Back Surveyor 4 Afrikaans Surveyor 4 Catalan Surveyor 4 Czech Surveyor 4 German Surveyor 4 Greek Surveyor 4 Spanish Surveyor 4 Basque نقشهبردار ۴ Persian Surveyor 4 Finnish Surveyor 4 French
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 Surveyor model on Earth | |
| Mission type | Lunar lander |
|---|---|
| Operator | NASA |
| COSPAR ID | 1967-068A |
| SATCAT no. | 02875 |
| Mission duration | 62 hrs. 9 min. 1 sec. (launch to last contact) |
| Spacecraft properties | |
| Manufacturer | Hughes Aircraft |
| Launch mass | 1,037.4 kg[1] |
| Dry mass | 283 kilograms (624 lb)[2] |
| Start of mission | |
| Launch date | July 14, 1967, 11:53:29 UTC [1] |
| Rocket | Atlas LV-3C Centaur-D AC-11 |
| Launch site | Cape Canaveral LC-36A |
| End of mission | |
| Last contact | July 17, 1967, 02:02:30 UTC (approx) |
| Lunar impact (failed landing) | |
| Impact date | July 17, 1967, 02:05:00 UTC |
| Impact site | 0°27′N 1°23′W / 0.45°N 1.39°W |
Surveyor 4 is the fourth lunar lander in the American uncrewed Surveyor program sent to explore the surface of the Moon. This spacecraft crashed after an otherwise flawless mission; telemetry contact was lost 2.5 minutes before touchdown. The planned landing target was Sinus Medii (Central Bay) at 0.4° north latitude and 1.33° west longitude.
Surveyor 6 successfully landed near the crash site of Surveyor 4 a few months later in November 1967.
- ^ a b "Surveyor 4". NASA's Solar System Exploration website. Retrieved December 2, 2022.
- ^ "Surveyor 4". NASA Space Science Data Coordinated Archive. NASA.