Kosmos 750 (russian: Космос 750 meaning ''Cosmos 750''), also known as DS-P1-I No.15 was a

satellite A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotope ...

which was used as a

radar Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, w ...

target for

anti-ballistic missile An anti-ballistic missile (ABM) is a surface-to-air missile designed to counter ballistic missiles (missile defense). Ballistic missiles are used to deliver nuclear weapon, nuclear, Chemical weapon, chemical, Bioagent, biological, or conventiona ...

tests. It was launched by the

Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...

in 1975 as part of the

Dnepropetrovsk Sputnik Dnepropetrovsk Sputnik (russian: Днепропетровский Спутник; ua, Дніпропетровський супутник), also known as DS, was a series of satellites launched by the Soviet Union between 1961 and 1982. DS satel ...

programme. It was launched aboard a

Kosmos-2I Kosmos-2I (GRAU Index: 11K63, also known as Cosmos-2I and also known by the designation Kosmos-2) is the designation applied to two Soviet carrier rockets, members of the R-12 Kosmos rocket family, which were used to orbit satellites between 196 ...

63SM rocket, from Site 133/1 at

Plesetsk Plesetsk (russian: Плесе́цк) is an urban locality (a work settlement) and the administrative center of Plesetsky District, Arkhangelsk Oblast, Russia, situated about northeast of Moscow and south of Arkhangelsk. Municipally, it is t ...

. The launch occurred at 09:10 UTC on 17 July 1975. Kosmos 750 was placed into a

low Earth orbit A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in LEO, with an altitude never mor ...

with a

perigee An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any ellip ...

of , an

apogee An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any ellip ...

of , 71 degrees of

inclination Orbital inclination measures the tilt of an object's orbit around a celestial body. It is expressed as the angle between a Plane of reference, reference plane and the orbital plane or Axis of rotation, axis of direction of the orbiting object ...

, and an

orbital period The orbital period (also revolution period) is the amount of time a given astronomical object takes to complete one orbit around another object. In astronomy, it usually applies to planets or asteroids orbiting the Sun, moons orbiting planets ...

of 95.4 minutes. It decayed from orbit on 29 September 1977. Kosmos 750 was the fifteenth of nineteen DS-P1-I satellites to be launched. Of these, all reached orbit successfully except the

seventh Seventh is the ordinal form of the number seven. Seventh may refer to: * Seventh Amendment to the United States Constitution * A fraction (mathematics), , equal to one of seven equal parts Film and television *"The Seventh", a second-season epi ...

References

1975 in spaceflight Kosmos satellites Spacecraft launched in 1975 Dnepropetrovsk Sputnik program {{USSR-spacecraft-stub

See also

References