https://subarutelescope.org/en/results/2021/10/22/2999.htmlIn 2018, 2M0437b was first seen with the Subaru Telescope on Maunakea by UH Institute for Astronomy (IfA) visiting researcher Teruyuki Hirano (currently a researcher at the Astrobiology Center/NAOJ). For the past several years, it has been studied carefully utilizing other telescopes on the mauna.
Gaidos and his collaborators used the W. M. Keck Observatory on Maunakea to monitor the position of the host star as it moved across the sky, confirming that planet 2M0437b is truly a companion to the star, and not a more distant object. The observations required three years because the star moves slowly across the sky.
The planet and its parent star lie in a stellar "nursery" called the Taurus Cloud. 2M0437b is on a much wider orbit than the planets in the Solar System; its current separation is about one hundred times the Earth-Sun distance, making it easier to observe. However, sophisticated "adaptive" optics are still needed to compensate for the image distortion caused by Earth’s atmosphere.
Paper on arXiv :
https://arxiv.org/abs/2110.08655 
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