GJ 680 b
GJ 680 b is a exoplanet orbiting GJ 680 in the constellation Ara. It lies about 32 light-years from Earth and was discovered in 2022 using the radial velocity method.
Is GJ 680 b in the Habitable Zone?
The position of GJ 680 b relative to the habitable zone of GJ 680 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on GJ 680 b — one full orbit around GJ 680 — lasts 17,281.7 Earth days, longer than Jupiter's 12-year orbit. It orbits at an average distance of 10.138 AU. Its orbit is highly elliptical (eccentricity 0.38), swinging dramatically closer to and farther from its star.
How Was GJ 680 b Discovered?
GJ 680 b was discovered in 2022 using the radial velocity method, with observations from Multiple Observatories.
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 680 b?
GJ 680 b is 31.5 light-years (9.7 parsecs) from Earth. Light arriving here tonight left the planet around the year 1995. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 554,400 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 680 b scores 0.07, ranking #4,815 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: GJ 680
GJ 680 b belongs to a system of 2 stars; it orbits GJ 680.
GJ 680
- Mass
- 0.46 M☉
Planetary System
GJ 680 b is the only planet known to orbit GJ 680 so far.
GJ 680 b — Complete Data
| Mass | 7,977.49 Earth masses (25.100 Jupiter masses) |
|---|---|
| Orbital period | 17,281.67 days |
| Orbital distance | 10.138 AU |
| Eccentricity | 0.381 |
| Earth Similarity Index | 0.07 |
| Distance from Earth | 31.5 light-years (9.7 parsecs) |
| Constellation | Ara |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Observatories |
| Discovery year | 2022 |
Data: NASA Exoplanet Archive, last updated 2023-06-12. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About GJ 680 b
Is GJ 680 b habitable?
GJ 680 b is not known to orbit within the habitable zone of GJ 680.
How far away is GJ 680 b?
GJ 680 b is about 32 light-years from Earth in the constellation Ara. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 554,400 years to get there.
How long is a year on GJ 680 b?
One orbit around GJ 680 takes 17,281.7 Earth days.
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