 | |
| Mission type | Optical reconnaissance |
|---|---|
| Operator | US Air Force / NRO |
| Harvard designation | 1960 Sigma 1 |
| COSPAR ID | 1960-018A |
| SATCAT no. | 00067 |
| Spacecraft properties | |
| Spacecraft type | Corona KH-2 |
| Bus | Agena-B |
| Manufacturer | Lockheed |
| Launch mass | 1,240 kilograms (2,730 lb) |
| Start of mission | |
| Launch date | 7 December 1960, 20:24:00 GMT |
| Rocket | Thor DM-21 Agena-B (Thor 296) |
| Launch site | Vandenberg, LC 75-3-4 |
| End of mission | |
| Decay date | 2 April 1961 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 243 kilometers (151 mi)[1] |
| Apogee altitude | 661 kilometers (411 mi) |
| Inclination | 81.5° |
| Period | 93.66 minutes |
Discoverer 18, also known as Corona 9013, was an American optical reconnaissance satellite launched on 7 December 1960 at 20:24:00 GMT.[1] It was the first successful, and the third of ten total Corona KH-2 satellites, based on the Agena-B.[2]
- ^ a b Cite error: The named reference
nasa.gov 1960-018Awas invoked but never defined (see the help page). - ^ Krebs, Gunter. "KH-2 Corona". Gunter's Space Page. Retrieved 23 October 2020.