Beta Boötis the ROSAT satellite was used to observe an X-ray flare on Beta Boötis, which released an estimated . This was the first such observation for a low-activity star of this type. The flare may be explained by an as yet unobserved M-type dwarf companion star. Beta Boötis Beta Boötis (β Boötis, abbreviated Beta Boo, β Boo), also named Nekkar, is a star in the northern constellation of Boötes. It has an apparent visual magnitude of 3.5, making it one of the brighter members of the constellation. In the modern constellation, it marks the head of Boötis the herdsman. Based upon
Aquila (constellation) and the people of Pukapuka called Altair "Turu" and used it as a navigational star. The Māori people named Altair "Poutu-te-rangi", "Pillar of the Sky", because of its important position in their cosmology. It was used differently in different Māori calendars, being the star of February and March in one version and March and April in the other. Altair was also the star that ruled the annual sweet potato harvest. Two United States Navy ships, USS" Aquila" (AK-47) and USS "Aquila" (PHM-4), are named after the constellation. Aquila (constellation) Aquila is a constellation on the celestial equator. Its name is