Eta Sagittae

Eta Sagittae (η Sagittae) is solitary star in the northern constellation of Sagitta. It is faintly visible to the naked eye, having an apparent visual magnitude of +5.09. Based upon an annual parallax shift of $29.962$, it is approximately $80.44$ distant from the Sun. There is a 61.1% chance that it is a member of the Hyades-Pleiades stream of stars that share a common motion through space.

This is an evolved K-type giant star with a stellar classification of K2 III. At the age of about 1.7 billion years, it is now a red clump star that is generating energy through the fusion of helium at its core. Eta Sagittae has 1.7 times the mass of the Sun and has expanded to seven times the Sun's radius. It is radiating 25.7 times the Sun's luminosity from its photosphere at an effective temperature of $1.73$.