HD 132563 b
HD 132563 b is a cold gas giant orbiting HD 132563 in the constellation Boötes. It lies about 343 light-years from Earth and was discovered in 2011 using the radial velocity method.
Is HD 132563 b in the Habitable Zone?
HD 132563 b orbits beyond the outer edge of the habitable zone of HD 132563. At that distance, any surface water would almost certainly be frozen.
Habitable zone of HD 132563: 1.119–2.607 AU (conservative: 1.418–2.472 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Orbit and Year Length
A year on HD 132563 b — one full orbit around HD 132563 — lasts 1,544.0 Earth days, longer than an Earth year. It orbits at an average distance of 2.620 AU. Its orbit is mildly elliptical (eccentricity 0.22).
How Was HD 132563 b Discovered?
HD 132563 b was discovered in 2011 using the radial velocity method, with observations from Roque de los Muchachos 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 132563 b?
HD 132563 b is 343.0 light-years (105.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1683. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 6,036,800 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 132563 b scores 0.30, ranking #1,300 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 132563
HD 132563 b belongs to a system of 3 stars; it orbits HD 132563.
HD 132563
- Surface temperature
- 6,289 K (Sun: 5,772 K)
- Mass
- 1.23 M☉
- Radius
- 1.30 R☉
- Luminosity
- 2.3664 L☉
Planetary System
HD 132563 b is the only planet known to orbit HD 132563 so far.
HD 132563 b — Complete Data
| Mass (best estimate) | 473.55 Earth masses |
|---|---|
| Orbital period | 1,544.00 days |
| Orbital distance | 2.620 AU |
| Eccentricity | 0.220 |
| Earth Similarity Index | 0.30 |
| Distance from Earth | 343.0 light-years (105.2 parsecs) |
| Constellation | Boötes |
| Discovery method | Radial Velocity |
| Discovery facility | Roque de los Muchachos Observatory |
| Discovery year | 2011 |
Data: NASA Exoplanet Archive, last updated 2019-01-28. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 132563 b
Is HD 132563 b habitable?
No — HD 132563 b orbits outside the habitable zone of HD 132563 and is likely too cold for liquid water on its surface.
How far away is HD 132563 b?
HD 132563 b is about 343 light-years from Earth in the constellation Boötes. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 6,036,800 years to get there.
How long is a year on HD 132563 b?
One orbit around HD 132563 takes 1,544.0 Earth days.
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