HIP 75092 b
HIP 75092 b is a cold gas giant orbiting the K0 III star HIP 75092 in the constellation Libra. It lies about 266 light-years from Earth and was discovered in 2021 using the radial velocity method.
Is HIP 75092 b in the Habitable Zone?
HIP 75092 b orbits inside the inner edge of the habitable zone of HIP 75092. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of HIP 75092: 2.547–6.186 AU (conservative: 3.227–5.865 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Orbit and Year Length
A year on HIP 75092 b — one full orbit around HIP 75092 — lasts 926.4 Earth days, longer than an Earth year. It orbits at an average distance of 2.020 AU. Its orbit is highly elliptical (eccentricity 0.42), swinging dramatically closer to and farther from its star.
How Was HIP 75092 b Discovered?
HIP 75092 b was discovered in 2021 using the radial velocity method, with observations from Multiple Observatories.
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 75092 b?
HIP 75092 b is 266.4 light-years (81.7 parsecs) from Earth. Light arriving here tonight left the planet around the year 1760. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 4,688,640 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 75092 b scores 0.30, ranking #1,287 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HIP 75092
HIP 75092
- Spectral type
- K0 III
- Surface temperature
- 4,891 K (Sun: 5,772 K)
- Mass
- 1.28 M☉
- Radius
- 4.53 R☉
- Luminosity
- 10.4701 L☉
- Age
- 4.3 billion years (Sun: 4.6)
Planetary System
HIP 75092 b is the only planet known to orbit HIP 75092 so far.
HIP 75092 b — Complete Data
| Mass (best estimate) | 568.91 Earth masses |
|---|---|
| Orbital period | 926.40 days |
| Orbital distance | 2.020 AU |
| Eccentricity | 0.420 |
| Earth Similarity Index | 0.30 |
| Distance from Earth | 266.4 light-years (81.7 parsecs) |
| Constellation | Libra |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Observatories |
| Discovery year | 2021 |
Data: NASA Exoplanet Archive, last updated 2021-05-17. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HIP 75092 b
Is HIP 75092 b habitable?
No — HIP 75092 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is HIP 75092 b?
HIP 75092 b is about 266 light-years from Earth in the constellation Libra. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 4,688,640 years to get there.
How long is a year on HIP 75092 b?
One orbit around HIP 75092 takes 926.4 Earth days.
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