13point8100 ly map
1 known planet · 20.4 light years

GJ 896 A

GJ 896 A is a red dwarf (M3.5 V) 20.4 light years away, with 1 confirmed planet. Distances and orbital speeds are to scale; the star and planets are enlarged so you can see them.

Day 0
habitable zone (estimate)planet orbits

Green band: where liquid water could exist on a planet's surface. Drag to turn the system, pinch or scroll to zoom.

The star

The star

GJ 896 A

Type
M3.5 V
Surface
≈ 3,345 K
Size
0.39 × the Sun
Mass
0.44 × the Sun
Brightness
0.0176 × the Sun
Habitable zone
0.126–0.221 AU

The planets

GJ 896 A

GJ 896 A b

Year
284.39 days
Distance from star
0.64 AU
Mass
2.3 Jupiters
Size
13 × Earth
Temperature
≈ 127 K (-146 °C)
Found
2022, astrometry (Very Long Baseline Array)
Outside the habitable zone

Masses found by the wobble method are minimums, because the orbit's tilt is unknown. Temperatures are equilibrium estimates for a bare planet, before any atmosphere.

How we know

The star's drift

The planet pulls the star in a tiny loop across the sky, measured against background stars over many years.

Sources

  1. Planet and star parameters: NASA Exoplanet Archive, Planetary Systems Composite Parameters, retrieved 31 Oct 2026. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.
  2. Position: HYG Database v4.1 (CC BY-SA 4.0).
  3. Habitable zone: a simple estimate from the star's brightness (√L × 0.95 to 1.67 AU), shown as a guide.
← Back to the 100-light-year map