Gliese 667 A

Star

Gliese 667 A - the brightest star of the GJ 667 triple, a K3V orange dwarf. With its close companion B it forms a pair that the planet-hosting red dwarf C orbits from about 230 AU away.

Open in 3D viewSee Gliese 667 A in the live, interactive 3D map

Key facts

Mass

1.45 × 10³⁰ kg

0.73 M☉

Radius

528,732 km

76% of the Sun's radius

Surface temperature

4,430 K (4157 °C)

Luminosity

5.36 × 10²⁵ W

Spectral type

K3V (orange dwarf)

Science

Physical

Mass: 1.45 × 10³⁰ kg · 0.73 M☉
Radius: 528,732 km · 76% of the Sun's radius
Density: 2,345 kg/m³ · 2.3× water
Spectral type: K3V (orange dwarf)

Composition

By mass: An orange dwarf about 73% of the Sun's mass; with its companion B it forms the pair that the planet host C orbits.

Temperature

Surface: 4,430 K (4157 °C)

Radiation & temperature

Luminosity: 5.36 × 10²⁵ W · 0.14 L☉
Surface temperature: 4,430 K (4157 °C)
Peak wavelength: 654 nm · red light

Discovery & history

Name: The primary (A) of the GJ 667 triple star system.

The bright naked-eye-borderline pair GJ 667 AB in Scorpius, long catalogued; the faint C companion that hosts planets lies far outside them.

Images

Where to find it — in Scorpius, the Scorpion (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