value	quality	siderealorsynodic	author	ref	method
20.7493	2	Sidereal	Durech	2023A&A...675A..24D	Model
20.7506	2	Sidereal	Durech	2018A&A...617A..57D	Model
20.7507	2	Sidereal	Martikainen	2021A&A...649A..98M	Model