 Explorer 39 satellite | |
| Names | AD-C Air Density experiment-C |
|---|---|
| Mission type | Air density |
| Operator | NASA |
| COSPAR ID | 1968-066A |
| SATCAT no. | 03337 |
| Spacecraft properties | |
| Spacecraft | Explorer XXXIX |
| Spacecraft type | Explorer |
| Bus | AD |
| Manufacturer | Langley Research Center |
| Launch mass | 9.4 kg (21 lb) |
| Dimensions | 3.6 m (12 ft) diameter |
| Power | Solar cells and rechargeable batteries |
| Start of mission | |
| Launch date | 8 August 1968, 20:12:00 GMT[1] |
| Rocket | Scout B (S-165C) |
| Launch site | Vandenberg, SLC-5 |
| Contractor | Vought |
| Entered service | 8 August 1968 |
| End of mission | |
| Last contact | June 1971 |
| Decay date | 22 June 1981 |
| Orbital parameters | |
| Reference system | Geocentric orbit[2] |
| Regime | Low Earth orbit |
| Perigee altitude | 670 km (420 mi) |
| Apogee altitude | 2,538 km (1,577 mi) |
| Inclination | 80.60° |
| Period | 118.20 minutes |
| Instruments | |
| Nonsystematic Changes of Air Density Systematic Changes of Air Density | |
Explorer program | |
Explorer 39, also known as AD-C (Air Density experiment-C), was a NASA scientific satellite belonging to series Air Density. It was launched on 8 August 1968, join with Explorer 40, from Launch Complex 5 of the Vandenberg Air Force Base, through a Scout launch vehicle.[3]
- ^ "Launch Log". Jonathan's Space Report. 21 July 2021. Retrieved 13 November 2021.
- ^ Cite error: The named reference
Trajectorywas invoked but never defined (see the help page). - ^ "Display: Explorer 39 (AD-C) 1968-066A". NASA. 28 October 2021. Retrieved 13 November 2021.
This article incorporates text from this source, which is in the public domain.
