GJ 3082 b
GJ 3082 b is a super-Earth orbiting GJ 3082 in the constellation Phoenix. It lies about 54 light-years from Earth and was discovered in 2020 using the radial velocity method.
Is GJ 3082 b in the Habitable Zone?
The position of GJ 3082 b relative to the habitable zone of GJ 3082 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on GJ 3082 b — one full orbit around GJ 3082 — lasts 11.9 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.079 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.22).
How Was GJ 3082 b Discovered?
GJ 3082 b was discovered in 2020 using the radial velocity method, with observations from Multiple Facilities.
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 GJ 3082 b?
GJ 3082 b is 54.2 light-years (16.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1972. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 953,920 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. GJ 3082 b scores 0.40, ranking #458 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: GJ 3082
GJ 3082
- Mass
- 0.47 M☉
Planetary System
GJ 3082 b is the only planet known to orbit GJ 3082 so far.
GJ 3082 b — Complete Data
| Mass (best estimate) | 8.20 Earth masses |
|---|---|
| Orbital period | 11.95 days |
| Orbital distance | 0.079 AU |
| Eccentricity | 0.220 |
| Earth Similarity Index | 0.40 |
| Distance from Earth | 54.2 light-years (16.6 parsecs) |
| Constellation | Phoenix |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Facilities |
| Discovery year | 2020 |
Data: NASA Exoplanet Archive, last updated 2020-02-06. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About GJ 3082 b
Is GJ 3082 b habitable?
GJ 3082 b is not known to orbit within the habitable zone of GJ 3082, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is GJ 3082 b?
GJ 3082 b is about 54 light-years from Earth in the constellation Phoenix. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 953,920 years to get there.
How long is a year on GJ 3082 b?
One orbit around GJ 3082 takes 11.9 Earth days — short enough that 31 of its years would fit into one Earth year.
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