Kosmos 166
| Mission type | Solar imaging |
|---|---|
| COSPAR ID | 1967-061A |
| SATCAT no. | 02848 |
| Mission duration | 131 days |
| Spacecraft properties | |
| Spacecraft type | DS-U3-S |
| Manufacturer | Yuzhnoye |
| Launch mass | 400 kg |
| Start of mission | |
| Launch date | 16 June 1967, 04:44:00 GMT |
| Rocket | Kosmos-2I 63SM |
| Launch site | Kapustin Yar, 86/1 |
| Contractor | Yuzhnoye |
| End of mission | |
| Decay date | 25 October 1967 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 281 km |
| Apogee altitude | 553 km |
| Inclination | 48.4° |
| Period | 92.6 minutes |
| Epoch | 16 June 1967 |
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 400 kilograms (880 lb) spacecraft, which was built by the Yuzhnoye Design Office, and was used to conduct multispectral imaging of the Sun.
Kosmos 166 was launched from Site 86/1 at Kapustin Yar, aboard a Kosmos-2I 63SM carrier rocket. 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. 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.
Kosmos 166 was the first of two DS-U3-S satellites to be launched, the other being Kosmos 230. It was operated in an orbit with a perigee of 281 kilometres (175 mi), an apogee of 553 kilometres (344 mi), an inclination of 48.4°, and an orbital period of 92.6 minutes. It completed operations on 26 September 1967, before decaying from orbit and reentering the atmosphere on 25 October.