HD 134060 c
HD 134060 c is a Neptune-like planet orbiting the G3 IV star HD 134060 in the constellation Circinus. It lies about 78 light-years from Earth and was discovered in 2019 using the radial velocity method.
Is HD 134060 c in the Habitable Zone?
HD 134060 c orbits beyond the outer edge of the habitable zone of HD 134060. At that distance, any surface water would almost certainly be frozen.
Habitable zone of HD 134060: 0.890–2.088 AU (conservative: 1.128–1.979 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 HD 134060 c — one full orbit around HD 134060 — lasts 1,291.6 Earth days, longer than an Earth year. It orbits at an average distance of 2.393 AU. Its orbit is mildly elliptical (eccentricity 0.11).
How Was HD 134060 c Discovered?
HD 134060 c was discovered in 2019 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 134060 c?
HD 134060 c is 78.3 light-years (24.0 parsecs) from Earth. Light arriving here tonight left the planet around the year 1948. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 1,378,080 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 134060 c scores 0.34, ranking #816 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 134060
HD 134060
- Spectral type
- G3 IV
- Surface temperature
- 5,966 K (Sun: 5,772 K)
- Mass
- 1.10 M☉
- Luminosity
- 1.4400 L☉
The HD 134060 Planetary System
HD 134060 c is one of 2 known planets in the HD 134060 system. Its siblings:
- HD 134060 b (Neptune-like)
HD 134060 c — Complete Data
| Mass (best estimate) | 29.29 Earth masses |
|---|---|
| Orbital period | 1,291.56 days |
| Orbital distance | 2.393 AU |
| Eccentricity | 0.110 |
| Earth Similarity Index | 0.34 |
| Distance from Earth | 78.3 light-years (24.0 parsecs) |
| Constellation | Circinus |
| Discovery method | Radial Velocity |
| Discovery facility | La Silla Observatory |
| Discovery year | 2019 |
Data: NASA Exoplanet Archive, last updated 2019-02-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 134060 c
Is HD 134060 c habitable?
No — HD 134060 c orbits outside the habitable zone of HD 134060 and is likely too cold for liquid water on its surface.
How far away is HD 134060 c?
HD 134060 c is about 78 light-years from Earth in the constellation Circinus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 1,378,080 years to get there.
How long is a year on HD 134060 c?
One orbit around HD 134060 takes 1,291.6 Earth days.
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