Astronomy:KMT-2022-BLG-0440L b
| Discovery[1] | |
|---|---|
| Discovery date | 2023 |
| Microlensing | |
| Orbital characteristics[1] | |
| 1.9±0.7 astronomical unit|AU | |
| Orbital period | 3.6 yrs |
| Star | KMT-2022-BLG-0440 |
| Physical characteristics[1] | |
| Mass | 0.0485+0.0302 −0.0223 Jupiter mass |
KMT-2022-BLG-0440L b is a Neptune-like exoplanet, located 11,415 light years away in the constellation of Sagittarius. It was discovered in 2023.[2]
Characteristics
Mass and radius
KMT-2002-BLG-0440L b was discovered by the gravitational microlensing method. This exoplanet's mass is 0.0485+0.302
−0.0223 Jupiter mass or 15.4 Earth mass. The exoplanet has a planet radius of 0.361 times that of Jupiter and its orbital radius is 1.9 AU.[2]
Orbit
KMT-2022-BLG-0440L b has a longer orbital period than Earth. The exoplanet has an orbital period of 3.6 years, just like KIC 5951458 b. KMT-2022-BLG-0440L b has a semi-major axis of 1.9±0.7 astronomical unit|AU.
Host star
The host star of KMT-2022-BLG-0440L b is KMT-2022-BLG-0440L.
The star type is currently unknown and is not visible with the unaided eye from Earth. The star has a stellar mass of 0.5300 and has 0.53+31
−26 M☉.
See also
- List of exoplanets
- List of exoplanets discovered in 2023
- Gravitational microlensing
References
- ↑ 1.0 1.1 1.2 Zhang, Jiyuan et al. (2023), "KMT-2022-BLG-0440Lb: A new q < 10−4 microlensing planet with the central-resonant caustic degeneracy broken", Monthly Notices of the Royal Astronomical Society 522 (4): 6055–6069, doi:10.1093/mnras/stad1398
- ↑ 2.0 2.1 "The Extrasolar Planet Encyclopaedia — KMT-2022-BLG-0440L b". Extrasolar Planets Encyclopaedia. 1995. https://exoplanet.eu/catalog/kmt_2022_blg_0440l_b--8582/.
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