How many modern constellations are there?

As of 2014, there are 41 modern constellations, which are constellations added to the catalogue after 1600. Four of them, Carina, Puppis, Pyxis and Vela are derived from Argo, a constellation catalogued by Ptolemy.

The modern constellations include: Antlia, the pump; Apus, the bird of paradise; Camelopardalis, the giraffe; Canes Venatici, the hunting dogs; Carina, the keel; Columba, the dove; Coma Bernices, the hair of Berenice; Fornax, the furnace; Lacerta, the lizard; Leo Minor, the lesser lion; Mensa, the table; Monoceros, the unicorn; Musca, the fly; Pavo, the peacock; Phoenix, the phoenix; Puppis, the stern; Pyxis the compass; Tucana, the toucan; Vela, the sails; and Vulpecula, the fox.