Quadrans Muralis - Revision history

Sushoff at 15:53, 20 January 2026

2026-01-20T15:53:23Z

← Older revision		Revision as of 15:53, 20 January 2026
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			Authors: {{PAGEAUTHORS}}
			----
	[[File:Quadrantiden Stellarium2025 starsTo6.5mag.jpg\|alt=star chart\|thumb\|The radiant of the Quadrantids meteor shower displayed in Stellarium (2025) with stars only shown brighter than 6.5 mag. The star closest to the current radiant is marked.]]		[[File:Quadrantiden Stellarium2025 starsTo6.5mag.jpg\|alt=star chart\|thumb\|The radiant of the Quadrantids meteor shower displayed in Stellarium (2025) with stars only shown brighter than 6.5 mag. The star closest to the current radiant is marked.]]
	[[File:Quadransstellarium.jpg\|thumb\|Lalande's initial image of Quadrans mapped to Stellarium (Susanne M Hoffmann).]]		[[File:Quadransstellarium.jpg\|thumb\|Lalande's initial image of Quadrans mapped to Stellarium (Susanne M Hoffmann).]]

Sushoff: /* Depictions in Atlases */

2025-06-08T07:47:25Z

Depictions in Atlases

← Older revision		Revision as of 07:47, 8 June 2025
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	File:Bode1801 s Quadrans.jpg\|Bode 1801 Uranographia, Quadrans as a neighbouring detail next to Draco		File:Bode1801 s Quadrans.jpg\|Bode 1801 Uranographia, Quadrans as a neighbouring detail next to Draco
	File:Quadrans Muralis.jpg\|Bode's (1801), Quadrans Muralis in ''Uranographia'', Johann E. Bode. This file is from Wikimedia Commons and may be used by other projects		File:Quadrans Muralis.jpg\|Bode's (1801), Quadrans Muralis in ''Uranographia'', Johann E. Bode. This file is from Wikimedia Commons and may be used by other projects
			File:Young1807 Quadrans.JPG\|Quadrans Muralis in Young (1807): A Course of Lectures on Natural Philosophy and the Mechanical Arts.
	File:Alexander Jamieson Celestial Atlas-Plate 7 - restoration - crop.jpg\|Quadrans in Alexander Jamieson (1822), Plate 7 from ''A Celestial Atlas comprising a systematic display of the heavens in a series of thirty maps illustrated by scientific description of their contents and accompanied by catalogues of the stars and astronomical exercises''		File:Alexander Jamieson Celestial Atlas-Plate 7 - restoration - crop.jpg\|Quadrans in Alexander Jamieson (1822), Plate 7 from ''A Celestial Atlas comprising a systematic display of the heavens in a series of thirty maps illustrated by scientific description of their contents and accompanied by catalogues of the stars and astronomical exercises''
	File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, Urania's Mirror (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.		File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, Urania's Mirror (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.

Sushoff: link to star name added

2025-02-21T10:25:04Z

link to star name added

← Older revision		Revision as of 10:25, 21 February 2025
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	== IAU WGSN Name Discussion ==		== IAU WGSN Name Discussion ==
	In 2023 and 2025, it was suggested to use a name related to this obsolete historical constellation. The terms "Quadrans" or "Muralis" could be used to name a star in the area of this historical constellation; the first term makes more sense with regard to its reminiscence in the name of the meteor shower.		In 2023 and 2025, it was suggested to use a name related to this obsolete historical constellation. The terms "[[Quadrans]]" or "Muralis" could be used to name a star in the area of this historical constellation; the first term makes more sense with regard to its reminiscence in the name of the meteor shower.

	==Weblinks==		==Weblinks==

Sushoff at 10:24, 21 February 2025

2025-02-21T10:24:07Z

← Older revision		Revision as of 10:24, 21 February 2025
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	Alexander Jamieson and Sidney Hall in the subsequent decades also depicted Quadrans together with Bootes.		Alexander Jamieson and Sidney Hall in the subsequent decades also depicted Quadrans together with Bootes.

			=== Brightest Stars ===
			The brightest stars in the vicinity of Quadrans Muralis, in order of brightness are:

			# 44 Boo (HR 5618, HD 133640; V=4.76)
			# CL Dra (HR 5960, HD 143466; V=4.95)
			# BP Boo (HR 5857, HD 140728; V=5.51)
			# 47 Boo (HR 5627, HD 133962; V=5.57)
			# 39 Boo (HR 5538, HD 131041; V=5.69)
			# HR 5830 (HR 5830, HD 139798; V=5.75)
			# X Her (HD 144205; V=6.58).

