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Quadrans Muralis

Former constellation

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Quadrans Muralis Constellation Position on a modern map
Ultima Thulean · CC BY-SA 4.0

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Johann Elert Bode converted its name to Latin as 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) formalized its list of officially recognized constellations.

Notable features

  • 44 Boötis was the brightest star of Lalande's version of the constellation. the primary component of the system 44 Boötis A was named Quadrans by the IAU Working Group on Star Names in 2025.
  • CL Draconis was the brightest star of Bode's version of the constellation.
  • 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.

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