OGLE-2017-BLG-0173L b
OGLE-2017-BLG-0173L b is a super-Earth orbiting OGLE-2017-BLG-0173L in the constellation Sagittarius. It lies about 15,346 light-years from Earth and was discovered in 2018 using the microlensing method.
Is OGLE-2017-BLG-0173L b in the Habitable Zone?
The position of OGLE-2017-BLG-0173L b relative to the habitable zone of OGLE-2017-BLG-0173L cannot be precisely determined from the available orbital data.
Orbit and Year Length
OGLE-2017-BLG-0173L b orbits at an average distance of 3.913 AU.
How Was OGLE-2017-BLG-0173L b Discovered?
OGLE-2017-BLG-0173L b was discovered in 2018 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-2017-BLG-0173L b?
OGLE-2017-BLG-0173L b is 15,345.6 light-years (4,705.0 parsecs) from Earth. Light arriving here tonight left the planet about 15,346 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 270,082,560 years to make the journey.
The Host Star: OGLE-2017-BLG-0173L
OGLE-2017-BLG-0173L
- Mass
- 0.40 M☉
Planetary System
OGLE-2017-BLG-0173L b is the only planet known to orbit OGLE-2017-BLG-0173L so far.
OGLE-2017-BLG-0173L b — Complete Data
| Mass | 3.27 Earth masses (0.010 Jupiter masses) |
|---|---|
| Orbital distance | 3.913 AU |
| Distance from Earth | 15,345.6 light-years (4,705.0 parsecs) |
| Constellation | Sagittarius |
| Discovery method | Microlensing |
| Discovery facility | OGLE |
| Discovery year | 2018 |
Data: NASA Exoplanet Archive, last updated 2019-12-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About OGLE-2017-BLG-0173L b
Is OGLE-2017-BLG-0173L b habitable?
OGLE-2017-BLG-0173L b is not known to orbit within the habitable zone of OGLE-2017-BLG-0173L, and as a super-Earth it is an unlikely candidate for life as we know it.
How far away is OGLE-2017-BLG-0173L b?
OGLE-2017-BLG-0173L b is about 15,346 light-years from Earth in the constellation Sagittarius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 270,082,560 years to get there.
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