![Kepler-1979 b: 2.6 Times Jupiter](https://cdn.slatesource.com/c/7/b/c7bc4bab-6898-48c2-aac4-a25257dd5f71.webp)

# Kepler-1979 b: 2.6 Times Jupiter

- [Made in Slatesource](https://slatesource.com/@steph/kepler-1979-b-2-6-times-jupiter)
- By [Steph](https://slatesource.com/@steph)
- Created on Sep 19, 2026

## Gas giant around Kepler-1979

It is 2.62 times Jupiter's radius, closest in size to Jupiter. A year there lasts 18.51 days, on an orbit 3 times closer to its star than Mercury is to the Sun. Its equilibrium temperature is 683 K, hotter than any desert. The host star Kepler-1979 runs at 5942 K with 1.03 times the Sun's mass.

Radius

29.33 Earth radii

Equilibrium temperature

683 K (measured)

One year

18.51 days

Orbit radius

0.1383 AU

Host star

Kepler-1979 at 5942 K

Distance

3510 light-years

Starlight blocked

8.200% at each transit

What a crossing measures

The fraction of starlight blocked sets the radius against the star's.

**2.6x** Jupiter: among the largest planets measured

Known and unknown, as the archive has it

0%

A measured radius. Yes.

A measured mass. No.

A density, so rock and gas can be told apart. No.

An orbital distance. Yes.

A temperature someone observed rather than calculated. Yes.

The shape of the orbit. Yes.

The detection is a shadow crossing a disc. Shadows have no weight, which is the whole reason the mass column is empty.

Found by Kepler in 2023. Kepler's method needed repetition, not brightness. It could find small planets around faint stars, provided they came round quickly enough to be seen twice.

[NASA Exoplanet Archive: source data, including the values not used here](https://exoplanetarchive.ipac.caltech.edu/overview/Kepler-1979%20b?utm_source=slatesource)