[7] WASP-80 could be similar to the Sun in concentration of heavy elements, although this measurement is highly uncertain.
[6] The star was named Petra in 2019 by Jordanian amateur astronomers as part of the NameExoWorlds contest.
[8] Three multiplicity surveys in 2015-2018 did not detect any stellar companions to WASP-80, but a survey in 2020 detected a 0.07M☉ companion candidate at an angular separation 2.132±0.010 arcseconds, with a false alarm probability of 3%.
[9] In 2013 a transiting hot Jupiter planet WASP-80 b was detected on a tight, circular orbit.
[4] Although one transmission spectrum of the planetary atmosphere showed signs of ionised potassium,[12] another measurement in 2017 yielded a gray and featureless spectrum, probably due to a high cloud deck[13] or haze[14] in the atmosphere of WASP-80b.