OGLE-2015-BLG-1609L b
OGLE-2015-BLG-1609L b is a cold gas giant orbiting OGLE-2015-BLG-1609L in the constellation Sagittarius. It lies about 10,763 light-years from Earth and was discovered in 2025 using the microlensing method.
Is OGLE-2015-BLG-1609L b in the Habitable Zone?
The position of OGLE-2015-BLG-1609L b relative to the habitable zone of OGLE-2015-BLG-1609L cannot be precisely determined from the available orbital data.
How Was OGLE-2015-BLG-1609L b Discovered?
OGLE-2015-BLG-1609L b was discovered in 2025 using the microlensing method, with observations from OGLE.
Gravitational microlensing detects a planet when its host star passes in front of a more distant background star, and the planet's gravity adds a brief, telltale spike to the magnified starlight. It can find planets thousands of light-years away.
How Far Away Is OGLE-2015-BLG-1609L b?
OGLE-2015-BLG-1609L b is 10,763.1 light-years (3,300.0 parsecs) from Earth. Light arriving here tonight left the planet about 10,763 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 189,430,560 years to make the journey.
The Host Star: OGLE-2015-BLG-1609L
OGLE-2015-BLG-1609L
- Mass
- 0.17 M☉
Planetary System
OGLE-2015-BLG-1609L b is the only planet known to orbit OGLE-2015-BLG-1609L so far.
OGLE-2015-BLG-1609L b — Complete Data
| Mass | 76.28 Earth masses (0.240 Jupiter masses) |
|---|---|
| Distance from Earth | 10,763.1 light-years (3,300.0 parsecs) |
| Constellation | Sagittarius |
| Discovery method | Microlensing |
| Discovery facility | OGLE |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-08-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About OGLE-2015-BLG-1609L b
Is OGLE-2015-BLG-1609L b habitable?
OGLE-2015-BLG-1609L b is not known to orbit within the habitable zone of OGLE-2015-BLG-1609L, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is OGLE-2015-BLG-1609L b?
OGLE-2015-BLG-1609L b is about 10,763 light-years from Earth in the constellation Sagittarius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 189,430,560 years to get there.
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