Who discovered 31 Euphrosyne: H. Goldschmidt, Auguste Charlois, James Ferguson or Robert Luther?

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31 Euphrosyne ranks among the largest asteroids, roughly tied for seventh place depending on measurement margins.

Learn more on Codexery: 31 Euphrosyne in Notable Asteroids

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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?

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