Home > Aquila (constellation)
| Aquila |
|
| Abbreviation | Aql |
| Genitive | Aquilae |
| Meaning in English | the Eagle |
| Right ascension | 20 h |
| Declination | +5° |
| Visible to latitude | Between +85° and - 75° |
| On meridian | July |
Area
- Total | Ranked 22nd
652 sq. deg. |
Number of stars with
apparent magnitude < 3 | 3 |
Brightest star
- Apparent magnitude | Altair (α Aquilae)
0.77 |
| Meteor showers |
- June Aquilids
- Epsilon Aquilids
|
| Bordering constellations |
- Sagitta
- Hercules
- Ophiuchus
- Serpens
- Scutum
- Sagittarius
- CapricornusCapricornus Abbreviation Cap Genitive Capricorni Meaning in English the Goat or Sea-Goat Right ascension 21 h Declination minus;20° Visible to latitude Between 60° and −90° Best visible September Area Total Ranked 40th414 sq. Number of stars with ap
- AquariusThis article is about the constellation. For other meanings see Aquarius (disambiguation Aquarius the water bearer, is one of the oldest recognized constellations along the zodiac, the sun's apparent path. It is found in a region often called the Sea due
- DelphinusThere are other meanings of Delphinus Delphinus the Dolphin, is a rather small (ranked 69th) northern constellation very close to the celestial equator. It was already included in Ptolemy's list of 48 constellations and also forms part of the modern list
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Aquila is one of the 48 constellationOrion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). A constellation is a group of stars visibly related to each other in a particular configuration. In three-dimensional space, most of the starss listed by PtolemyThis article is about the geographer and astronomer Ptolemy. For Alexander the Great's general, see Ptolemy I of Egypt. For others, see Ptolemy (disambiguation). Claudius Ptolemaeus (Greek: Klaudios Ptolemaios; A. circa 85 circa 165), known in English as and is now also part of the list of 88 constellations acknowledged by the IAU.
It lies roughly at the celestial equatorThe celestial equator is a great circle on the imaginary celestial sphere, which could be constructed by inflating the Earth's equator until it intersects with said sphere. The celestial equator is inclined by ~23. 5°, with respect to the ecliptic plane;.
The alpha star, Altair, is a vertexIn geometry, a vertex ( Latin: whirl, whirlpool; plural vertices is a corner of a polygon (where two sides meet) or of a polyhedron (where three or more faces and an equal number of edges meet). In graph theory, a graph describes a set of connections betw of the so-called " Summer Triangle".
1 Notable features
Aquila, which lies in the Milky Way, contains many rich starfields.
- α Aql: also known as Altair ( ar. flying) this multiple star system (3 components) has 0.77m and is of spectral type A7 V.
- β Aql (Alshain): its spectral type is G8 IV and it shines with an apparent brightness of 3.71m. Like Altair, it too is a multiple star system with three components.
- γ Aql (Tarazed): spectral type K3 II; 2.72m
- η Aql: This variable star is one of the brightest classical Cepheids; its brightness varies between 3.48 mag and 4.39 mag every 7.177 days.
- 15 Aql: This double star is a yellow K star of 5.4 mag accompanied by a 7th mag star; it can easily be observed with small telescopes.
