czsky/en/star/hr2777.md

622 B

name constellation created_by created_date updated_by updated_date
Wasat (δ Gem) Gem 8mag 2022-01-21 17:00:00 skybber 2022-02-06 11:14:36.959097

a binary star distinguishable with a small telescope. The main star has a brightness of 3.5mag and the companion 8.2mag, with an orbital period of about 1,200 years. In 1985, the companion was 6" away from the main star, so it could be observed with a telescope with a 6 cm diameter objective lens. By 2000, their mutual distance had been reduced to 5.8". Even so, this is no problem for a 200 mm telescope, in which we can see their yellow or light blue color.