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Canis Minor CMi Canis Minoris ancient (Ptolemy)
Capricornus Cap Capricorni ancient (Ptolemy)
Carina Car Carinae 1763, Lacaille, split from Argo Navis
Cassiopeia Cas Cassiopeiae an cient (Ptolemy)
Centaurus Cen Centauri ancient (Ptolemy)
Cepheus Cep Cephei ancient (Ptolemy)
Cetus Cet Ceti ancient (Ptolemy)
Chamaeleon Cha Chamaeleontis 1603, Uranometria, created by Keyser and de
Houtman
Circinus Cir Circini 1763, Lacaille
Columba Col Columba e 1679, Royer, split from Canis Major
Coma Berenices Com Comae Berenices 1603, Uranometria, split from Leo
Corona
Australis[3] CrA Coronae Australis ancient (Ptolemy)
Corona Borealis CrB Coronae Borealis ancient (Ptolemy)
Corvus Crv Corvi ancient (Ptolemy)
Crater Crt Crateris ancient (Ptolemy)
Crux Cru Crucis 1603, Uranometria, split from Centaurus