	===Transfer and Transformation of the Constellation===		===Transfer and Transformation of the Constellation===

Sushoff: /* IAU WGSN Name Discussion */ transferred the section about stars for name discussion to "Quadrans" (new entry)

2025-02-21T10:22:51Z

IAU WGSN Name Discussion: transferred the section about stars for name discussion to "Quadrans" (new entry)

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 == IAU WGSN Name Discussion ==
 In 2023 and 2025, it was suggested to use a name related to this obsolete historical constellation. The terms "Quadrans" or "Muralis" could be used to name a star in the area of this historical constellation; the first term makes more sense with regard to its reminiscence in the name of the meteor shower.
 ==Weblinks==

Sushoff: animated GIF added with the brightest stars marked

2025-02-21T08:48:29Z

animated GIF added with the brightest stars marked

← Older revision		Revision as of 08:48, 21 February 2025
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	File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, Urania's Mirror (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.		File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, Urania's Mirror (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.
	File:Quadransstellarium.jpg\|Lalande's initial image of Quadrans mapped to Stellarium (Susanne M Hoffmann).		File:Quadransstellarium.jpg\|Lalande's initial image of Quadrans mapped to Stellarium (Susanne M Hoffmann).
			File:Quadrans stellarium1795 GIF.gif\|Lalande's Quadrans on Stellarium with the three brightest stars marked (Susanne M Hoffmann 2025).
	</gallery>		</gallery>

Sushoff: /* Transfer and Transformation of the Constellation */

2025-02-21T08:01:07Z

Transfer and Transformation of the Constellation

← Older revision		Revision as of 08:01, 21 February 2025
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	File:Quadrans Muralis.jpg\|Bode's (1801), Quadrans Muralis in ''Uranographia'', Johann E. Bode. This file is from Wikimedia Commons and may be used by other projects		File:Quadrans Muralis.jpg\|Bode's (1801), Quadrans Muralis in ''Uranographia'', Johann E. Bode. This file is from Wikimedia Commons and may be used by other projects
	File:Alexander Jamieson Celestial Atlas-Plate 7 - restoration - crop.jpg\|Quadrans in Alexander Jamieson (1822), Plate 7 from ''A Celestial Atlas comprising a systematic display of the heavens in a series of thirty maps illustrated by scientific description of their contents and accompanied by catalogues of the stars and astronomical exercises''		File:Alexander Jamieson Celestial Atlas-Plate 7 - restoration - crop.jpg\|Quadrans in Alexander Jamieson (1822), Plate 7 from ''A Celestial Atlas comprising a systematic display of the heavens in a series of thirty maps illustrated by scientific description of their contents and accompanied by catalogues of the stars and astronomical exercises''
	File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, ''Urania's Mirror'' (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.		File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, Urania's Mirror (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.
	File:~~Quadrans muralis map~~.~~png~~\|~~Map~~ of ~~the ancient constellation '''~~Quadrans ~~Muralis.''' Created by CWitte with PP3~~ (~~PP3's homepage~~) ~~byTorsten Bronger. This file is from Wikimedia Commons and may be used by other projects~~.		File:Quadransstellarium.jpg\|Lalande's initial image of Quadrans mapped to Stellarium (Susanne M Hoffmann).
	</gallery>		</gallery>

