The HD 82943 System
HD 82943 is a planetary system in the constellation Hydra hosting 2 confirmed exoplanets, about 90 light-years from Earth. One of its planets orbits within the habitable zone, where liquid water could exist on a planetary surface.
HD 82943: Star and Habitable Zone
HD 82943
- Surface temperature
- 5,935 K (Sun: 5,772 K)
- Mass
- 1.08 M☉
- Radius
- 1.18 R☉
- Luminosity
- 1.5633 L☉
Habitable zone of HD 82943: 0.929–2.181 AU (conservative: 1.177–2.068 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
All 2 Planets in the HD 82943 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 82943 b HZ | Cold Gas Giant | 441 d | — | 0.39 | 2003 |
| HD 82943 c | Cold Gas Giant | 220 d | — | 0.29 | 2003 |
Discovery History
The first planet found here, HD 82943 b, was discovered in 2003 using the radial velocity method.
- 2003 — HD 82943 b (Radial Velocity)
- 2003 — HD 82943 c (Radial Velocity)
Frequently Asked Questions About HD 82943
How many planets does HD 82943 have?
HD 82943 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HD 82943 system habitable?
One planet in the system orbits within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.
How far away is HD 82943?
HD 82943 is about 90 light-years from Earth in the constellation Hydra.
Explore the HD 82943 system in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
