| Vostok 4 | |||||
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| Mission insignia | |||||
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| Mission statistics | |||||
| Mission name: | Vostok 4 | ||||
| Call sign: | Беркут (Berkut - "Golden Eagle") | ||||
| Crew size: | 1 | ||||
| Launch: | August 12, 1962 08:02:33 UTC Gagarin's Start |
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| Landing: | August 15, 1962 06:59 UTC |
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| Duration: | 2d/22:56 | ||||
| Number of Orbits: | 48 | ||||
| Apogee: | 211 km | ||||
| Perigee: | 159 km | ||||
| Period: | 88.2 minutes | ||||
| Orbit inclination: | 65.0° | ||||
| Mass: | 4728 kg | ||||
| Related missions | |||||
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Vostok 4 was a mission in the Soviet space program. It was launched a day after Vostok 3 with cosmonaut Pavel Popovich on board - the first time that more than one manned spacecraft were in orbit at the same time. The two capsules came within 5 km of one another and ship-to-ship radio contact was established. The mission went largely as planned, despite a malfunction with the Vostok's life-support systems that meant that cabin temperature dropped down to 10 °C. The flight was terminated early, after a misunderstanding by ground control, who believed that Popovich had given them a code-word asking to be brought back ahead of schedule. The re-entry capsule is now on display at the NPO Zvezda Museum in Moscow, but it has been modified to represent the Voskhod 2 capsule.
Crew
Number in parentheses indicates number of spaceflights by each individual prior to and including this mission.
- Pavel Popovich (1)
Backup crew
Reserve crew
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| Unmanned: | Sputnik 4, Sputnik 5, Sputnik 6, Sputnik 9, Sputnik 10 |  |
| Manned: | Vostok 1, Vostok 2, Vostok 3, Vostok 4, Vostok 5, Vostok 6 | |
| Planned: | Vostok 7 to 13, incorporated into Voskhod programme | |
