Cassiopeia

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Abbreviation:  Cas
English Name:  The Cassiopeia Queen
Genitive: Schedar, sometimes spelt Shedar or Shedir.
Hemisphere: Northern Hemisphere
Location: Between the constellations of Andromeda and Cephus.
Visible between latitudes:  +90 and -20 degrees
Best season: Autumn
Seen in three seasons: Summer, Autumn and Winter
Best seen in:  November
Seen between: Circumpolar (This constellation of Cassiopeia stays in the sky all the year.)
Right Ascension (RA): 01 hour
Declination (DEC): +60 degrees
Area (square degrees):  598 (25th)

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Cassiopeia (The Cassiopeia Queen)

  • The five leading stars make up a W-shape or M-shape pattern, on the opposite side of the Big Dipper (Ursa Major).
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  • Easy to recognise due to it being helped by the `W` shape, formed by five bright stars.
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  • Cassiopeia contains several Open Clusters resolvable in binoculars.

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Messier Objects in Cassiopeia

M52 – Open Cluster, visible with binoculars – covering an area about one-third the size of Full Moon, although a telescope is needed to see some individual stars.
M103 – There are about 40 member stars within M103; two of which have magnitude +10.5, and magnitude +10.8 red giant, which is the brightest within the cluster.

Other objects in Cassiopeia

Select CatalogNo of Objects
Barnard (B)0x object
Caldwell (C)6x objects
Collinder (Cr)30x objects
New General Catalogue (NGC)41x objects
Index Catalogue (IC)17x objects
Sharpless (Sh2)42x objects

Features of Interest in Capricornus

  • NGC 457 – Open Cluster; appearance has been compared to an owl’s eyes pattern, with two brightest stars marking the owl’s eyes.
  • NGC 663 – also Known as Caldwell 10 (C10) is young Open Cluster of about 400 stars.
  • Two galaxies are in Cassiopeia by Andromeda to the south; NGC 147; also known as Caldwell 17 (C17), and NGC 185; also known as Caldwell 18 (C18).

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Named Stars

  • Schedar (Alpha Cas) (sometimes spelt Shedar or Shedir)
  • Caph (Beta Cas)
  • Ruchbah (Delta Cas)
  • Segin (Epsilon Cas)
  • Achird (Eta Cas)
  • Marfak (Theta Cas)
  • Marfak (Mu Cas)
  • more list of stars in Cassiopeia

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IAU Sky Chart: Cassiopeia

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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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