eps Ind A b
eps Ind A b is a cold gas giant orbiting eps Ind A in the constellation Indus. It lies about 12 light-years from Earth and was discovered in 2019 using the radial velocity method.
Is eps Ind A b in the Habitable Zone?
The position of eps Ind A b relative to the habitable zone of eps Ind A cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on eps Ind A b — one full orbit around eps Ind A — lasts 39,400.0 Earth days, longer than Jupiter's 12-year orbit. It orbits at an average distance of 20.900 AU. Its orbit is mildly elliptical (eccentricity 0.24).
How Was eps Ind A b Discovered?
eps Ind A b was discovered in 2019 using the radial velocity method, with observations from La Silla 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 eps Ind A b?
eps Ind A b is 11.9 light-years (3.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 2015. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 209,440 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. eps Ind A b scores 0.07, ranking #4,936 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: eps Ind A
eps Ind A b belongs to a system of 3 stars; it orbits eps Ind A.
eps Ind A
- Mass
- 0.78 M☉
Planetary System
eps Ind A b is the only planet known to orbit eps Ind A so far.
eps Ind A b — Complete Data
| Mass | 2,425.03 Earth masses (7.630 Jupiter masses) |
|---|---|
| Orbital period | 39,400.00 days |
| Orbital distance | 20.900 AU |
| Eccentricity | 0.244 |
| Earth Similarity Index | 0.07 |
| Distance from Earth | 11.9 light-years (3.6 parsecs) |
| Constellation | Indus |
| Discovery method | Radial Velocity |
| Discovery facility | La Silla Observatory |
| Discovery year | 2019 |
Data: NASA Exoplanet Archive, last updated 2026-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About eps Ind A b
Is eps Ind A b habitable?
eps Ind A b is not known to orbit within the habitable zone of eps Ind A, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is eps Ind A b?
eps Ind A b is about 12 light-years from Earth in the constellation Indus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 209,440 years to get there.
How long is a year on eps Ind A b?
One orbit around eps Ind A takes 39,400.0 Earth days.
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