See this official press release:
https://news.ricoh-imaging.co.jp/rim_info/2022/20220311_031667.html
This Pentax lens was chosen because of its full metal barrel construction as well as its high resolution but yet compact size. By the way, the lens contributes to almost half of the size of the Japanese mini-satellite named "Kitsune", which was launched to the space via an US rocket in February this year.
