Pi Scorpii

Encyclopedia : P : PI : PIS : Pi Scorpii

Pi Scorpii is a triple star system in the constellation Scorpius. It is approximately 459 light years from Earth.

Pi Scorpii A is a contact binary of the Beta Lyrae type. Both its members are hot, blue-white B-type dwarfs. Together they have a mean apparent magnitude of +2.89. Their rotation period is 1.57 days and they are separated by a distance of only 15 solar radii. Rotation causes their apparent magnitude to vary between +2.87 and +2.92.

They are orbited by a more distant companion designated Pi Scorpii B, which has an apparent magnitude of +12.2. This distant companion is separated from the primary binary by 50 arcseconds, putting it at least 7000 Astronomical Units away.

From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.