KMT-2024-BLG-0404L b
KMT-2024-BLG-0404L b is a exoplanet orbiting the M star KMT-2024-BLG-0404L in the constellation Sagittarius. It lies about 23,516 light-years from Earth and was discovered in 2025 using the microlensing method.
Is KMT-2024-BLG-0404L b in the Habitable Zone?
The position of KMT-2024-BLG-0404L b relative to the habitable zone of KMT-2024-BLG-0404L cannot be precisely determined from the available orbital data.
Orbit and Year Length
KMT-2024-BLG-0404L b orbits at an average distance of 0.850 AU — comparable to the inner Solar System.
How Was KMT-2024-BLG-0404L b Discovered?
KMT-2024-BLG-0404L b was discovered in 2025 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-2024-BLG-0404L b?
KMT-2024-BLG-0404L b is 23,515.8 light-years (7,210.0 parsecs) from Earth. Light arriving here tonight left the planet about 23,516 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 413,878,080 years to make the journey.
The Host Star: KMT-2024-BLG-0404L
KMT-2024-BLG-0404L
- Spectral type
- M
- Mass
- 0.09 M☉
The KMT-2024-BLG-0404L Planetary System
KMT-2024-BLG-0404L b is one of 2 known planets in the KMT-2024-BLG-0404L system. Its siblings:
- KMT-2024-BLG-0404L c (Neptune-like)
KMT-2024-BLG-0404L b — Complete Data
| Mass | 8,657.65 Earth masses (27.240 Jupiter masses) |
|---|---|
| Orbital distance | 0.850 AU |
| Distance from Earth | 23,515.8 light-years (7,210.0 parsecs) |
| Constellation | Sagittarius |
| Discovery method | Microlensing |
| Discovery facility | KMTNet |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-10-02. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About KMT-2024-BLG-0404L b
Is KMT-2024-BLG-0404L b habitable?
KMT-2024-BLG-0404L b is not known to orbit within the habitable zone of KMT-2024-BLG-0404L.
How far away is KMT-2024-BLG-0404L b?
KMT-2024-BLG-0404L b is about 23,516 light-years from Earth in the constellation Sagittarius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 413,878,080 years to get there.
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