HD 35759 b
HD 35759 b is a cold gas giant orbiting the G0 star HD 35759 in the constellation Camelopardalis. It lies about 232 light-years from Earth and was discovered in 2016 using the radial velocity method.
Is HD 35759 b in the Habitable Zone?
The position of HD 35759 b relative to the habitable zone of HD 35759 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HD 35759 b — one full orbit around HD 35759 — lasts 82.5 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.389 AU — comparable to the inner Solar System. Its orbit is highly elliptical (eccentricity 0.39), swinging dramatically closer to and farther from its star.
How Was HD 35759 b Discovered?
HD 35759 b was discovered in 2016 using the radial velocity method, with observations from Haute-Provence Observatory.
The radial velocity method measures the subtle wobble of a star caused by the gravitational pull of an orbiting planet, visible as periodic shifts in the star's light spectrum. The size of the wobble reveals the planet's minimum mass.
How Far Away Is HD 35759 b?
HD 35759 b is 232.4 light-years (71.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1794. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 4,090,240 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. HD 35759 b scores 0.11, ranking #4,377 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 35759
HD 35759
- Spectral type
- G0
- Surface temperature
- 6,060 K (Sun: 5,772 K)
- Mass
- 1.15 M☉
Planetary System
HD 35759 b is the only planet known to orbit HD 35759 so far.
HD 35759 b — Complete Data
| Mass (best estimate) | 1,195.04 Earth masses |
|---|---|
| Orbital period | 82.47 days |
| Orbital distance | 0.389 AU |
| Eccentricity | 0.389 |
| Earth Similarity Index | 0.11 |
| Distance from Earth | 232.4 light-years (71.2 parsecs) |
| Constellation | Camelopardalis |
| Discovery method | Radial Velocity |
| Discovery facility | Haute-Provence Observatory |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2016-02-24. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 35759 b
Is HD 35759 b habitable?
HD 35759 b is not known to orbit within the habitable zone of HD 35759, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HD 35759 b?
HD 35759 b is about 232 light-years from Earth in the constellation Camelopardalis. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 4,090,240 years to get there.
How long is a year on HD 35759 b?
One orbit around HD 35759 takes 82.5 Earth days.
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