The Sea Goat

Abbreviation: Cap
Genitive: Capricorni
Origin: [antiquity]

The constellation of Capricornus

Capricornus is a member of the zodiac. This is one of the most ancient of constellations, harking back to Babylonia and before. The planet Neptune was discovered near the star δ Cap (Deneb Algedi) on 23 September 1846.

Notable Features

Designation Name Description
α2 Cap Algedi Algedi is a wide double star that is easily visible through binoculars. It sometimes appears as Prima Giedi in older star atlases and catalogues. It also appears as Shimalih Saad al Dzabihh (from the Arabic shamāliy saʿad al‑dhābiḥ meaning 'the northern lucky star of the slaughterer') in Mohammad Al Achsasi Al Mouakket's calendarium and as Gredi in Antonín Bečvář's Atlas of the Heavens — Ⅱ Catalogue 1950.0.
β1 Cap Dabih Dabih is another wide double star. It sometimes appears as Dabih Major in older star atlases and catalogues.
γ Cap Nashira This star sometimes appears as Nashira Prima or Nashira Prior in older star atlases and catalogues.
δ Cap Deneb Algedi Contrary to expectation, this star is the brightest one in the constellation. It sometimes appears as Nashira Posterior or Scheddi in older star atlases and catalogues.
ν Cap Alshat
M30 This globular cluster is easily seen but not resolved into stars with binoculars or a small telescope.