Albireo (β Cygni) (Massimo Di Fusco)

Albireo (β Cygni)

Albireo (β Cygni) is a star system located on one end of the longest arm of the cross which forms the structure of the constellation Cygnus, the other end being Deneb (α Cygni). It is considered one of the most beautiful double stars in the sky as it is made up of two contrasting colored stars: the main one is orange in color while the secondary is white-blue in colour.
Albireo A is the brighter star of the pair, has an apparent magnitude of 3.1 and is a bright orange giant of class K3. It has a surface temperature of 4400 K, lower than that of the Sun, but with a radius 50 times greater. Its color is yellow-orange and its mass is calculated to be 5 times that of the Sun.
Albireo B has an apparent magnitude of 5.1 and is a blue-white B8 class star with a surface temperature of 12100 K, much higher than that of the Sun. Its mass is calculated to be 3.3 times that of the sun.

The Arabic name assigned to this star is Minqār al-Dajāja, which literally translated means "hen's beak", a definition that refers to the position of Albireo within the constellation. Taking this into account, the hypothesis according to which the current name of the star is the result of a transcription error is in a certain sense confirmed. In a 1515 edition of the Almagest, the name Albireo is linked to the Latin expression ab ireo (meaning from the iris), where the term Ireus, or the iris, could be a wrong transcription of the Greek word Ornis, which means bird.

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Status	Advanced success
Started	...
Astrometry.net job	7678230
PixInsight job	9UC4WJARJZOATDHX3NTYP0J9FYKP4MZB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h30m44s.499
RA (top/left)	19h30m29s.949
RA (top/right)	19h32m21s.418
RA (bottom/right)	19h30m59s.301
RA (bottom/left)	19h29m07s.680

Dec (center)	+27°56′38″.14
Dec (top/left)	+27°35′20″.13
Dec (top/right)	+27°59′26″.71
Dec (bottom/right)	+28°17′58″.97
Dec (bottom/left)	+27°53′46″.98

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Albireo (β Cygni)

Albireo (β Cygni)

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Albireo (β Cygni)

Albireo (β Cygni)

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