HD 196067 c
HD 196067 c is a Neptune-like planet orbiting the G0 V star HD 196067 in the constellation Octans. It lies about 130 light-years from Earth and was discovered in 2025 using the radial velocity method.
Is HD 196067 c in the Habitable Zone?
The position of HD 196067 c relative to the habitable zone of HD 196067 cannot be precisely determined from the available orbital data.
Habitable zone of HD 196067: 1.387–3.245 AU (conservative: 1.757–3.076 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 196067 c — one full orbit around HD 196067 — lasts 4.60 Earth days, shorter than Mercury's 88-day year. Its orbit is mildly elliptical (eccentricity 0.24).
How Was HD 196067 c Discovered?
HD 196067 c was discovered in 2025 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 196067 c?
HD 196067 c is 130.2 light-years (39.9 parsecs) from Earth. Light arriving here tonight left the planet around the year 1896. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 2,291,520 years to make the journey.
The Host Star: HD 196067
HD 196067 c belongs to a system of 2 stars; it orbits HD 196067.
HD 196067
- Spectral type
- G0 V
- Surface temperature
- 6,072 K (Sun: 5,772 K)
- Mass
- 1.16 M☉
- Radius
- 1.71 R☉
- Luminosity
- 3.5400 L☉
- Age
- 4.2 billion years (Sun: 4.6)
The HD 196067 Planetary System
HD 196067 c is one of 2 known planets in the HD 196067 system. Its siblings:
- HD 196067 b (Cold Gas Giant)
HD 196067 c — Complete Data
| Mass (best estimate) | 10.40 Earth masses |
|---|---|
| Orbital period | 4.60 days |
| Eccentricity | 0.235 |
| Distance from Earth | 130.2 light-years (39.9 parsecs) |
| Constellation | Octans |
| Discovery method | Radial Velocity |
| Discovery facility | La Silla Observatory |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-10-30. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 196067 c
Is HD 196067 c habitable?
HD 196067 c is not known to orbit within the habitable zone of HD 196067, and as a Neptune-like planet it is an unlikely candidate for life as we know it.
How far away is HD 196067 c?
HD 196067 c is about 130 light-years from Earth in the constellation Octans. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 2,291,520 years to get there.
How long is a year on HD 196067 c?
One orbit around HD 196067 takes 4.6 Earth days — short enough that 79 of its years would fit into one Earth year.
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