Best Eclipsing Binary

Spica is the brightest star in Virgo, a binary system of two close blue giants about 250 light-years away whose mutual gravity distorts both stars.

A supergiant eclipsing binary in Auriga that undergoes a two-year-long eclipse every 27 years, with the eclipsing body identified as a large opaque disk.

An eclipsing binary in Cepheus pairing one of the largest known red supergiants with a hot blue companion, with an orbital period of about 20 years.

Alphecca (Alpha Coronae Borealis) is the brightest star in the small arc-shaped constellation Corona Borealis, a spectroscopic binary about 75 light-years away.

Eta Ophiuchi, the second-brightest star in Ophiuchus, a binary system of two white A-type stars with an orbital period of roughly 88 years, located about 88 light-years away.