Struve 1904: A Nice Double Star in Virgo

The author explores the galaxies in the Virgo constellation, focusing on the double star STF 1904, discovered by Friedrich Struve in 1823. Comprising a subgiant primary and a main-sequence secondary star, they are 247 light years from Earth. Observations made in Seattle reveal their distinct separation and brightness.

Also known as: SAO 120822, HD 133408, HR 5610, HIP 73716, STF 1904

Struve 1835: A Double Star of Brilliant White and Deep Yellow in Boötes

Struve 1835 is an attractive double star in the northern constellation of Boötes. It’s best viewed during the springtime. Observers can view this binary with its white and deep yellow companion using a small telescope, even from the suburbs. The binary is also known as SAO 120426, HD 126129, HR 5386.

12 Comae Berenices: A Bright Double Star Greets You in Coma Berenices

12 Comae Berenices is a pretty double star in the northern constellation of Coma Berenices. At a magnitude around +4.8, backyard astronomers can enjoy this bright binary on spring nights.

Struve 1678: A Light Yellow Double of Equal Brightness in Coma Berenices

Struve 1678 (STF 1678) is a double star of nearly equal brightness in the constellation Coma Berenices, best viewed on spring nights. The binary stars are wide apart at 37 arc seconds, making it an easier target. This double is also known as SAO 100235 or HIP 62249.