![The movement of exoplanet AF Lep b, identified in the white spot near the arrows, in images captured in December 2021 and February 2023](https://english.tachyonbeam.com/wp-content/uploads/sites/2/2023/06/AF-Lep-b-Direct-Images.jpg)
The discovery of the exoplanet AF Lep b shows the usefulness of the astrometric technique
An article published in “Astrophysical Journal Letters” reports the role of the astrometric technique in the discovery of one of the least massive planets so far photographed directly. A team of researchers used the Keck II telescope at the Keck Observatory in Hawaii to photograph the exoplanet cataloged AF Lep b, among the first discovered using the technique of astrometry, which is usually used in conjunction with other astronomical investigation methods. This offers new perspectives in the search for exoplanets.