Kosmos 393 was the thirty-ninth of seventy nine DS-P1-Yu satellites to be launched, and the thirty-sixth of seventy two to successfully reach orbit. It was operated in an orbit with a perigee of 263 kilometres (163 mi), an apogee of 451 kilometres (280 mi), 71 degrees of inclination, and an orbital period of 91.7 minutes. It remained in orbit until it decayed and reentered the atmosphere on 16 June 1971.
Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.