Lewis & Short

2. Ărātus, i, m., = Ἄρατος.

  1. I. A Greek poet of Soli, in Cilicia, who fl. B. C. 250; author of an astronomical poem, entitled Φαινόμενα, which Cicero, and afterwards Caesar Germanicus, translated into Latin, Cic. de Or. 1, 16, 69; id. Rep. 1, 22, 56; id. N. D. 2, 41; Ov. Am. 1, 15, 16; Stat. S. 5, 3, 23 (Ărătŭs, Paul. Nol. Carm. 19, 125; Sid. Carm. 23, 112).
  2. II. Aratus of Sicyon, a distinguished Greek general, founder of the Achœan League, Cic. Off. 2, 23, 81 (v. his life written by Plutarch).