ὕπαυγος
From LSJ
ἡδονήν, μέγιστον κακοῦ δέλεαρ → pleasure, the greatest incitement to evildoing | pleasure, a most mighty lure to evil | pleasure, the great bait to evil
English (LSJ)
ον, of a heavenly body,
A within150 of the sun, combust, Serapio in Cat.Cod.Astr.8(4).230, Paul.Al.L.1 (with Sch.), Steph. in Hp.Aph.2.363D. II less technically, exposed to rays, Orph.Fr. 353.