KOINTREAU-1 b
KOINTREAU-1 b is a cold gas giant orbiting the M4 star XEST 17-036 in the constellation Taurus. It lies about 517 light-years from Earth and was discovered in 2026 using the imaging method.
Is KOINTREAU-1 b in the Habitable Zone?
The position of KOINTREAU-1 b relative to the habitable zone of XEST 17-036 cannot be precisely determined from the available orbital data.
Orbit and Year Length
KOINTREAU-1 b orbits at an average distance of 690.000 AU.
How Was KOINTREAU-1 b Discovered?
KOINTREAU-1 b was discovered in 2026 using the imaging method, with observations from W. M. Keck 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 KOINTREAU-1 b?
KOINTREAU-1 b is 517.3 light-years (158.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1509. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 9,104,480 years to make the journey.
The Host Star: XEST 17-036
XEST 17-036
- Spectral type
- M4
- Surface temperature
- 3,551 K (Sun: 5,772 K)
- Mass
- 0.26 M☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
KOINTREAU-1 b is the only planet known to orbit XEST 17-036 so far.
KOINTREAU-1 b — Complete Data
| Mass | 3,368.98 Earth masses (10.600 Jupiter masses) |
|---|---|
| Orbital distance | 690.000 AU |
| Distance from Earth | 517.3 light-years (158.6 parsecs) |
| Constellation | Taurus |
| Discovery method | Imaging |
| Discovery facility | W. M. Keck Observatory |
| Discovery year | 2026 |
Data: NASA Exoplanet Archive, last updated 2026-02-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About KOINTREAU-1 b
Is KOINTREAU-1 b habitable?
KOINTREAU-1 b is not known to orbit within the habitable zone of XEST 17-036, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is KOINTREAU-1 b?
KOINTREAU-1 b is about 517 light-years from Earth in the constellation Taurus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 9,104,480 years to get there.
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