HD 150010 b
HD 150010 b is a cold gas giant orbiting the K2 III star HD 150010 in the constellation Draco. It lies about 471 light-years from Earth and was discovered in 2022 using the radial velocity method.
Is HD 150010 b in the Habitable Zone?
HD 150010 b orbits inside the inner edge of the habitable zone of HD 150010. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of HD 150010: 7.918–19.890 AU (conservative: 10.029–18.858 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 150010 b — one full orbit around HD 150010 — lasts 562.0 Earth days, longer than an Earth year. It orbits at an average distance of 1.400 AU. Its orbit is mildly elliptical (eccentricity 0.20).
How Was HD 150010 b Discovered?
HD 150010 b was discovered in 2022 using the radial velocity method, with observations from Bohyunsan Optical Astronomical 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 150010 b?
HD 150010 b is 471.3 light-years (144.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1555. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 8,294,880 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 150010 b scores 0.09, ranking #4,535 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 150010
HD 150010
- Spectral type
- K2 III
- Surface temperature
- 4,153 K (Sun: 5,772 K)
- Mass
- 1.30 M☉
- Radius
- 16.20 R☉
- Luminosity
- 95.9997 L☉
- Age
- 4.9 billion years (Sun: 4.6)
Planetary System
HD 150010 b is the only planet known to orbit HD 150010 so far.
HD 150010 b — Complete Data
| Mass (best estimate) | 762.79 Earth masses |
|---|---|
| Orbital period | 562.00 days |
| Orbital distance | 1.400 AU |
| Eccentricity | 0.200 |
| Earth Similarity Index | 0.09 |
| Distance from Earth | 471.3 light-years (144.5 parsecs) |
| Constellation | Draco |
| Discovery method | Radial Velocity |
| Discovery facility | Bohyunsan Optical Astronomical Observatory |
| Discovery year | 2022 |
Data: NASA Exoplanet Archive, last updated 2022-06-27. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 150010 b
Is HD 150010 b habitable?
No — HD 150010 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is HD 150010 b?
HD 150010 b is about 471 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 8,294,880 years to get there.
How long is a year on HD 150010 b?
One orbit around HD 150010 takes 562.0 Earth days.
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