Gliese 682

Star

Gliese 682 - a nearby red dwarf 16.3 light-years away in Scorpius, one of the closest stars to the Sun, host to two planets found from its radial-velocity wobble.

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Key facts

Mass

5.37 × 10²⁹ kg

0.27 M☉

Radius

207,319 km

30% of the Sun's radius

Surface temperature

3,028 K (2755 °C)

Luminosity

7.66 × 10²³ W

Spectral type

M3.5V (red dwarf)

Science

Physical

Mass: 5.37 × 10²⁹ kg · 0.27 M☉
Radius: 207,319 km · 30% of the Sun's radius
Density: 14,387 kg/m³ · 14× water
Spectral type: M3.5V (red dwarf)

Rotation

Note: A quiet nearby red dwarf whose two planets emerged from HARPS radial-velocity monitoring.

Composition

By mass: A hydrogen/helium red dwarf about 0.27 solar mass and ~0.2% of the Sun's light, 16.3 light-years away in Scorpius — among the closest stars to the Sun, host to two super-Earths.

Temperature

Surface: 3,028 K (2755 °C)

Radiation & temperature

Luminosity: 7.66 × 10²³ W · 0.002 L☉
Surface temperature: 3,028 K (2755 °C)
Peak wavelength: 957 nm · near-infrared (mostly invisible to the eye)

Discovery & history

Name: A catalogue designation (Gliese 682); the star has no proper name.

A quiet nearby red dwarf; two candidate planets were reported in 2014 from HARPS radial-velocity monitoring of a large sample of nearby M dwarfs.

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