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CONFIRMED EXOPLANET · Rocky-size

EPIC 206215704 b

EPIC 206215704 b orbits the star EPIC 206215704, 358.4 light-years from Earth. It completes an orbit in 2.255 Earth days.

DISCOVERED 2019 · Transit

Get to know this world ↓
EPIC 206215704 b
ORBITAL VISUALISATION
Rocky-sizePlanet type

Size-based classification; composition may be uncertain.

1 × Earth’s radiusSize

Around 0% wider than Earth.

2.255 daysYear length

Time to complete one orbit.

358.4 light-yearsDistance

Its light travels for roughly 358 years to reach us.

2019Discovered

Transit

Overview

EPIC 206215704 b is one of the confirmed worlds in the NASA Exoplanet Archive. Recorded as discovered in 2019. The credited discovery facility is K2. Its Transit evidence gives us a way to study a planet that is usually too faint to see directly.

Its recorded radius is 1 times Earth's radius. Size is useful for comparison, but it cannot establish surface conditions by itself.

The planet

The archive lists a mass or minimum-mass value of 0.97 Earth masses (M-R relationship). Radius: 1 Earth radii.

Mass and radius constrain possible interiors; multiple compositions can fit a given set of measurements.

Orbit & year

A year here lasts 2.255 Earth days.

Host star

EPIC 206215704.

Effective temperature: 3,297 K.

Mass: 0.41 times the Sun’s mass.

Planetary system

1 confirmed planets are stored for this star.

EPIC 206215704 b · 2.255-day orbit

Discovery

Reported discovery year: 2019. Method: Transit. Facility: K2.

First stored in this atlas: 04/10/2026. This is an ingestion date, not a confirmation date.

How these methods work ↗

Potential habitability

The data here does not establish habitability, liquid water, or life. An appropriate atmosphere and many other conditions would be needed.

Understand the habitable zone ↗

What do we actually know?

Observed

The underlying light, motion or timing signal. Usually not a photograph of the planet.

Measured

Parameters derived from observations, with instrument and model uncertainty.

Calculated

Our light-year conversion and browsing class are calculated from archive values.

Estimated

Equilibrium temperature is an energy-balance estimate, not surface weather.

Inferred

Possible composition depends on models and may not be unique.

Unknown

Surface conditions and the presence of life are not established here.

Measured signals are interpreted through models. The archive’s composite table combines published values and may include calculated estimates. Values do not necessarily form one self-consistent solution.

Radius and mass can be estimated or inferred, orbital period comes from recurring observations, and size classification is calculated by this site. Atmospheric and surface conditions remain unknown unless established by specific observations.

Consult the archive for individual parameter references and uncertainty intervals before scientific use.

Scientific data

Radius1 Earth radii
Mass / minimum mass0.972 Earth masses (M-R relationship)
Orbital period2.25544 Earth days
Host star temperature3,297 K
Host star mass0.407 Solar masses
Host star radius0.25 Solar radii
Distance109.888 parsecs
Discovery year2,019
Discovery methodTransit
Discovery facilityK2
Discovery publication2019-07

Uncertainties and parameter provenance

Archive uncertainty ranges and published references, where available. A missing uncertainty does not imply an exact value.

ParameterUncertainty / source
Radius+0.1 / -0.09Adams et al. 2021
Mass / minimum massUpper uncertainty unavailable / Lower uncertainty unavailableCalculated Value
Orbital period+0.00009 / -0.00009Adams et al. 2021

Sources

NASA Exoplanet Archive · Planetary Systems Composite Parameters (PSCompPars).

Open the scientific archive record ↗

Last changed in this atlas: 04/10/2026, 11:39:41. Read our methodology.

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