HIP 81208 C b
HIP 81208 C b is a exoplanet orbiting the M star HIP 81208 C in the constellation Scorpius. It lies about 481 light-years from Earth and was discovered in 2023 using the imaging method.
Is HIP 81208 C b in the Habitable Zone?
The position of HIP 81208 C b relative to the habitable zone of HIP 81208 C cannot be precisely determined from the available orbital data.
Temperature on HIP 81208 C b
The equilibrium temperature of HIP 81208 C b is about 2,050 K (1,777 °C) — hot enough to melt many metals. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
A year on HIP 81208 C b — one full orbit around HIP 81208 C — lasts 104,100.0 Earth days, longer than Jupiter's 12-year orbit. It orbits at an average distance of 23.040 AU.
How Was HIP 81208 C b Discovered?
HIP 81208 C b was discovered in 2023 using the imaging method, with observations from Paranal Observatory.
Direct imaging captures actual pictures of a planet by blocking out the overwhelming glare of its host star. It works best for young, hot, massive planets on wide orbits.
How Far Away Is HIP 81208 C b?
HIP 81208 C b is 481.2 light-years (147.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1545. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 8,469,120 years to make the journey.
The Host Star: HIP 81208 C
HIP 81208 C b belongs to a system of 3 stars; it orbits HIP 81208 C.
HIP 81208 C
- Spectral type
- M
- Mass
- 0.14 M☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
HIP 81208 C b is the only planet known to orbit HIP 81208 C so far.
HIP 81208 C b — Complete Data
| Mass | 4,703.86 Earth masses (14.800 Jupiter masses) |
|---|---|
| Orbital period | 104,100.00 days |
| Orbital distance | 23.040 AU |
| Equilibrium temperature | 2,050 K (1,777 °C) |
| Distance from Earth | 481.2 light-years (147.5 parsecs) |
| Constellation | Scorpius |
| Discovery method | Imaging |
| Discovery facility | Paranal Observatory |
| Discovery year | 2023 |
Data: NASA Exoplanet Archive, last updated 2023-07-25. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HIP 81208 C b
Is HIP 81208 C b habitable?
HIP 81208 C b is not known to orbit within the habitable zone of HIP 81208 C.
How far away is HIP 81208 C b?
HIP 81208 C b is about 481 light-years from Earth in the constellation Scorpius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 8,469,120 years to get there.
How long is a year on HIP 81208 C b?
One orbit around HIP 81208 C takes 104,100.0 Earth days.
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