In which constellation is VV Orionis located: Orion, Aquila, Ara or Aries?

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VV Orionis is a binary star system in Orion’s belt, faintly visible to the naked eye.

Learn more on Codexery: VV Orionis in Variable 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 what year was NGC 7213 discovered: 1786, 1834, 1836 or 1864?

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

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