GJ 3323

Star

GJ 3323 - a small red dwarf 17.5 light-years away in Eridanus, host to two super-Earths found from the star's radial-velocity wobble. One orbits near the inner edge of the temperate zone.

Open in 3D viewSee GJ 3323 in the live, interactive 3D map

Key facts

Mass

3.26 × 10²⁹ kg

0.164 M☉

Radius

82,788 km

12% of the Sun's radius

Surface temperature

3,159 K (2886 °C)

Luminosity

1.03 × 10²⁴ W

Spectral type

M4V (red dwarf)

Science

Physical

Mass: 3.26 × 10²⁹ kg · 0.164 M☉
Radius: 82,788 km · 12% of the Sun's radius
Density: 137,235 kg/m³ · 1.4e+02× water
Spectral type: M4V (red dwarf)

Rotation

Note: A low-mass red dwarf; its two planets were teased out with ESO's HARPS.

Composition

By mass: A small hydrogen/helium red dwarf about 0.16 solar mass and ~0.3% of the Sun's light, 17.5 light-years away in Eridanus, host to two super-Earths found by radial velocity.

Temperature

Surface: 3,159 K (2886 °C)

Radiation & temperature

Luminosity: 1.03 × 10²⁴ W · 0.0027 L☉
Surface temperature: 3,159 K (2886 °C)
Peak wavelength: 917 nm · near-infrared (mostly invisible to the eye)

Discovery & history

Name: A catalogue designation (Gliese-Jahreiss 3323); also Luyten's LP 656-38.

A nearby low-mass red dwarf whose two planets were announced in 2017 by a team using ESO's HARPS spectrograph.

Images

Where to find it — in Eridanus, the River (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