Vostok 4

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Vostok 4
Mission insignia
Mission statistics
Mission name Vostok 4
Spacecraft mass 4728 kg
Crew size 1
Call sign Беркут (Berkut - "Golden Eagle")
Launch date August 12, 1962
08:02:33 UTC
Gagarin's Start
Landing August 15, 1962
06:59 UTC
48°9′N, 71°51′E
Mission duration 2d/22:56
Number of orbits 48
Apogee 211 km
Perigee 159 km
Orbital period 88.2 minutes
Orbital inclination 65.0°
Related missions
Previous mission Next mission
Vostok 3 Vostok 5

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.

[edit] Crew

Number in parentheses indicates number of spaceflights by each individual prior to and including this mission.

[edit] Backup crew

[edit] Reserve crew