HIP 10090 c
HIP 10090 c is a cold gas giant orbiting the K0 star HIP 10090 in the constellation Fornax. It lies about 269 light-years from Earth and was discovered in 2026 using the radial velocity method.
Is HIP 10090 c in the Habitable Zone?
The position of HIP 10090 c relative to the habitable zone of HIP 10090 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HIP 10090 c — one full orbit around HIP 10090 — lasts 321.8 Earth days, between the years of Mercury (88 days) and Earth (365 days). It orbits at an average distance of 0.900 AU — comparable to the inner Solar System. Its orbit is mildly elliptical (eccentricity 0.19).
How Was HIP 10090 c Discovered?
HIP 10090 c was discovered in 2026 using the radial velocity method, with observations from Multiple Facilities.
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 10090 c?
HIP 10090 c is 268.7 light-years (82.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1758. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 4,729,120 years to make the journey.
The Host Star: HIP 10090
HIP 10090
- Spectral type
- K0
- Surface temperature
- 5,661 K (Sun: 5,772 K)
- Mass
- 0.94 M☉
- Age
- 5.0 billion years (Sun: 4.6)
The HIP 10090 Planetary System
HIP 10090 c is one of 2 known planets in the HIP 10090 system. Its siblings:
- HIP 10090 b (Cold Gas Giant)
HIP 10090 c — Complete Data
| Mass | 270.15 Earth masses (0.850 Jupiter masses) |
|---|---|
| Orbital period | 321.82 days |
| Orbital distance | 0.900 AU |
| Eccentricity | 0.188 |
| Distance from Earth | 268.7 light-years (82.4 parsecs) |
| Constellation | Fornax |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Facilities |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2026-07-02. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HIP 10090 c
Is HIP 10090 c habitable?
HIP 10090 c is not known to orbit within the habitable zone of HIP 10090, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HIP 10090 c?
HIP 10090 c is about 269 light-years from Earth in the constellation Fornax. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 4,729,120 years to get there.
How long is a year on HIP 10090 c?
One orbit around HIP 10090 takes 321.8 Earth days.
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