| Kosmos 99 | |
| Names List: | Zenit 2-32 |
| Mission Type: | Optical imaging reconnaissance |
| Operator: | OKB-1 |
| Cospar Id: | 1965-103A |
| Satcat: | 1817 |
| Spacecraft Type: | Zenit-2 |
| Manufacturer: | OKB-1 |
| Launch Mass: | 4730 kg[1] |
| Launch Date: | 10 December 1965 08:09:00 GMT |
| Launch Rocket: | Vostok-2 |
| Launch Site: | Baikonur 31/6 |
| Disposal Type: | Recovered |
| Landing Date: | 18 December 1965 |
| Orbit Epoch: | 10 December 1965 |
| Orbit Reference: | Geocentric[2] |
| Orbit Regime: | Low Earth |
| Orbit Periapsis: | 203 km |
| Orbit Apoapsis: | 309 km |
| Orbit Inclination: | 65.0° |
| Orbit Period: | 89.6 minutes |
| Apsis: | gee |
| Programme: | Zenit programme Zenit-2 |
| Previous Mission: | Zenit 2-31 |
| Next Mission: | Zenit 2-33 |
| Programme2: | Kosmos (satellites) |
| Previous Mission2: | Kosmos 98 |
| Next Mission2: | Kosmos 100 |
Kosmos 99 (Russian: Космос 99 meaning Cosmos 99) or Zenit-2 No.32 was a Soviet, first generation, low resolution, optical film-return reconnaissance satellite launched in 1965. A Zenit-2 spacecraft, Kosmos 99 was the thirty-second of eighty-one such satellites to be launched[3] and had a mass of 4730kg (10,430lb).
Kosmos 99 was launched by a Vostok-2 rocket, serial number U15001-04,[4] flying from Site 31/6 at the Baikonur Cosmodrome. The launch took place at 08:09 GMT on 10 December 1965.[5] Following its successful arrival in orbit the spacecraft received its Kosmos designation; along with the International Designator 1965-103A and the Satellite Catalog Number 01817.
Kosmos 99 was operated in a low Earth orbit, at an epoch of 10 December 1965, it had a perigee of 203km (126miles), an apogee of 309km (192miles), an inclination of 65.0° and an orbital period of 89.6 minutes.[6] On 18 December 1965, after eight days in orbit, the satellite was deorbited with its return capsule descending by parachute for recovery by the Soviet force.[7]