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EarthNeptuneKOI-94 c
0.01 AU0.1110100 AU MercuryEarthJupiterNeptune KOI-94 c · 0.10 AU
Diagram, not a photograph. Sizes to scale; distance from the star on a logarithmic scale, worked out from the orbital period and the star’s mass. The planet’s colour shows its equilibrium temperature (hot), not its real colour. Source: NASA Exoplanet Archive.

Confirmed exoplanet · Database record + computed analysis

KOI-94 c

A confirmed world orbiting KOI-94, 1,555.9 light-years away.

1,555.9 light-years (477.1 pc) Discovered 2013 · Transit

A Neptune-class world

4.32 Earth radii, in the ice-giant size range. At only 15.6 Earth masses for that size, it must be substantially gas or volatile ices: puffy, not rocky.

The orbit

Its year, one full orbit, takes just 10.4 Earth days. The orbit is strongly stretched (eccentricity 0.43), so its distance from the star, and with it the climate, swings dramatically.

Temperature and starlight

Its equilibrium temperature (the airless-world estimate) is about 739 °C. Hotter than Venus's surface. It receives 268.2 times the starlight Earth gets.

Its sun

Its star is hotter than the Sun (6,182 K), burning brighter and faster. The system holds 2 stars, so its skies have more than one sun. It shares the system with 3 other known planets.

How far is that, really?

At 1,556 light-years, tonight's light from this system left it around the year 470. A Voyager-speed probe would need roughly 27,528,533 years to get there.

How we found it

It was found by the transit method: the planet crosses its star's face on schedule, dimming it by a tiny, repeating fraction. The dip's depth gives the planet's size. The discovery was announced in 2013 from Kepler.

Everything above is computed from the archive’s measured values for this planet. Where a quantity is missing, the statement is omitted rather than guessed.

About this record

The measured values come from the NASA Exoplanet Archive, and any missing value has not been determined yet; the Atlas never fills gaps with guesses. More standout worlds: Proxima b, TRAPPIST-1e, K2-18 b, 55 Cancri e, and the detection methods that found them all.

Sister planets around KOI-94