Kepler-452

Star

Kepler-452 — a yellow G2 star almost identical to the Sun (about 1.04 solar masses, 1.1 solar radii, 5,757 K), roughly 1,800 light-years away in Cygnus. A little older than the Sun, it is one of the closest solar analogues known to host a temperate, near-Earth-size planet.

Open in 3D viewSee Kepler-452 in the live, interactive 3D map

Key facts

Mass

2.06 × 10³⁰ kg

1.04 M☉

Radius

772,227 km

1.11× wider than the Sun

Surface temperature

5,757 K (5484 °C)

Luminosity

4.65 × 10²⁶ W

Spectral type

G2 (Sun-like)

Science

Physical

Mass: 2.06 × 10³⁰ kg · 1.04 M☉
Radius: 772,227 km · 1.11× wider than the Sun
Density: 1,069 kg/m³ · 1.1× water
Spectral type: G2 (Sun-like)

Rotation

Note: A quiet, mature solar-type star; the interest is its Earth-cousin planet, not the star itself.

Composition

By mass: A hydrogen/helium G2 star almost identical to the Sun — about 1.04 solar masses, 1.1 solar radii and 5,757 K, roughly 1,800 light-years away. A little older than the Sun, it is one of the closest solar analogues known to host a temperate, near-Earth-size planet.

Temperature

Surface: 5,757 K (5484 °C)

Radiation & temperature

Luminosity: 4.67 × 10²⁶ W · 1.22 L☉
Surface temperature: 5,757 K (5484 °C)
Peak wavelength: 503 nm · green-yellow visible light

Discovery & history

Name: A Kepler-mission catalogue designation; no proper name.

Catalogued by NASA's Kepler mission and confirmed in 2015 as the host of Kepler-452 b — the discovery that made it famous as a 'Sun's twin' with an 'Earth-cousin' planet. Its Sun-like nature is exactly what made that planet such a landmark.

Images

Where to find it — in Cygnus, the Swan (IAU constellation chart). To the eye it is a single point of light; no telescope has imaged its surface. — IAU / Sky & Telescope, R. Sinnott & R. Fienberg (CC BY 3.0) · Wikimedia Commons

Images from open archives · credit shown per image