HIP 65426 b
HIP 65426 b is a hot Jupiter orbiting the A2 V star HIP 65426 in the constellation Centaurus. It lies about 355 light-years from Earth and was discovered in 2017 using the imaging method.
How Big Is HIP 65426 b?
HIP 65426 b has a radius of 16.81 times that of Earth, or 1.50 times the radius of Jupiter. Its mass is 2,860 times that of Earth.
Is HIP 65426 b in the Habitable Zone?
The position of HIP 65426 b relative to the habitable zone of HIP 65426 cannot be precisely determined from the available orbital data.
Temperature on HIP 65426 b
The equilibrium temperature of HIP 65426 b is about 1,500 K (1,227 °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
HIP 65426 b orbits at an average distance of 92.000 AU.
How Was HIP 65426 b Discovered?
HIP 65426 b was discovered in 2017 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 65426 b?
HIP 65426 b is 355.1 light-years (108.9 parsecs) from Earth. Light arriving here tonight left the planet around the year 1671. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 6,249,760 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 65426 b scores 0.06, ranking #5,207 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HIP 65426
HIP 65426
- Spectral type
- A2 V
- Surface temperature
- 8,840 K (Sun: 5,772 K)
- Mass
- 1.96 M☉
- Radius
- 1.77 R☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
HIP 65426 b is the only planet known to orbit HIP 65426 so far.
HIP 65426 b — Complete Data
| Radius | 16.814 Earth radii (1.500 Jupiter radii) |
|---|---|
| Mass | 2,860.47 Earth masses (9.000 Jupiter masses) |
| Orbital distance | 92.000 AU |
| Equilibrium temperature | 1,500 K (1,227 °C) |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 355.1 light-years (108.9 parsecs) |
| Constellation | Centaurus |
| Discovery method | Imaging |
| Discovery facility | Paranal Observatory |
| Discovery year | 2017 |
Data: NASA Exoplanet Archive, last updated 2017-07-11. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HIP 65426 b
Is HIP 65426 b habitable?
HIP 65426 b is not known to orbit within the habitable zone of HIP 65426, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is HIP 65426 b?
HIP 65426 b is about 355 light-years from Earth in the constellation Centaurus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 6,249,760 years to get there.
How big is HIP 65426 b compared to Earth?
HIP 65426 b has 16.81 times the radius of Earth and about 2,860 times its mass.
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