File:Cygnus_constellation_map.svg · Wikimedia Commons · See Wikimedia Commons
Also known as Alpha Cygni, 50 Cygni, α Cygni, α Cyg, 50 Cyg, HD 197345, HIP 102098, HR 7924
Deneb () is a blue supergiant star in the constellation of Cygnus. It is the brightest star in the constellation and the 19th brightest in the night sky, with an apparent magnitude slightly varying between +1.21 and +1.29. Deneb is one of the vertices of the asterism known as the Summer Triangle and the "head" of the Northern Cross. Its Bayer designation is α Cygni, which is Latinised to Alpha Cygni, abbreviated to Alpha Cyg or α Cyg.
Deneb is a bright blue supergiant star located in the constellation Cygnus that ranks as the 19th brightest star visible from Earth. It holds significance as a key landmark in the night sky, forming one corner of the asterism called the Summer Triangle and marking the "head" of the Northern Cross pattern.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Instance of
- star
- Part of
- Northern Cross
- Constellation
- Cygnus
- Distance from Earth
- 1640
- Radius
- 203
- Mass
- 21
- Variable-star type
- Alpha Cygni variable
- Image
- Deneb Sun comparison.svg
Show 19 more facts
- catalog code
- UBV M 25099
- Commons category
- Deneb
- spectral class
- A2p
- apparent magnitude
- 0.88
- metallicity
- 0.23
- parallax
- 2.31
- absolute magnitude
- -6.9
- luminosity
- 210000
- Commons gallery
- Deneb
- right ascension
- 310.357979753
- declination
- 45.280338807
- effective temperature
- 8000
- radial velocity
- -6.8
- epoch
- J2000.0
- stellar rotational velocity
- 43.0
- surface gravity
- 13.5
- right ascension component of proper motion
- 2
- declination component of proper motion
- 2
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- Wikipedia:Vital articles/Level/4
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