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
Columba (constellation) from Earth. Columba is the constellation at the solar antapex - the Earth (and Sun) is moving away from its direction as the solar system moves through space. The constellation contains the runaway star μ Columbae, which was probably expelled from the ι Orionis system. Exoplanet NGTS-1b and its star NGTS-1 are in Columba. There is one globular cluster in Columba, 7th-magnitude NGC 1851. It is 39,000 light-years from Earth and is resolvable in medium-sized amateur telescopes.<br> NGC 1792 is a spiral galaxy of magnitude 10.2. NGC 1808 is a Seyfert galaxy of magnitude 10.8. Columba (Chinese astronomy) Columba (constellation)