Delphinus

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Abbreviation:  Del
English Name:  The Dolphin
Genitive: Sualocin
Hemisphere: Northern Hemisphere
Location: Between the Between the constellations of Equuleus and Sagitta.
Visible between latitudes:  +90 and -70 degrees
Best season: Autumn
Seen in three seasons: Summer, Autumn & Winter
Best seen in:  September
Seen between: June and November
Right Ascension (RA): 21 hour
Declination (DEC): +10 degrees
Area (square degrees):  189 (69th)

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Delphinus (The Dolphin)

  • Delphinus’ four brightest stars form a feature asterism as a leaping Dolphin, that can easily be recognized. Sometimes it gives a name as Job’s Coffin.
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  • It is in a rich Milky Way star field.

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Messier Objects in Delphinus

No Messier objects in Delphinus.

Other objects in Delphinus

Select CatalogNo of Objects
Barnard (B)0x object
Caldwell (C)2x objects
Collinder (Cr)0x object
New General Catalogue (NGC)22x objects
Index Catalogue (IC)7x objects
Sharpless (Sh2)0x object

Features of Interest

  • NGC 6891 – Planetary Nebula; very bright, it requests using OIII filter to be seen. (small blue disk.)
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  • NGC 6934 – Globular Cluster, also known as Caldwell 47 (C47) – brighter and larger of the two displaying Globular Cluster in Delphinus.
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  • NGC 7006 – Globular Cluster, also known as Caldwell 42 (C42) – can be mistaken for a faint star at low magnification.

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Named Stars

  • Sualocin (Alpha Del)
  • Rotanev (Beta Del)
  • Deneb Dulfim (Epsilon Del)
  • List of stars in Delphinus.

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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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