Cygnus

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Abbreviation:  Cyg
English Name:  The Swan
Genitive: Deneb
Hemisphere: Northern Hemisphere
Location: Between the constellations of Cephus and Draco.
Visible between latitudes:  +90 and -40 degrees
Best season: Autumn
Seen in three seasons: Summer, Autumn & Winter
Best seen in:  September
Seen between: May and November
Right Ascension (RA): 21 hour
Declination (DEC): +40 degrees
Area (square degrees):  804 (16th)

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Cygnus (The Swan)

  • Feature constellation of Cygnus, often nicknamed “The Northern Cross”; its brightest star is Deneb (Magnitude: +1.3)
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  • Deneb forms one corner of the Summer Triangle, with Vega in Lyra and Altair in Aquila.
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  • It lies in a rich part of the Milky Way.

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Messier Objects in Cygnus

M29 – Open Cluster; similar to the Seven Sister (M45), M29 is ten times farther away and is much less famous than The Seven Sisters.
M39 – Open Cluster; Very large but very loose Open Cluster.

Other objects in Cygnus

Select CatalogNo of Objects
Barnard (B)31x objects
Caldwell (C)7x objects
Collinder (Cr)27x objects
New General Catalogue (NGC)69x objects
Index Catalogue (IC)24x objects
Sharpless (Sh2)32x objects

Features of Interest

  • NGC 7000 – North America Nebula; large nebula, visible under dark skies with binoculars or a wide field eyepiece for telescope – also known as Caldwell 20 (C20), the astrophotography takes the image that resembles the outline of North America map.
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  • NGC 6826 – The Blinking Planetary; also known as Caldwell 15 (C15), is a planetary nebula – too bright with large telescopes to have the striking “blinking” effect seen with smaller telescopes.
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  • NGC 6992 – The Veil Nebula; left behind by the explosion of a massive star thousands of years ago – a large supernova remnant as left over to be seen today in Cygnus.
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  • Albireo – one of the great small-telescope showpieces in the sky; even low magnification views resolve it into a double star – brighter yellow star making a striking colour contrast with its fainter blue star.

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Named Stars

  • Deneb (Alpha Cyg)
  • Albireo (Beta 1 Cyg)
  • Sadr (Gamma Cyg)
  • Gienah Cygni (Epsilon Cyg)
  • Azelfafage (Pi 1 Cyg)
  • Ruchba (Omega 2 Cyg)
  • more list of stars in Cygnus

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IAU Sky Chart: Cygnus

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Constellations – Visible from the UK

AndromedaAquariusAquilaAriesAuriga
BoötesCamelopardalisCancerCanes VenaticiCanis Major
Canis MinorCapricornusCassiopeiaCepheusComa Berenices
Corona BorealisCygnusDelphinusDracoEquuleus
GeminiHerculesLacertaLeoLeo Minor
LibraLynx LyraMonocerosOphiuchus
OrionPegasusPerseusPiscesSagitta
Serpens CaputSerpens CaudaSextansTaurusTriangulum
Ursa MajorUrsa MinorVirgoVulpecula
(44 constellations above are visible from the United Kingdom.)

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Parts visible from the UK

AntliaColumbaEridanusFornaxMicroscopium
Piscis AustrinusPuppisPyxisSagittariusScorpius
(10 constellations above are partially visible from the United Kingdom.)

(Only 10 of them even in part from the United Kingdom.)

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Constellations: Southern Celestial Hemisphere
…..never seen from the UK

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Back to Constellation Names

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