HD 35843 c
HD 35843 c is a super-Earth orbiting HD 35843 in the constellation Pictor. It lies about 227 light-years from Earth and was discovered in 2025 using the transit method.
How Big Is HD 35843 c?
HD 35843 c has a radius of 2.54 times that of Earth. Its mass is 11.3 times that of Earth, giving it a density of 3.80 g/cm³ — between that of rocky and gaseous planets.
Is HD 35843 c in the Habitable Zone?
HD 35843 c orbits inside the inner edge of the habitable zone of HD 35843. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of HD 35843: 0.654–1.546 AU (conservative: 0.829–1.466 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 ›
Temperature on HD 35843 c
The equilibrium temperature of HD 35843 c is about 479 K (206 °C) — hotter than anywhere on Earth. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
A year on HD 35843 c — one full orbit around HD 35843 — lasts 47.0 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.250 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.15).
How Was HD 35843 c Discovered?
HD 35843 c was discovered in 2025 using the transit method, with observations from Transiting Exoplanet Survey Satellite (TESS).
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is HD 35843 c?
HD 35843 c is 227.0 light-years (69.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1799. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,995,200 years to make the journey.
The Host Star: HD 35843
HD 35843
- Surface temperature
- 5,666 K (Sun: 5,772 K)
- Mass
- 0.94 M☉
- Radius
- 0.90 R☉
- Luminosity
- 0.7500 L☉
- Age
- 2.5 billion years (Sun: 4.6)
The HD 35843 Planetary System
HD 35843 c is one of 2 known planets in the HD 35843 system. Its siblings:
- HD 35843 b (Super Earth)
HD 35843 c — Complete Data
| Radius | 2.540 Earth radii (0.227 Jupiter radii) |
|---|---|
| Mass | 11.32 Earth masses (0.036 Jupiter masses) |
| Density | 3.80 g/cm³ (Earth: 5.51) |
| Orbital period | 46.96 days |
| Orbital distance | 0.250 AU |
| Eccentricity | 0.153 |
| Equilibrium temperature | 479 K (206 °C) |
| Distance from Earth | 227.0 light-years (69.6 parsecs) |
| Constellation | Pictor |
| Discovery method | Transit |
| Discovery facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-05-13. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 35843 c
Is HD 35843 c habitable?
No — HD 35843 c orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is HD 35843 c?
HD 35843 c is about 227 light-years from Earth in the constellation Pictor. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,995,200 years to get there.
How big is HD 35843 c compared to Earth?
HD 35843 c has 2.54 times the radius of Earth and about 11.3 times its mass.
How long is a year on HD 35843 c?
One orbit around HD 35843 takes 47.0 Earth days.
Explore HD 35843 c in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
