29 September 1972, 20:18:59 (1972-09-29UTC20:18:59Z) UTC
Rocket
Kosmos-3M
Launch site
Plesetsk 132/2
Orbital parameters
Reference system
Geocentric
Regime
Low Earth
Perigee altitude
987 kilometres (613 mi)
Apogee altitude
992 kilometres (616 mi)
Inclination
65.8 degrees
Period
104.9 minutes
Kosmos 521 (Russian: Космос 521 meaning Cosmos 521), also known as DS-P1-M No.4 is a satellite which was intended for use as a target for tests of anti-satellite weapons. It was launched by the Soviet Union in 1972 as part of the Dnepropetrovsk Sputnik programme,[1] and was to have been used as a target for an IS-A interceptor, as part of the Istrebitel Sputnikov programme. A malfunction aboard the satellite rendered it useless, and the interceptor was not launched.[2]
It was launched aboard a Kosmos-3M carrier rocket,[3] from Site 132/2 at the Plesetsk Cosmodrome. The launch occurred at 20:18:59 UTC on 29 September 1972.[4]
Kosmos 521 was placed into a low Earth orbit with a perigee of 987 kilometres (613 mi), an apogee of 992 kilometres (616 mi), 65.8 degrees of inclination, and an orbital period of 104.9 minutes.[1] No attempt to intercept the satellite was made after its onboard telemetry system malfunctioned. As of 2009, it is still in orbit.[2][5] Western analysts did not identify Kosmos 521 as being associated with the Soviet ASAT programme until records were declassified.
Kosmos 521 was the last of the five original DS-P1-M satellites to be launched,[1] of which all but the first were successfully reached orbit. Despite its successful launch, the satellite malfunctioned shortly after reaching orbit, and was unusable. Subsequent launches used a modified version of the DS-P1-M, known as Lira.[6]
^ abcWade, Mark. "DS-P1-I". Encyclopedia Astronautica. Archived from the original on 5 January 2009. Retrieved 29 May 2009.
^ abWade, Mark. "IS-A". Encyclopedia Astronautica. Archived from the original on 22 January 2012. Retrieved 29 May 2009.
^McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 29 May 2009.
^Wade, Mark. "Kosmos 3". Encyclopedia Astronautica. Archived from the original on 6 September 2008. Retrieved 29 May 2009.
^McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 29 May 2009.
^Wade, Mark. "DS". Encyclopedia Astronautica. Archived from the original on 31 March 2009. Retrieved 29 May 2009.
aboard a Kosmos-3M carrier rocket, from Site 132/2 at the Plesetsk Cosmodrome. The launch occurred at 20:18:59 UTC on 29 September 1972. Kosmos521 was placed...
programme, and used as a target for Kosmos 462, as part of the Istrebitel Sputnikov programme. It was launched aboard a Kosmos-3M carrier rocket, from Site 132/1...
development experiments for the Soviet armed forces. A Kosmos-2M 63S1M carrier rocket was used to launch Kosmos 95 into low Earth orbit. The launch took place...
(2001:147). De Vries, Jan (20 April 2011). Die Götter – Vorstellungen über den Kosmos – Der Untergang des Heidentums (in German). Berlin: De Gruyter. p. 320....
self-definition. Kosmos: essays in Order, Conflict and Community in Classical Athens (coauthor Paul Millett; (2002), Cambridge University Press. ISBN 0-521-52593-4...
Holmiae, Facsimile 1956 Jarrolds Norwich, 1758 Dick Jones: Der Kosmos Spinnenführer. Franckh Kosmos Verlag, 1990, ISBN 3-4400-6141-8 F. Dahl, M. Dahl: 3. Spinnentiere...
Planetary Tectonics. Cambridge University Press. pp. 81–120. ISBN 978-0-521-76573-2. Archived from the original on 23 June 2016. Retrieved 18 October...
founded in September 1968. In 1957, Hellenic/Greek language newspaper Neos Kosmos was founded by Dimitri Gogos, Bill Stefanou and Alekos Doukas, the latter...
families and several cometary trails. According to Alexander von Humboldt's Kosmos, Mesoamericans were aware of the zodiacal light before 1500. It was perhaps...
originating with Heraclitus, "idios kosmos", meaning "private world" as distinguished from the "common world" (koinos kosmos) was adopted by phenomenological...
did not necessarily include the void. Another synonym was ὁ κόσμος (ho kósmos) meaning 'the world, the cosmos'. Synonyms are also found in Latin authors...
pp. 199–200. Hélène (4 March 2021). "Everlasting Glory in Athens". The Kosmos Society. Archived from the original on 27 July 2022. Retrieved 10 July 2023...
Socialism, 1917–1945. Cambridge: Cambridge University Press. ISBN 978-0-521-84512-0. Kershaw, Ian (1999) [1998]. Hitler: 1889–1936: Hubris. New York:...
of Kosmos. One scholar, who stresses the importance of Humboldt's Political Essay on the Kingdom of New Spain as essential reading, dismisses Kosmos as...
2020). "Tongues of Greek Australia: An Anglicised Hellenic language". Neos Kosmos. Retrieved 22 October 2023. cf. Iotacism G. Th. Pavlidis and V. Giannouli...
Cosmochemistry (from Ancient Greek κόσμος (kósmos) 'universe', and χημεία (khēmeía) 'chemistry') or chemical cosmology is the study of the chemical composition...
and Austria. Cambridge; New York: Cambridge University Press. ISBN 978-0-521-85683-6. Ayçoberry, Pierre (1999). The Social History of the Third Reich...
124–125. Longerich 2012, p. 370. Longerich 2012, p. 371. Evans 2005, p. 521. Evans 2005, p. 515. Proctor 1999, p. 196. Proctor 1999, p. 198. Proctor...
Twentieth-Century Political Thought. Cambridge University Press. ISBN 978-0-521-56354-3 – via Google Books. Baranski, Zygmunt G.; West, Rebecca J. (2001)...
appeared in 1850, in the third volume of von Humboldt's Kosmos: Alexander von Humboldt, Kosmos, vol. 3 (Stuttgart & Tübingen, (Germany): J. G. Cotta, 1850)...
spacecraft launched three times between 1971 and 1973. The first of which, Kosmos 419, was intended to become the first spacecraft to orbit Mars, beating...
the Nazis. Cambridge and New York: Cambridge University Press. ISBN 978-0-521-61794-9. Broucek, Peter (2008). Militärischer Widerstand: Studien zur österreichischen...
Global Information