HD 10697 b
HD 10697 b is a cold gas giant orbiting HD 10697 in the constellation Pisces. It lies about 108 light-years from Earth and was discovered in 1999 using the radial velocity method.
Is HD 10697 b in the Habitable Zone?
The position of HD 10697 b relative to the habitable zone of HD 10697 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HD 10697 b — one full orbit around HD 10697 — lasts 1,075.4 Earth days, longer than an Earth year. It orbits at an average distance of 2.051 AU. Its orbit is mildly elliptical (eccentricity 0.10).
How Was HD 10697 b Discovered?
HD 10697 b was discovered in 1999 using the radial velocity method, with observations from W. M. Keck 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 HD 10697 b?
HD 10697 b is 108.0 light-years (33.1 parsecs) from Earth. Light arriving here tonight left the planet around the year 1918. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 1,900,800 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 10697 b scores 0.38, ranking #552 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 10697
HD 10697
- Mass
- 0.99 M☉
Planetary System
HD 10697 b is the only planet known to orbit HD 10697 so far.
HD 10697 b — Complete Data
| Mass | 1,825.29 Earth masses (5.743 Jupiter masses) |
|---|---|
| Orbital period | 1,075.38 days |
| Orbital distance | 2.051 AU |
| Eccentricity | 0.104 |
| Earth Similarity Index | 0.38 |
| Distance from Earth | 108.0 light-years (33.1 parsecs) |
| Constellation | Pisces |
| Discovery method | Radial Velocity |
| Discovery facility | W. M. Keck Observatory |
| Discovery year | 1999 |
Data: NASA Exoplanet Archive, last updated 2023-06-12. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 10697 b
Is HD 10697 b habitable?
HD 10697 b is not known to orbit within the habitable zone of HD 10697, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HD 10697 b?
HD 10697 b is about 108 light-years from Earth in the constellation Pisces. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 1,900,800 years to get there.
How long is a year on HD 10697 b?
One orbit around HD 10697 takes 1,075.4 Earth days.
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