| Kosmos 166 | |
| Mission Type: | Solar imaging |
| Cospar Id: | 1967-061A |
| Satcat: | 02848 |
| Mission Duration: | 131 days |
| Spacecraft Type: | DS-U3-S |
| Manufacturer: | Yuzhnoye |
| Launch Mass: | 400 kg |
| Launch Date: | 16 June 1967, 04:44:00 GMT |
| Launch Rocket: | Kosmos-2I 63SM |
| Launch Site: | Kapustin Yar, 86/1 |
| Launch Contractor: | Yuzhnoye |
| Decay Date: | 25 October 1967 |
| Orbit Epoch: | 16 June 1967 |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Low Earth |
| Orbit Periapsis: | 281 km |
| Orbit Apoapsis: | 553 km |
| Orbit Inclination: | 48.4° |
| Orbit Period: | 92.6 minutes |
| Apsis: | gee |
Kosmos 166 (Russian: Космос 166 meaning Cosmos 166), also known as DS-U3-S No.1, was a satellite which was launched by the Soviet Union in 1967 as part of the Dnepropetrovsk Sputnik programme. It was a spacecraft, which was built by the Yuzhnoye Design Office, and was used to conduct multispectral imaging of the Sun.[1]
Kosmos 166 was launched from Site 86/1 at Kapustin Yar, aboard a Kosmos-2I 63SM carrier rocket.[2] The launch occurred at 04:44:00 GMT on 16 June 1967, and resulted in the successful insertion of the satellite into a low Earth orbit.[3] Upon reaching orbit, the satellite was assigned its Kosmos designation, and received the International Designator 1967-061A. The North American Air Defense Command assigned it the catalogue number 02848.[4]
Kosmos 166 was the first of two DS-U3-S satellites to be launched,[1] the other being Kosmos 230.[5] It was operated in an orbit with a perigee of, an apogee of, an inclination of 48.4°, and an orbital period of 92.6 minutes.[6] It completed operations on 26 September 1967,[7] before decaying from orbit and reentering the atmosphere on 25 October.[8]