M45, the Pleiades, is an open star cluster in the constellation Taurus, known since antiquity and cataloged by Charles Messier in 1757. It’s an asterism of over 1,000 young hot B-type stars loosely bound by gravity, spanning 110 arcminutes and surrounded by reflection nebulae.

Apparent magnitude is 1.6. Distance from Earth is 444 light-years. Alternate names include Seven Sisters and Subaru (Japanese).

9 Cygni is a binary star system in the constellation Cygnus, consisting of a G8 IIIa red clump giant as the primary and an A2 V main-sequence as the secondary. Both are approximately 437 million years old. The primary fuses helium in its core, while the secondary is evolving off the main sequence. There is a combined apparent magnitude is 5.39.

The primary has 2.9 solar masses, a radius of 18.2 solar radii, and surface temperature of 8,625°F.

The secondary has 2.7 solar masses, radius of 3.5 solar radii, and surface temperature of 16,185°F.

The average distance from Earth is 594 light-years. Alternate names include HD 184759 (primary), HD 184760 (secondary), HIP 96302, and HR 7441.

M26, also known as NGC 6694, is an open star cluster in the constellation Scutum, discovered in 1765. It’s a loose grouping of about 25 bright stars spanning 8 arcminutes, located in the Scutum Star Cloud. Apparent magnitude is 8.0. Distance from Earth is 5,000 light-years.