CWISEP J193518.59-154620.3 b
CWISEP J193518.59-154620.3 b is a exoplanet orbiting the Y star CWISEP J193518.59-154620.3 in the constellation Sagittarius. It lies about 47 light-years from Earth and was discovered in 2025 using the imaging method.
Is CWISEP J193518.59-154620.3 b in the Habitable Zone?
The position of CWISEP J193518.59-154620.3 b relative to the habitable zone of CWISEP J193518.59-154620.3 cannot be precisely determined from the available orbital data.
Temperature on CWISEP J193518.59-154620.3 b
The equilibrium temperature of CWISEP J193518.59-154620.3 b is about 390 K (117 °C) — hotter than anywhere on Earth. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
CWISEP J193518.59-154620.3 b orbits at an average distance of 2.480 AU.
How Was CWISEP J193518.59-154620.3 b Discovered?
CWISEP J193518.59-154620.3 b was discovered in 2025 using the imaging method, with observations from James Webb Space Telescope (JWST).
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 CWISEP J193518.59-154620.3 b?
CWISEP J193518.59-154620.3 b is 47.1 light-years (14.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1979. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 828,960 years to make the journey.
The Host Star: CWISEP J193518.59-154620.3
CWISEP J193518.59-154620.3
- Spectral type
- Y
- Mass
- 0.02 M☉
- Age
- 5.5 billion years (Sun: 4.6)
Planetary System
CWISEP J193518.59-154620.3 b is the only planet known to orbit CWISEP J193518.59-154620.3 so far.
CWISEP J193518.59-154620.3 b — Complete Data
| Mass | 4,926.34 Earth masses (15.500 Jupiter masses) |
|---|---|
| Orbital distance | 2.480 AU |
| Equilibrium temperature | 390 K (117 °C) |
| Distance from Earth | 47.1 light-years (14.4 parsecs) |
| Constellation | Sagittarius |
| Discovery method | Imaging |
| Discovery facility | James Webb Space Telescope (JWST) |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2026-04-16. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About CWISEP J193518.59-154620.3 b
Is CWISEP J193518.59-154620.3 b habitable?
CWISEP J193518.59-154620.3 b is not known to orbit within the habitable zone of CWISEP J193518.59-154620.3.
How far away is CWISEP J193518.59-154620.3 b?
CWISEP J193518.59-154620.3 b is about 47 light-years from Earth in the constellation Sagittarius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 828,960 years to get there.
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