HIP 109600 b
HIP 109600 b is a cold gas giant orbiting the G5 star HIP 109600 in the constellation Pegasus. It lies about 216 light-years from Earth and was discovered in 2016 using the radial velocity method.
Is HIP 109600 b in the Habitable Zone?
The position of HIP 109600 b relative to the habitable zone of HIP 109600 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HIP 109600 b — one full orbit around HIP 109600 — lasts 232.1 Earth days, between the years of Mercury (88 days) and Earth (365 days). It orbits at an average distance of 0.706 AU — comparable to the inner Solar System. Its orbit is mildly elliptical (eccentricity 0.16).
How Was HIP 109600 b Discovered?
HIP 109600 b was discovered in 2016 using the radial velocity method, with observations from Haute-Provence 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 HIP 109600 b?
HIP 109600 b is 216.4 light-years (66.3 parsecs) from Earth. Light arriving here tonight left the planet around the year 1810. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,808,640 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. HIP 109600 b scores 0.37, ranking #658 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HIP 109600
HIP 109600 b belongs to a system of 2 stars; it orbits HIP 109600.
HIP 109600
- Spectral type
- G5
- Surface temperature
- 5,530 K (Sun: 5,772 K)
- Mass
- 0.87 M☉
Planetary System
HIP 109600 b is the only planet known to orbit HIP 109600 so far.
HIP 109600 b — Complete Data
| Mass (best estimate) | 851.78 Earth masses |
|---|---|
| Orbital period | 232.08 days |
| Orbital distance | 0.706 AU |
| Eccentricity | 0.163 |
| Earth Similarity Index | 0.37 |
| Distance from Earth | 216.4 light-years (66.3 parsecs) |
| Constellation | Pegasus |
| Discovery method | Radial Velocity |
| Discovery facility | Haute-Provence Observatory |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2016-02-24. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HIP 109600 b
Is HIP 109600 b habitable?
HIP 109600 b is not known to orbit within the habitable zone of HIP 109600, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HIP 109600 b?
HIP 109600 b is about 216 light-years from Earth in the constellation Pegasus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,808,640 years to get there.
How long is a year on HIP 109600 b?
One orbit around HIP 109600 takes 232.1 Earth days.
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