HD 137366 is a solitary blue-hued star located in the southern circumpolar constellation Apus.
It has an apparent magnitude of 6.38,[2] placing it near the limit for naked eye visibility, even under ideal conditions.
The object is located relatively far at a distance of approximately 1,100 light-years based on Gaia DR3 parallax measurements,[1] but its heliocentric radial velocity is not known.
[4] HD 137366 has a stellar classification of B3 V,[3] indicating that it is an ordinary B-type main-sequence star that is generating energy via hydrogen fusion at its core.
[5] Unlike most hot stars, HD 137366 has a relatively low projected rotational velocity of only 8 km/s.