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
Herdsman Lake was rescued and placed on one of the islands. Walking, cycling, picnicking, bird watching and wildflower spotting are popular activities in the park. Disabled access is provided. Herdsman Lake Herdsman Lake, also known as Herdsmans Lake, is a freshwater lake located on the Swan Coastal Plain, north-west of , Western Australia, in the suburb of Herdsman. The lake is encompassed by Herdsman Lake Regional Park. It measures in length, and in width, totaling over . The perimeter of lake is dredged to provide permanent open water, 15% of the area, during the dry summer months. The lake is a wildlife