Sushoff: animated GIF and mapped historical map added

2025-02-21T08:00:03Z

animated GIF and mapped historical map added

← Older revision		Revision as of 08:00, 21 February 2025
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	[[File:Quadrantiden Stellarium2025 starsTo6.5mag.jpg\|alt=star chart\|thumb\|The radiant of the Quadrantids meteor shower displayed in Stellarium (2025) with stars only shown brighter than 6.5 mag. The star closest to the current radiant is marked.]]		[[File:Quadrantiden Stellarium2025 starsTo6.5mag.jpg\|alt=star chart\|thumb\|The radiant of the Quadrantids meteor shower displayed in Stellarium (2025) with stars only shown brighter than 6.5 mag. The star closest to the current radiant is marked.]]
			[[File:Quadransstellarium.jpg\|thumb\|Lalande's initial image of Quadrans mapped to Stellarium (Susanne M Hoffmann).]]
	This is one of the obsolete constellations from Early Modern Europe. The term is Latin and means "wall-mounted quadrant", a large astronomical instrument fixed to a wall. The constellation is still in common memory of meteor observers as a rich meteor shower that peaks in the first days of January are known as the Quadrantids. Their apparent point of origin, the radiant, is in the area where historically this constellation used to be defined.		This is one of the obsolete constellations from Early Modern Europe. The term is Latin and means "wall-mounted quadrant", a large astronomical instrument fixed to a wall. The constellation is still in common memory of meteor observers as a rich meteor shower that peaks in the first days of January are known as the Quadrantids. Their apparent point of origin, the radiant, is in the area where historically this constellation used to be defined.

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	File:Quadrans Bode1805 Boo.jpg\|Bode's 1805 edition of his Bootes-star chart in ''Anleitung zur Kenntniß des gestirnten Himmels'' (labelling in German).		File:Quadrans Bode1805 Boo.jpg\|Bode's 1805 edition of his Bootes-star chart in ''Anleitung zur Kenntniß des gestirnten Himmels'' (labelling in German).
	File:QuadransNo Bode1805 Dra.jpg\|Bode's 1805 edition of ''Anleitung zur Kenntniß des gestirnten Himmels'' with the star chart of Draco still without Quadrans.		File:QuadransNo Bode1805 Dra.jpg\|Bode's 1805 edition of ''Anleitung zur Kenntniß des gestirnten Himmels'' with the star chart of Draco still without Quadrans.
			File:Quadrans stellarium.gif\|Lalande's initial map of Quadrans mapped to Stellarium (Susanne M Hoffmann 2025).
	</gallery>		</gallery>

Ericmamajek: /* IAU WGSN Name Discussion */

2025-02-02T06:05:47Z

IAU WGSN Name Discussion

← Older revision		Revision as of 06:05, 2 February 2025
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	The two brightest stars are notable bright stars in the solar neighborhood: 44 Boo (d = 13 parsecs) and CL Dra (d = 34 parsecs).		The two brightest stars are notable bright stars in the solar neighborhood: 44 Boo (d = 13 parsecs) and CL Dra (d = 34 parsecs).

	~~One proposal~~ is ~~to name the V~~=4.~~95 mag-star CL Dra for which [https://simbad~~.~~u-strasbg~~.~~fr/simbad/sim-id?Ident=~~CL+Dra~~&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id SIMBAD] give a wrong magnitude; [~~https://www.~~aavso~~.~~org~~/~~vsx~~/~~index~~.~~php?view=detail.top&oid=13784 VSX] registers it with 4.95±0.02 mag and as "delta Scuti"-type variable~~.		Note that the radiant for the Quadrantid meteor shower is near RA, Dec = 230.2, +49.5 (ICRS, J2000; Jenniskens et al. 2016), which is in Bootes and closer to 44 Boo than CL Dra (see https://www.obliquity.com/skyeye/88const/Qua.html).

	Another proposal would be to apply "Quadrans" to one star and "Muralis" to the other.		One proposal is to name the V=4.95 mag-star CL Dra for which [https://simbad.u-strasbg.fr/simbad/sim-id?Ident=CL+Dra&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id SIMBAD] give a wrong magnitude; [https://www.aavso.org/vsx/index.php?view=detail.top&oid=13784 VSX] registers it with 4.95±0.02 mag and as "delta Scuti"-type variable.

			Another proposal would be to apply "Quadrans" to one star and "Muralis" to the other, e.g. "Quadrans" for 44 Boo (the primary of its triple) and "Muralis" for CL Dra.

	WGSN chose to ...		WGSN chose to ...

Ericmamajek: /* IAU WGSN Name Discussion */

2025-02-02T05:34:38Z

IAU WGSN Name Discussion

@@ Line 51: / Line 51: @@
 In 2023 and 2025, it was suggested to use a name related to this obsolete historical constellation. The terms "Quadrans" or "Muralis" could be used to name a star in the area of this historical constellation; the first term makes more sense with regard to its reminiscence in the name of the meteor shower.
-Suggested for naming is the 5.0 mag-star CL Dra for which [https://simbad.u-strasbg.fr/simbad/sim-id?Ident=CL+Dra&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id SIMBAD] give a wrong magnitude; [https://www.aavso.org/vsx/index.php?view=detail.top&oid=13784 VSX] registers it with 4.95±0.02 mag and as "delta Scuti"-type variable, but this class has become obsolete as the variability is so small.
+The brightest stars in the vicinity of Quadrans Muralis, in order of brightness are:
 WGSN chose to ...

