BP Boötis [SEP] constellation
BP Boötis
BP Boötis is an Alpha² Canum Venaticorum variable star in the constellation Boötes. It varies by 0.02 magnitude over 1.3 days.
Quadrans Muralis" and shrank the constellation a little in his 1801 "Uranographia" star atlas, to avoid it clashing with neighboring constellations.
In 1922, Quadrans Muralis was omitted when the International Astronomical Union (IAU) formalised its list of officially recognized constellations.
Notable features.
- The variable star BP Boötis was a member of the constellation.
- 39 Boötis is a double star that was transferred by Lalande into Quadrans.
- The Quadrantid meteor shower is still named after the obsolete constellation.