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 (2,755 °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
- Computed from mass and radius
- Spectral type
- M3.5V (red dwarf)
Motion through space
- Proper motion
- 1.17 arcseconds per year · its drift across our sky
- SIMBAD — 2020yCat.1350....0G, 2018A&A...616A...7S
- Radial velocity
- -34.9 km/s · approaching the Sun
- SIMBAD — 2020yCat.1350....0G, 2018A&A...616A...7S
- Speed across our line of sight
- 27.9 km/s
- Computed from proper motion and parallax
- Speed through space, relative to the Sun
- 44.6 km/s
- Computed from proper motion, parallax and radial velocity
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 (2,755 °C)
Radiation & temperature
- Luminosity
- 7.66 × 10²³ W · 0.002 L☉
- Surface temperature
- 3,028 K (2,755 °C)
- Peak wavelength
- 957 nm · near-infrared (mostly invisible to the eye)
- Computed (Wien's law) from the surface temperature
Discovery & history
- Method
- Telescope
- 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
Images from open archives · credit shown per image