Conon was born on Samos, Ionia, and possibly died in Alexandria, Ptolemaic Egypt, where he was court astronomer to Ptolemy III Euergetes.
She sacrificed her hair in exchange for her husband's safe return from the Third Syrian War, which began in 246 BC.
When the lock of hair disappeared, Conon explained that the goddess had shown her favor by placing it in the sky.
In astronomy, Conon wrote in seven books his De astrologia, including observations on solar eclipses.
The Roman Catullus writes that Conon "discerned all the lights of the vast universe, and disclosed the risings and settings of the stars, how the fiery brightness of the sun is darkened, and how the stars retreat at fixed times.