KMT-2018-BLG-1990L b
KMT-2018-BLG-1990L b is a cold gas giant orbiting the M star KMT-2018-BLG-1990L in the constellation Sagittarius. It lies about 3,154 light-years from Earth and was discovered in 2019 using the microlensing method.
Is KMT-2018-BLG-1990L b in the Habitable Zone?
The position of KMT-2018-BLG-1990L b relative to the habitable zone of KMT-2018-BLG-1990L cannot be precisely determined from the available orbital data.
Orbit and Year Length
KMT-2018-BLG-1990L b orbits at an average distance of 0.763 AU — comparable to the inner Solar System.
How Was KMT-2018-BLG-1990L b Discovered?
KMT-2018-BLG-1990L b was discovered in 2019 using the microlensing method, with observations from KMTNet.
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 KMT-2018-BLG-1990L b?
KMT-2018-BLG-1990L b is 3,153.9 light-years (967.0 parsecs) from Earth. Light arriving here tonight left the planet about 3,154 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 55,508,640 years to make the journey.
The Host Star: KMT-2018-BLG-1990L
KMT-2018-BLG-1990L
- Spectral type
- M
- Mass
- 0.09 M☉
Planetary System
KMT-2018-BLG-1990L b is the only planet known to orbit KMT-2018-BLG-1990L so far.
KMT-2018-BLG-1990L b — Complete Data
| Mass | 111.00 Earth masses (0.348 Jupiter masses) |
|---|---|
| Orbital distance | 0.763 AU |
| Distance from Earth | 3,153.9 light-years (967.0 parsecs) |
| Constellation | Sagittarius |
| Discovery method | Microlensing |
| Discovery facility | KMTNet |
| Discovery year | 2019 |
Data: NASA Exoplanet Archive, last updated 2019-12-05. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About KMT-2018-BLG-1990L b
Is KMT-2018-BLG-1990L b habitable?
KMT-2018-BLG-1990L b is not known to orbit within the habitable zone of KMT-2018-BLG-1990L, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is KMT-2018-BLG-1990L b?
KMT-2018-BLG-1990L b is about 3,154 light-years from Earth in the constellation Sagittarius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 55,508,640 years to get there.
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