 K
Planetary Extremes

Where HD 213885 b sits on the spectrum of all known exoplanets.

Mass8.8 M⊕
FeatherweightColossus
Radius1.75 R⊕
TinyEnormous
Temperature2128 K
FrozenInferno
Year Length1.0 days
LightningGlacial
Density9.15 g/cm³
FluffyIron-dense
Star Distance0.020 AU
ScorchedFrozen exile
Star System View
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Size Comparison
EarthHD 213885 bJupiter

1.75x Earth's radius (0.16x Jupiter)

Orbit Comparison
EarthHD 213885 b
Earth: 365.25 days (1 AU)HD 213885 b: 24 hours (0.020 AU)
Host Star: HD 213885

Spectral TypeG
Effective Temperature5,978 K
Mass1.068 M☉
Radius1.1011 R☉
Size vs Sun1.10x larger
Luminosity1.376 L☉
Luminosity vs Sun1.376x brighter
Metallicity [Fe/H]-0.04
Distance (pc)48.0883 pc
Distance (ly)156.8 light-years

What If You Lived Here?

203.0 kg

Your weight (from 70 kg)

2.90g

Crushing

Standing upright is a struggle. Your body feels like lead.

24 hours

Year length

Yellow sunrise

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