HD 145934 b
HD 145934 b is a cold gas giant orbiting HD 145934 in the constellation Hercules. It lies about 743 light-years from Earth and was discovered in 2015 using the radial velocity method.
Is HD 145934 b in the Habitable Zone?
The position of HD 145934 b relative to the habitable zone of HD 145934 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HD 145934 b — one full orbit around HD 145934 — lasts 2,751.5 Earth days, longer than an Earth year. It orbits at an average distance of 4.890 AU. Its orbit is mildly elliptical (eccentricity 0.08).
How Was HD 145934 b Discovered?
HD 145934 b was discovered in 2015 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 145934 b?
HD 145934 b is 743.2 light-years (227.9 parsecs) from Earth. Light arriving here tonight left the planet around the year 1283. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 13,080,320 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 145934 b scores 0.39, ranking #520 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 145934
HD 145934
- Mass
- 2.06 M☉
Planetary System
HD 145934 b is the only planet known to orbit HD 145934 so far.
HD 145934 b — Complete Data
| Mass | 658.54 Earth masses (2.072 Jupiter masses) |
|---|---|
| Orbital period | 2,751.53 days |
| Orbital distance | 4.890 AU |
| Eccentricity | 0.078 |
| Earth Similarity Index | 0.39 |
| Distance from Earth | 743.2 light-years (227.9 parsecs) |
| Constellation | Hercules |
| Discovery method | Radial Velocity |
| Discovery facility | W. M. Keck Observatory |
| Discovery year | 2015 |
Data: NASA Exoplanet Archive, last updated 2023-06-12. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 145934 b
Is HD 145934 b habitable?
HD 145934 b is not known to orbit within the habitable zone of HD 145934, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HD 145934 b?
HD 145934 b is about 743 light-years from Earth in the constellation Hercules. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 13,080,320 years to get there.
How long is a year on HD 145934 b?
One orbit around HD 145934 takes 2,751.5 Earth days.
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