- Messier 73 (M73, also known as NGC 6994) is an asterism of four stars in the constellation Aquarius which was long thought to be a small open cluster. It lies several arcminutes east of globular cluster M72. According to Gaia EDR3, the stars are 1030±9, 1249±10, 2170±22, and 2290±24 light-years from the Sun, with the second being a binary star.
- Alphard (stars.astro.illinois.edu)
ALPHARD (Alpha Hydrae). Not all that well known among bright stars, but surprisingly prominent, Alphard both dominates and lies at the heart of the relatively dim constellation Hydra, the Water Serpent (the longest constellation of the sky), hence clearly deserves to be Bayer’s Alpha star.