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1 known planet · 2,681 light years

NGC 2682 Sand 978

NGC 2682 Sand 978 is a giant star (K4 III) 2,681 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

NGC 2682 Sand 978

Type
K4 III
Surface
≈ 4,200 K
Size
21.02 × the Sun
Mass
1.37 × the Sun
Brightness
143 × the Sun
Habitable zone
9.67–24.2 AU

The planets

NGC 2682 Sand 978

NGC 2682 Sand 978 b

Year
511.21 days
Distance from star
1.39 AU
Mass
at least 2.2 Jupiters
Size
13 × Earth
Found
2017, radial velocity (Multiple Observatories)
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 wobble

The planet tugs its star back and forth. Spectrographs measure the tiny shift in the star's light, which gives the planet's year and a minimum mass.

Sources

  1. Planet and star parameters: NASA Exoplanet Archive, Planetary Systems Composite Parameters, retrieved 1 Nov 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.
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