| 释义 |
- Notable features
- References
Quadrans Muralis (Latin for mural quadrant) was a constellation created by the French astronomer Jérôme Lalande in 1795. It depicted a wall-mounted quadrant with which he and his nephew Michel Lefrançois de Lalande had charted the celestial sphere, and was named Le Mural in the French atlas.[ It was between the constellations of Boötes and Draco, near the tail of Ursa Major,[2] containing stars between β Bootis and η Ursae Majoris (Alkaid).[3]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) formalised its list of officially recognized constellations.[5] 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.[6]
- The Quadrantid meteor shower is still named after the obsolete constellation.
References1. ^1 {{cite web| url= http://www.ianridpath.com/startales/quadranslalande.htm | title=Lalande’s Quadrans Muralis | work= Star Tales |author=Ridpath, Ian|publisher=Self-published | accessdate= 25 March 2016}}
2. ^1 {{cite book | author=Inglis, Mike; Moore, Patrick | date=2015 | title=The Observer's Year: 366 Nights of the Universe: 2015 – 2020 | page=178 | url=https://books.google.com.au/books?id=23uBCgAAQBAJ&pg=PA178| publisher=Springer |location=New York, New York | isbn=978-3-31918-678-8}}
3. ^1 {{cite web |url=http://www.iau.org/public/themes/constellations/ |title=The Constellations |publisher=International Astronomical Union |accessdate=2018-01-12}}
4. ^1 {{cite book|last=Smyth|first=William Henry |title=A Cycle of Celestial Objects: For the Use of Naval, Military, and Private Astronomers|publisher=John W. Parker|location=London, United Kingdom|date=1844|volume=2|pages=329|url=https://books.google.com.au/books?id=HnHvAAAAMAAJ&pg=PA329&lpg=PA329&dq=%22Quadrans+Muralis%22+bootis&source=bl&ots=2OwNT6jEam&sig=7jkes3uTcnlS8kuRZNWBlEcw0X0&hl=en&sa=X&ved=0ahUKEwil7Y7Tld7LAhWGlJQKHQ-dAjc4KBDoAQgnMAM#v=onepage&q=%22Quadrans%20Muralis%22%20bootis&f=false}}
}}{{clear}}{{navconstel-historic}}{{astronomy-stub}} 1 : Former constellations |