Kosmos 28 (Russian: Космос 28 meaning Cosmos 28) or Zenit-2 No.16 was a Soviet, a first generation, low resolution, optical film-return reconnaissance satellite which was launched in 1964. A Zenit-2 spacecraft, Kosmos 28 was the sixteenth of eighty-one such satellites to be launched[3][4] and had a mass of 4,730 kilograms (10,430 lb).
Kosmos 28 was operated in a low Earth orbit. On 4 April 1964, it had a perigee of 213 kilometres (132 mi), an apogee of 373 kilometres (232 mi), with inclination of 65.0° and an orbital period of 90.4 minutes. On 12 April 1964, the spacecraft was deorbited, with its return capsule descending by parachute for recovery by Soviet forces.[7][4]
Payloads are separated by bullets ( · ), launches by pipes ( | ). Crewed flights are indicated in underline. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).
