Kosmos 2470 (russian: Космос 2470, italic=yes meaning ''Cosmos 2470''), also known as Geo-IK-2 No.11, was a Russian

geodesy Geodesy ( ) is the Earth science of accurately measuring and understanding Earth's figure (geometric shape and size), orientation in space, and gravity. The field also incorporates studies of how these properties change over time and equivale ...

satellite launched in 2011. The first

Geo-IK-2 The Geo-IK-2 is a Russian series of new generation military geodesy satellites replacing the Soviet Union's Geo-IK and Sfera constellations. They are intended to be used to create high precision three-dimensional maps of the Earth's surface, and t ...

satellite, it was intended to be used to create a three-dimensional map of the Earth's surface, and to monitor

plate tectonics Plate tectonics (from the la, label=Late Latin, tectonicus, from the grc, τεκτονικός, lit=pertaining to building) is the generally accepted scientific theory that considers the Earth's lithosphere to comprise a number of large ...

. The satellite was produced by

ISS Reshetnev JSC Information Satellite Systems Reshetnev (russian: Информационные спутниковые системы имени академика М. Ф. Решетнёва, Informatsionnye sputnikovye systemy imeny akademika M. F. Reshetnyov ...

, and has a mass of around . It was intended to operate in a circular orbit at an altitude of around above the Earth's surface; however, it was placed into a lower than planned orbit after its launch failed. A second Geo-IK-2 satellite was successfully launched on June 4th, 2016 as Kosmos 2517.

History

Geo-IK-2 No.11 was launched by a

Rokot Rokot (russian: Рокот meaning ''Rumble'' or ''Boom''), also transliterated Rockot, was a Russian space launch vehicle that was capable of launching a payload of into a Earth orbit with 63° inclination. It was based on the UR-100N (SS-1 ...

rocket with a

Briz-KM The Briz-K, Briz-KM and Briz-M (russian: Бриз-К, КM and M meaning ''Breeze-K, KM and M'') are Russian liquid-propellant rocket orbit insertion upper stages manufactured by Khrunichev State Research and Production Space Center and used on t ...

upper stage. The launch took place from Site 133/3 at the

Plesetsk Cosmodrome Plesetsk Cosmodrome ( rus, Космодром «Плесецк», r=Kosmodrom "Plesetsk", p=kəsmɐˈdrom plʲɪˈsʲet͡sk) is a Russian spaceport located in Mirny, Arkhangelsk Oblast, about 800 km north of Moscow and approximately 200&n ...

, at 14:00 UTC on 1 February 2011. The Rokot performed as expected, and the Briz-KM made the first of two burns to place the satellite into its operational orbit. When the second burn was scheduled to begin, the Briz-KM failed to reignite, leaving the spacecraft in its transfer orbit. Controllers were unable to make contact with the satellite after launch as had been expected, although a day after launch they were able to establish communications with it. Before its orbit decayed from

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 ...

, it flew 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 and 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 ,

inclined Incline, inclined, inclining, or inclination may refer to: *Grade (slope), the tilt, steepness, or angle from horizontal of a topographic feature (hillside, meadow, etc.) or constructed element (road, railway, field, etc.) *Slope, the tilt, steepn ...

at 99.4 degrees. On 24 February 2011, Deputy Defence Minister

Vladimir Popovkin Vladimir Aleksandrovich Popovkin (russian: Владимир Александрович Поповкин; 25 September 1957 – 18 June 2014) was the General Director of the Russian Federal Space Agency and former First Deputy Defense Minister of R ...

announced that the satellite would be unable to fulfill its mission and thus would not be used by Russian defence forces. He added that it might still be possible to use the satellite for "checking control systems". On 1 March the satellite's orientation systems malfunctioned, and the spacecraft moved out of alignment with the Sun, resulting in its solar panels being unable to generate electricity. The spacecraft subsequently began to tumble. Engineers believed that it was unlikely that control would be re-established. It re-entered Earth's atmosphere on July 15, 2013.

Follow-ons

A second Geo-IK-2 satellite was successfully launched on June 4th, 2016 as Kosmos 2517.

References

{{DEFAULTSORT:Kosmos 2470 Spacecraft launched in 2011 Satellite launch failures Kosmos satellites Spacecraft which reentered in 2013 Space accidents and incidents in Russia