HIP 8541 b
HIP 8541 b is a cold gas giant orbiting HIP 8541 in the constellation Eridanus. It lies about 506 light-years from Earth and was discovered in 2016 using the radial velocity method.
Is HIP 8541 b in the Habitable Zone?
The position of HIP 8541 b relative to the habitable zone of HIP 8541 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HIP 8541 b — one full orbit around HIP 8541 — lasts 1,852.1 Earth days, longer than an Earth year. It orbits at an average distance of 3.729 AU. Its orbit is highly elliptical (eccentricity 0.36), swinging dramatically closer to and farther from its star.
How Was HIP 8541 b Discovered?
HIP 8541 b was discovered in 2016 using the radial velocity method, with observations from Multiple Observatories.
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 8541 b?
HIP 8541 b is 505.9 light-years (155.1 parsecs) from Earth. Light arriving here tonight left the planet around the year 1521. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 8,903,840 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. HIP 8541 b scores 0.35, ranking #734 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HIP 8541
HIP 8541 b belongs to a system of 2 stars; it orbits HIP 8541.
HIP 8541
- Mass
- 2.01 M☉
The HIP 8541 Planetary System
HIP 8541 b is one of 2 known planets in the HIP 8541 system. Its siblings:
- HD 11343 c (Cold Gas Giant)
HIP 8541 b — Complete Data
| Mass | 2,451.73 Earth masses (7.714 Jupiter masses) |
|---|---|
| Orbital period | 1,852.14 days |
| Orbital distance | 3.729 AU |
| Eccentricity | 0.360 |
| Earth Similarity Index | 0.35 |
| Distance from Earth | 505.9 light-years (155.1 parsecs) |
| Constellation | Eridanus |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Observatories |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2023-06-12. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HIP 8541 b
Is HIP 8541 b habitable?
HIP 8541 b is not known to orbit within the habitable zone of HIP 8541, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HIP 8541 b?
HIP 8541 b is about 506 light-years from Earth in the constellation Eridanus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 8,903,840 years to get there.
How long is a year on HIP 8541 b?
One orbit around HIP 8541 takes 1,852.1 Earth days.
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