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Delta 2914 | Geos 1

McDonnell Douglas | United States of America
Cape Canaveral SFS, FL, USA
April 20, 1977, 10:15 a.m.
Status: Launch Failure
Mission:

European geostationary scientific satellite. Did not reach the intended orbit

Elliptical Orbit
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Soyuz U | Zenit-2M 76

Russian Federal Space Agency (ROSCOSMOS) | Russia
Baikonur Cosmodrome, Republic of Kazakhstan
April 20, 1977, 9 a.m.
Status: Launch Successful
Mission:

The soviet Zenit-2M (Gektor, 11F690) was an improved version of the Zenit-2 area surveillance reconnaissance satellite. It was part of the Vostok-based Zenit-family.

Low Earth Orbit
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Molniya-M | US-K 6

Russian Space Forces | Russia
Plesetsk Cosmodrome, Russian Federation
April 11, 1977, 1:38 a.m.
Status: Launch Successful
Mission:

Early warning satellite

Elliptical Orbit
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Soyuz U | Zenit-4MK 76

Russian Federal Space Agency (ROSCOSMOS) | Russia
Plesetsk Cosmodrome, Russian Federation
April 7, 1977, 8:59 a.m.
Status: Launch Successful
Mission:

High resolution optical reconnaissance satellite of the Vostok-based Zenit family.

Low Earth Orbit
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Kosmos 11K63 | DS-P1-I 19

Strategic Rocket Forces | Russia
Plesetsk Cosmodrome, Russian Federation
April 5, 1977, 10:30 a.m.
Status: Launch Successful
Mission:

The DS-P1-I series of satellites was used to calibrate space surveillance and early warning radars.

Low Earth Orbit
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Vostok 8A92M | Meteor-1 27 (39L)

RKK Energiya | Russia
Plesetsk Cosmodrome, Russian Federation
April 5, 1977, 2:05 a.m.
Status: Launch Successful
Mission:

The Meteor-1 series was the first series of Soviet meteorological satellites.

Low Earth Orbit
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Kosmos-3M | Oval

Russian Space Forces | Russia
Plesetsk Cosmodrome, Russian Federation
March 29, 1977, 11 p.m.
Status: Launch Successful
Mission:

Scientific satellite with a number of space physics instruments

Low Earth Orbit
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Kosmos-3M | Tselina-O 34

Russian Space Forces | Russia
Plesetsk Cosmodrome, Russian Federation
March 24, 1977, 10:11 p.m.
Status: Launch Successful
Mission:

The Tselina-O (11F616) was one component of two-satellite Tselina ELINT satellite system. Tselina-O provided general ELINT surveillance to be examined in detail by the larger Tselina-D satellites.

Low Earth Orbit
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Molniya-M | Molniya-1K 36

Russian Space Forces | Russia
Plesetsk Cosmodrome, Russian Federation
March 24, 1977, 11:51 a.m.
Status: Launch Successful
Mission:

Military communications satellite in a highly elliptic orbit

Elliptical Orbit
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Soyuz U | Zenit-2M 75

Russian Federal Space Agency (ROSCOSMOS) | Russia
Plesetsk Cosmodrome, Russian Federation
March 17, 1977, 8:30 a.m.
Status: Launch Successful
Mission:

The soviet Zenit-2M (Gektor, 11F690) was an improved version of the Zenit-2 area surveillance reconnaissance satellite. It was part of the Vostok-based Zenit-family.

Low Earth Orbit
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