HD 175607 b
HD 175607 b is a super-Earth orbiting the G6 V star HD 175607 in the constellation Pavo. It lies about 132 light-years from Earth and was discovered in 2015 using the radial velocity method.
Is HD 175607 b in the Habitable Zone?
The position of HD 175607 b relative to the habitable zone of HD 175607 cannot be precisely determined from the available orbital data.
Habitable zone of HD 175607: 0.468–1.115 AU (conservative: 0.593–1.057 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 175607 b — one full orbit around HD 175607 — lasts 29.0 Earth days, shorter than Mercury's 88-day year. Its orbit is mildly elliptical (eccentricity 0.11).
How Was HD 175607 b Discovered?
HD 175607 b was discovered in 2015 using the radial velocity method, with observations from La Silla 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 175607 b?
HD 175607 b is 131.5 light-years (40.3 parsecs) from Earth. Light arriving here tonight left the planet around the year 1895. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 2,314,400 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 175607 b scores 0.27, ranking #2,544 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 175607
HD 175607
- Spectral type
- G6 V
- Surface temperature
- 5,392 K (Sun: 5,772 K)
- Mass
- 0.71 M☉
- Radius
- 0.70 R☉
- Age
- 10.3 billion years (Sun: 4.6)
Planetary System
HD 175607 b is the only planet known to orbit HD 175607 so far.
HD 175607 b — Complete Data
| Mass (best estimate) | 8.98 Earth masses |
|---|---|
| Orbital period | 29.01 days |
| Eccentricity | 0.110 |
| Earth Similarity Index | 0.27 |
| Distance from Earth | 131.5 light-years (40.3 parsecs) |
| Constellation | Pavo |
| Discovery method | Radial Velocity |
| Discovery facility | La Silla Observatory |
| Discovery year | 2015 |
Data: NASA Exoplanet Archive, last updated 2015-11-18. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 175607 b
Is HD 175607 b habitable?
HD 175607 b is not known to orbit within the habitable zone of HD 175607, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is HD 175607 b?
HD 175607 b is about 132 light-years from Earth in the constellation Pavo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 2,314,400 years to get there.
How long is a year on HD 175607 b?
One orbit around HD 175607 takes 29.0 Earth days — short enough that 13 of its years would fit into one Earth year.
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