File:Aquila_constellation_map.svg · Wikimedia Commons · See Wikimedia Commons
نسر طایر
Sign in to saveAlso known as Alpha Aquilae, 53 Aquilae, α Aql, alf Aql, α Aquilae, 53 Aql, LTT 15795, ADS 13009 A
Altair is the brightest star in the equatorial constellation of Aquila and the twelfth-brightest star in the night sky. It has the Bayer designation Alpha Aquilae, which is Latinised from α Aquilae and abbreviated Alpha Aql or α Aql. Altair is an A-type main-sequence star with an apparent visual magnitude of 0.77 and is one of the vertices of the Summer Triangle asterism; the other two vertices are marked by Deneb and Vega. It is located at a distance of from the Sun. Altair is currently in the G-cloud—a nearby interstellar cloud formed from an accumulation of gas and dust.
Altair is the brightest star in the constellation Aquila and the twelfth-brightest star visible from Earth, easily recognizable as one of the three points of the Summer Triangle asterism in the night sky. It matters to astronomers and stargazers because of its prominence and brightness, and it provides an important reference point for locating other celestial objects and understanding our local region of the galaxy.
AI-generated from the Wikipedia summary — may contain errors.
Astronomical data · SIMBAD
- Object type
- dS*
- Spectral type
- A7Vn
- Distance
- 17 light-years
- Redshift
- z = -0.00008872411333848973
- Coordinates
- RA 297.6958° · Dec 8.8683°
via SIMBAD · CDS Strasbourg
Wikidata facts
- Instance of
- pulsating variable star
- Part of
- Summer Triangle
- Constellation
- Aquila
- Distance from Earth
- 17
- Diameter
- 2530000
- Radius
- 1.7
- Mass
- 1.7
- Variable-star type
- Delta Scuti variable
- Image
- Aquila constellation map.svg
Show 23 more facts
- located in/on physical feature
- Local Interstellar Cloud
- Commons category
- Altair
- spectral class
- A1n
- catalog code
- UBV M 24205
- apparent magnitude
- 0.24
- absolute magnitude
- 2.22
- luminosity
- 10.7
- stellar rotational velocity
- 90.8
- right ascension
- 297.695827296
- declination
- 8.868321196
- effective temperature
- 7377
- parallax
- 0.19
- radial velocity
- -39.1
- epoch
- J2000.0
- metallicity
- 0.48
- surface gravity
- 9000
- flattening
- 0.2
- age estimated by a dating method
- 1000000000
- color index
- 0.08
- different from
- Altair
- right ascension component of proper motion
- 535
- declination component of proper motion
- 383
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
via Wikidata · CC0
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