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79:, respectively). The greatest declination is +45° and lowest is +9° meaning the three can be seen from all places in the Northern Hemisphere and from the home of most people resident in the Southern Hemisphere. The two stars in Aquila and Cygnus represent the head of an eagle and tail of a swan that looks east inscribed into the triangle and forming the
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Both Altair and Vega are bluish-white, rapidly-rotating A-type main sequence stars in the local neighbourhood of the sun. However, Deneb is a white supergiant star over 100 times as distant, and one of the most luminous stars in the entire galaxy.
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connected the stars in a map in a book in 1816, although without label. These are the same stars recognized in the
Chinese legend of
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Lt. Col. William E. Hubert, USAF (Ret.) (December 1, 2006). "Chapter Eleven: "Triple Rated" Copilot, (Ugh)!".
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in the 1950s. The name can be found in constellation guidebooks as far back as 1913. The
Austrian astronomer
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NASA Astronomy
Picture of the Day: The Summer Triangle over the Great Wall (3 July 2017)
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and other electronic and mechanical equipment took their places in military aircraft,
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In autumn and winter evenings, it is visible in the western sky until
January.
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navigators referred to this asterism as the "Navigator's
Triangle".
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NASA Astronomy
Picture of the Day: Summer Triangle (25 June 2010)
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119:(Summerly Triangle) in 1934. The asterism was remarked upon by
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it is visible in the eastern sky in early mornings during
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The Stars and Their
Stories: A Book for Young People
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99:The term was popularized by American author
165:The Summer Triangle in the context of the
185:the centre of the triangle appears about
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115:(Great Triangle) in the late 1920s and
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466:Pilot Here Or Pile It There: A Memoir
449:Alice Mary Matlock Griffiths (1913),
426:Patrick Moore's History of astronomy
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423:Patrick Moore (20 October 1983).
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223:The stars of the Summer Triangle
130:The Cowherd and the Weaver Girl
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37:northern celestial hemisphere
83:. Two small constellations,
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147:inertial navigation systems
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23:Map of the Summer Triangle
502:Basic Celestial Phenomena
404:Heavenly Market enclosure
121:Joseph Johann von Littrow
111:described these stars as
81:altitude of the triangle
151:United States Air Force
103:and British astronomer
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616:Asterisms (astronomy)
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117:Sommerliches Dreieck
199:27th parallel north
31:is an astronomical
241:Apparent magnitude
217:southern latitudes
179:northern latitudes
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43:of this imaginary
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521:DavidDarling.info
512:The Astronomy Net
504:by Kerry Magruder
436:978-0-356-08607-1
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125:Johann Elert Bode
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508:Summer Triangle
498:Summer Triangle
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389:Spring Triangle
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39:. The defining
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588:Outer space
576:Spaceflight
471:AuthorHouse
268:light years
610:Categories
410:References
245:Luminosity
157:Visibility
552:Astronomy
338:203 ± 17
215:From mid-
167:night sky
101:H. A. Rey
89:Vulpecula
372:See also
281:☉
264:Distance
253:☉
187:overhead
143:Chilseok
139:Tanabata
45:triangle
41:vertices
33:asterism
16:Asterism
538:Portals
382:Spring
329:200,000
193:during
189:around
95:History
85:Sagitta
63:of its
47:are at
35:in the
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349:Aquila
344:Altair
322:Cygnus
273:Radius
206:spring
195:summer
75:, and
73:Cygnus
69:Aquila
55:, and
49:Altair
564:Stars
332:A2 Ia
317:Deneb
234:Name
173:From
53:Deneb
621:Vega
475:ISBN
431:ISBN
362:16.6
359:A7 V
353:0.77
335:3550
326:1.25
305:A0 V
299:0.03
295:Lyra
290:Vega
87:and
77:Lyra
57:Vega
27:The
519:at
510:at
500:at
175:mid
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
