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Vostok 4

By Wikipedia,
the free encyclopedia,


Vostok 4
Mission insignia
Mission statistics
Mission name Vostok 4
Spacecraft type Vostok 3KA
Spacecraft mass 4,728 kg (10,420 lb)
Crew size 1
Call sign Беркут (Berkut - Golden Eagle)
Booster Vostok 8K72K
Launch pad Gagarin's Start, Baikonur Cosmodrome[1]
Launch date August 12 1962 08:02:33 (1962-08-12T08:02:33) UTC
Landing site 48°9′N 71°51′E / 48.15°N 71.85°E / 48.15; 71.85
Landing August 15 1962 06:59 (1962-08-15T07:00)
Mission duration 2d/22:56
Number of orbits 48
Apogee 211 km (131 mi)
Perigee 159 km (99 mi)
Orbital period 88.2 minutes
Orbital inclination 65.0°
Related missions
Previous mission Next mission
Vostok 3 Vostok 5

Vostok 4 (Russian: Восток-4, Orient 4 or East 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 Vostok capsules came within 5 km (3.1 mi) 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 (50 °F). The flight was terminated early after a misunderstanding by ground control, who believed that Popovich had given them a codeword 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.


Position Cosmonaut
Pilot Pavel Popovich
First spaceflight

Backup crew

Position Cosmonaut
Pilot Vladimir M. Komarov

Reserve crew

Position Cosmonaut
Pilot Boris Volynov

Text from Wikipedia is available under the Creative Commons Attribution/Share-Alike License; additional terms may apply.

Published in July 2009.

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