HD 11112 b
HD 11112 b is a cold gas giant orbiting HD 11112 in the constellation Phoenix. It lies about 145 light-years from Earth and was discovered in 2022 using the radial velocity method.
Is HD 11112 b in the Habitable Zone?
The position of HD 11112 b relative to the habitable zone of HD 11112 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HD 11112 b — one full orbit around HD 11112 — lasts 17,244.9 Earth days, longer than Jupiter's 12-year orbit. It orbits at an average distance of 13.380 AU. Its orbit is mildly elliptical (eccentricity 0.28).
How Was HD 11112 b Discovered?
HD 11112 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 HD 11112 b?
HD 11112 b is 144.7 light-years (44.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1882. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 2,546,720 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 11112 b scores 0.09, ranking #4,568 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 11112
HD 11112
- Mass
- 1.07 M☉
Planetary System
HD 11112 b is the only planet known to orbit HD 11112 so far.
HD 11112 b — Complete Data
| Mass | 2,598.57 Earth masses (8.176 Jupiter masses) |
|---|---|
| Orbital period | 17,244.91 days |
| Orbital distance | 13.380 AU |
| Eccentricity | 0.285 |
| Earth Similarity Index | 0.09 |
| Distance from Earth | 144.7 light-years (44.4 parsecs) |
| Constellation | Phoenix |
| 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 HD 11112 b
Is HD 11112 b habitable?
HD 11112 b is not known to orbit within the habitable zone of HD 11112, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HD 11112 b?
HD 11112 b is about 145 light-years from Earth in the constellation Phoenix. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 2,546,720 years to get there.
How long is a year on HD 11112 b?
One orbit around HD 11112 takes 17,244.9 Earth days.
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