HD 206893 b
HD 206893 b is a exoplanet orbiting HD 206893 in the constellation Capricornus. It lies about 133 light-years from Earth and was discovered in 2021 using the imaging method.
Is HD 206893 b in the Habitable Zone?
The position of HD 206893 b relative to the habitable zone of HD 206893 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HD 206893 b — one full orbit around HD 206893 — lasts 11,100.0 Earth days, longer than Jupiter's 12-year orbit. It orbits at an average distance of 10.750 AU. Its orbit is mildly elliptical (eccentricity 0.07).
How Was HD 206893 b Discovered?
HD 206893 b was discovered in 2021 using the imaging method, with observations from Gemini Observatory.
Direct imaging captures actual pictures of a planet by blocking out the overwhelming glare of its host star. It works best for young, hot, massive planets on wide orbits.
How Far Away Is HD 206893 b?
HD 206893 b is 132.9 light-years (40.8 parsecs) from Earth. Light arriving here tonight left the planet around the year 1894. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 2,339,040 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 206893 b scores 0.10, ranking #4,466 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 206893
HD 206893
- Mass
- 1.31 M☉
The HD 206893 Planetary System
HD 206893 b is one of 2 known planets in the HD 206893 system. Its siblings:
- HD 206893 c (Cold Gas Giant)
HD 206893 b — Complete Data
| Mass | 6,197.65 Earth masses (19.500 Jupiter masses) |
|---|---|
| Orbital period | 11,100.00 days |
| Orbital distance | 10.750 AU |
| Eccentricity | 0.069 |
| Earth Similarity Index | 0.10 |
| Distance from Earth | 132.9 light-years (40.8 parsecs) |
| Constellation | Capricornus |
| Discovery method | Imaging |
| Discovery facility | Gemini Observatory |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2026-05-07. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 206893 b
Is HD 206893 b habitable?
HD 206893 b is not known to orbit within the habitable zone of HD 206893.
How far away is HD 206893 b?
HD 206893 b is about 133 light-years from Earth in the constellation Capricornus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 2,339,040 years to get there.
How long is a year on HD 206893 b?
One orbit around HD 206893 takes 11,100.0 Earth days.
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