MOA-2011-BLG-291L b
MOA-2011-BLG-291L b is a Neptune-like planet orbiting MOA-2011-BLG-291L in the constellation Sagittarius. It lies about 14,351 light-years from Earth and was discovered in 2018 using the microlensing method.
Is MOA-2011-BLG-291L b in the Habitable Zone?
The position of MOA-2011-BLG-291L b relative to the habitable zone of MOA-2011-BLG-291L cannot be precisely determined from the available orbital data.
Orbit and Year Length
MOA-2011-BLG-291L b orbits at an average distance of 0.690 AU — comparable to the inner Solar System.
How Was MOA-2011-BLG-291L b Discovered?
MOA-2011-BLG-291L b was discovered in 2018 using the microlensing method, with observations from MOA.
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 MOA-2011-BLG-291L b?
MOA-2011-BLG-291L b is 14,350.9 light-years (4,400.0 parsecs) from Earth. Light arriving here tonight left the planet about 14,351 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 252,575,840 years to make the journey.
The Host Star: MOA-2011-BLG-291L
MOA-2011-BLG-291L
- Mass
- 0.15 M☉
Planetary System
MOA-2011-BLG-291L b is the only planet known to orbit MOA-2011-BLG-291L so far.
MOA-2011-BLG-291L b — Complete Data
| Mass | 18.00 Earth masses (0.057 Jupiter masses) |
|---|---|
| Orbital distance | 0.690 AU |
| Distance from Earth | 14,350.9 light-years (4,400.0 parsecs) |
| Constellation | Sagittarius |
| Discovery method | Microlensing |
| Discovery facility | MOA |
| Discovery year | 2018 |
Data: NASA Exoplanet Archive, last updated 2019-12-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About MOA-2011-BLG-291L b
Is MOA-2011-BLG-291L b habitable?
MOA-2011-BLG-291L b is not known to orbit within the habitable zone of MOA-2011-BLG-291L, and as a Neptune-like planet it is an unlikely candidate for life as we know it.
How far away is MOA-2011-BLG-291L b?
MOA-2011-BLG-291L b is about 14,351 light-years from Earth in the constellation Sagittarius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 252,575,840 years to get there.
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