| AQUILA Chart | Midnight Culmination | Skylore | Description | Asterisms |
| Special Stars | Discussed in these Shows |

Constellation Data

  • Name: AQUILA
  • Translation: Eagle
  • Abbreviation: Aql
  • Genitive: Aquilae
  • Size: 22
  • Located Between: Cygnus, Sagittarius
  • RA: 20 hours
  • Decl: +5 degrees
  • Season: Summer
  • Midnight Culmination: 16 July
  • Pages where AQUILA is discussed in Chet Raymo's 365 Starry Nights: 129,147-149

What is the Genitive form?
What is Right Ascension (RA)?
Is this constellation ever visible from my latitude? What is Declination?

Where should I look for a constellation on a date before or after its midnight culmination? What is Midnight Culmination?


Aquila was a messenger for Zeus (Jupiter), who rewarded his faithful friend with a place among the stars after years of service. Another story is told of how Aquila was rewarded with a place in the heavens for having brought from earth the handsome Ganymede to serve as cupbearer of the gods.


Between Cygnus and Sagittarius, with Altair (its brightest star) making the south end of the Summer Triangle (along with Deneb of Cygnus and Vega of Lyra). As the night sky changes, Aquila the Eagle and Cygnus the Swan swing slowly westward across the sky towards the horizon. The Eagle sets tail first, followed closely by the Swan, who dives beak first below the western horizon.

[star chart]

Star chart created with Voyager II Software for Macintosh, published by Carina Software. This is just a taste of what Voyager can do! For info on Voyager II software, call Carina Software at (510) 355-1266, write them at 12919 Alcosta Blvd Suite #7, San Ramon, CA 94583, or visit Carina Software's home page and check out Voyager II for yourself.


Summer Triangle

What is an Asterism?

Special Stars

The bright star Altair (ALL-tare) lies in the constellation Aquila the Eagle, which was a servant of Zeus. Altair means "the flying one," and Altair flies around its axis once every 6 and a half hours. Astronomers calculate that because of this rapid rotation, it must be twice as wide at its equator as at its poles. Altair is one and a half times larger and 11 times brighter than our sun, and only 16 light years away.

Table of 25 Brightest Stars.
What is apparent stellar magnitude?

Discussed in these Shows

[Small Logo] ©1997 Welcome to the Basic Celestial Phenomena web site. To provide explanations of basic observational astronomy to students, teachers, families, and visitors to planetariums these pages have been written by an ex-OBU Planetarium Director, Kerry Magruder; the OBU Natural Sciences Coordinator, Mike Keas; and some of the students who work in the OBU planetarium.

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