← Older revision		Revision as of 07:47, 8 June 2025
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	File:Bode1801 s Quadrans.jpg\|Bode 1801 Uranographia, Quadrans as a neighbouring detail next to Draco		File:Bode1801 s Quadrans.jpg\|Bode 1801 Uranographia, Quadrans as a neighbouring detail next to Draco
	File:Quadrans Muralis.jpg\|Bode's (1801), Quadrans Muralis in ''Uranographia'', Johann E. Bode. This file is from Wikimedia Commons and may be used by other projects		File:Quadrans Muralis.jpg\|Bode's (1801), Quadrans Muralis in ''Uranographia'', Johann E. Bode. This file is from Wikimedia Commons and may be used by other projects
			File:Young1807 Quadrans.JPG\|Quadrans Muralis in Young (1807): A Course of Lectures on Natural Philosophy and the Mechanical Arts.
	File:Alexander Jamieson Celestial Atlas-Plate 7 - restoration - crop.jpg\|Quadrans in Alexander Jamieson (1822), Plate 7 from ''A Celestial Atlas comprising a systematic display of the heavens in a series of thirty maps illustrated by scientific description of their contents and accompanied by catalogues of the stars and astronomical exercises''		File:Alexander Jamieson Celestial Atlas-Plate 7 - restoration - crop.jpg\|Quadrans in Alexander Jamieson (1822), Plate 7 from ''A Celestial Atlas comprising a systematic display of the heavens in a series of thirty maps illustrated by scientific description of their contents and accompanied by catalogues of the stars and astronomical exercises''
	File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, Urania's Mirror (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.		File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, Urania's Mirror (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.

← Older revision		Revision as of 08:01, 21 February 2025
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	File:Quadrans Muralis.jpg\|Bode's (1801), Quadrans Muralis in ''Uranographia'', Johann E. Bode. This file is from Wikimedia Commons and may be used by other projects		File:Quadrans Muralis.jpg\|Bode's (1801), Quadrans Muralis in ''Uranographia'', Johann E. Bode. This file is from Wikimedia Commons and may be used by other projects
	File:Alexander Jamieson Celestial Atlas-Plate 7 - restoration - crop.jpg\|Quadrans in Alexander Jamieson (1822), Plate 7 from ''A Celestial Atlas comprising a systematic display of the heavens in a series of thirty maps illustrated by scientific description of their contents and accompanied by catalogues of the stars and astronomical exercises''		File:Alexander Jamieson Celestial Atlas-Plate 7 - restoration - crop.jpg\|Quadrans in Alexander Jamieson (1822), Plate 7 from ''A Celestial Atlas comprising a systematic display of the heavens in a series of thirty maps illustrated by scientific description of their contents and accompanied by catalogues of the stars and astronomical exercises''
	File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, ''Urania's Mirror'' (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.		File:Sidney Hall - Urania's Mirror - Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis.jpg\|alt=Sidney Hall, Urania's Mirror (1825): "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by A familiar treatise on astronomy ... by Jehoshaphat Aspin. London. Astronomical chart, print on layered paper board : etching, hand-colored.\|Sidney Hall, ''Urania's Mirror (1825):'' "Bootes, Canes Venatici, Coma Berenices, and Quadrans Muralis", plate 10, a set of celestial cards accompanied by ''A familiar treatise on astronomy ...'' by Jehoshaphat Aspin. London. Astronomical chart, 1 print on layered paper board : etching, hand-colored.
	File:~~Quadrans muralis map~~.~~png~~\|~~Map~~ of ~~the ancient constellation '''~~Quadrans ~~Muralis.''' Created by CWitte with PP3~~ (~~PP3's homepage~~) ~~byTorsten Bronger. This file is from Wikimedia Commons and may be used by other projects~~.		File:Quadransstellarium.jpg\|Lalande's initial image of Quadrans mapped to Stellarium (Susanne M Hoffmann).
	</gallery>		</gallery>