HIP 8923 b
HIP 8923 b is a cold gas giant orbiting the G3 V star HIP 8923 in the constellation Cetus. It lies about 215 light-years from Earth and was discovered in 2026 using the radial velocity method.
Is HIP 8923 b in the Habitable Zone?
The position of HIP 8923 b relative to the habitable zone of HIP 8923 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HIP 8923 b — one full orbit around HIP 8923 — lasts 5,160.0 Earth days, longer than Jupiter's 12-year orbit. It orbits at an average distance of 5.900 AU. Its orbit is nearly circular (eccentricity 0.011).
How Was HIP 8923 b Discovered?
HIP 8923 b 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 8923 b?
HIP 8923 b is 215.2 light-years (66.0 parsecs) from Earth. Light arriving here tonight left the planet around the year 1811. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,787,520 years to make the journey.
The Host Star: HIP 8923
HIP 8923
- Spectral type
- G3 V
- Surface temperature
- 5,980 K (Sun: 5,772 K)
- Mass
- 1.01 M☉
- Age
- 1.7 billion years (Sun: 4.6)
Planetary System
HIP 8923 b is the only planet known to orbit HIP 8923 so far.
HIP 8923 b — Complete Data
| Mass | 3,171.93 Earth masses (9.980 Jupiter masses) |
|---|---|
| Orbital period | 5,160.00 days |
| Orbital distance | 5.900 AU |
| Eccentricity | 0.011 |
| Distance from Earth | 215.2 light-years (66.0 parsecs) |
| Constellation | Cetus |
| 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 8923 b
Is HIP 8923 b habitable?
HIP 8923 b is not known to orbit within the habitable zone of HIP 8923, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HIP 8923 b?
HIP 8923 b is about 215 light-years from Earth in the constellation Cetus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,787,520 years to get there.
How long is a year on HIP 8923 b?
One orbit around HIP 8923 takes 5,160.0 Earth days.
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