In which constellation is Epsilon Cygni located: Ophiuchus, Scorpius, Cygnus or Camelopardalis?

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Epsilon Cygni is a binary star system in the constellation Cygnus, where it goes by the Bayer designation ε Cygni.

Learn more on Codexery: Epsilon Cygni in Binary and Multiple Stars

How many moons does Mars have?

Which planet is known as the Red Planet?

In which constellation is Robert's Quartet located: Phoenix, Draco, Grus or Corona Borealis?

In which constellation is R Aquarii located: Andromeda, Apus, Antlia or Aquarius?

In what year was Messier 58 discovered: 1764, 1773, 1779 or 1781?

In which constellation is NGC 5679 Group located: Corona Borealis, Phoenix, Virgo or Leo?