Kepler-1649

Star

Kepler-1649 — a small, cool red dwarf only about a fifth of the Sun's mass, ~300 light-years away in Cygnus. Faint and long-lived, it hosts two Earth-size planets — one of them, c, temperate and remarkably Earth-like in size and sunlight.

Open in 3D viewSee Kepler-1649 in the live, interactive 3D map

Key facts

Mass

3.94 × 10²⁹ kg

0.198 M☉

Radius

161,402 km

23% of the Sun's radius

Science

Physical

Mass: 3.94 × 10²⁹ kg · 0.198 M☉
Radius: 161,402 km · 23% of the Sun's radius
Density: 22,360 kg/m³ · 22× water

Radiation & temperature

Luminosity: 2.05 × 10²⁴ W · 0.00534 L☉

Discovery & history

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

A faint Kepler target whose two small planets emerged from careful analysis; the habitable-zone planet c was announced in 2020 from a re-examination of the data.

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