WISPIT 2 b
WISPIT 2 b is a cold gas giant orbiting WISPIT 2 in the constellation Aquila. It lies about 440 light-years from Earth and was discovered in 2025 using the imaging method.
Is WISPIT 2 b in the Habitable Zone?
WISPIT 2 b orbits beyond the outer edge of the habitable zone of WISPIT 2. At that distance, any surface water would almost certainly be frozen.
Habitable zone of WISPIT 2: 0.671–1.665 AU (conservative: 0.850–1.579 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Orbit and Year Length
WISPIT 2 b orbits at an average distance of 57.000 AU.
How Was WISPIT 2 b Discovered?
WISPIT 2 b was discovered in 2025 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 WISPIT 2 b?
WISPIT 2 b is 440.0 light-years (134.9 parsecs) from Earth. Light arriving here tonight left the planet around the year 1586. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 7,744,000 years to make the journey.
The Host Star: WISPIT 2
WISPIT 2
- Surface temperature
- 4,400 K (Sun: 5,772 K)
- Mass
- 1.08 M☉
- Radius
- 1.42 R☉
- Luminosity
- 0.6990 L☉
- Age
- 0.0 billion years (Sun: 4.6)
The WISPIT 2 Planetary System
WISPIT 2 b is one of 2 known planets in the WISPIT 2 system. Its siblings:
- WISPIT 2 c (Hot Jupiter)
WISPIT 2 b — Complete Data
| Mass | 1,541.47 Earth masses (4.850 Jupiter masses) |
|---|---|
| Orbital distance | 57.000 AU |
| Distance from Earth | 440.0 light-years (134.9 parsecs) |
| Constellation | Aquila |
| Discovery method | Imaging |
| Discovery facility | Paranal Observatory |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-09-17. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WISPIT 2 b
Is WISPIT 2 b habitable?
No — WISPIT 2 b orbits outside the habitable zone of WISPIT 2 and is likely too cold for liquid water on its surface.
How far away is WISPIT 2 b?
WISPIT 2 b is about 440 light-years from Earth in the constellation Aquila. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 7,744,000 years to get there.
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