HIP 54515 b
HIP 54515 b is a exoplanet orbiting the A5 V star HIP 54515 in the constellation Leo. It lies about 270 light-years from Earth and was discovered in 2026 using the imaging method.
Is HIP 54515 b in the Habitable Zone?
The position of HIP 54515 b relative to the habitable zone of HIP 54515 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HIP 54515 b — one full orbit around HIP 54515 — lasts 33,000.0 Earth days, longer than Jupiter's 12-year orbit. It orbits at an average distance of 24.800 AU. Its orbit is highly elliptical (eccentricity 0.42), swinging dramatically closer to and farther from its star.
How Was HIP 54515 b Discovered?
HIP 54515 b was discovered in 2026 using the imaging method, with observations from Subaru Telescope.
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 54515 b?
HIP 54515 b is 270.1 light-years (82.8 parsecs) from Earth. Light arriving here tonight left the planet around the year 1756. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 4,753,760 years to make the journey.
The Host Star: HIP 54515
HIP 54515
- Spectral type
- A5 V
- Surface temperature
- 8,100 K (Sun: 5,772 K)
- Mass
- 1.90 M☉
- Age
- 0.1 billion years (Sun: 4.6)
Planetary System
HIP 54515 b is the only planet known to orbit HIP 54515 so far.
HIP 54515 b — Complete Data
| Mass | 5,625.56 Earth masses (17.700 Jupiter masses) |
|---|---|
| Orbital period | 33,000.00 days |
| Orbital distance | 24.800 AU |
| Eccentricity | 0.420 |
| Distance from Earth | 270.1 light-years (82.8 parsecs) |
| Constellation | Leo |
| Discovery method | Imaging |
| Discovery facility | Subaru Telescope |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2025-12-18. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HIP 54515 b
Is HIP 54515 b habitable?
HIP 54515 b is not known to orbit within the habitable zone of HIP 54515.
How far away is HIP 54515 b?
HIP 54515 b is about 270 light-years from Earth in the constellation Leo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 4,753,760 years to get there.
How long is a year on HIP 54515 b?
One orbit around HIP 54515 takes 33,000.0 Earth days.
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