Kedr (russian: кедр meaning ''

Siberian pine ''Pinus sibirica'', or Siberian pine, in the family Pinaceae is a species of pine tree that occurs in Siberia from 58°E in the Ural Mountains east to 126°E in the Stanovoy Range in southern Sakha Republic, and from Igarka at 68°N in the lower ...

'';

Yuri Gagarin Yuri Alekseyevich Gagarin; Gagarin's first name is sometimes transliterated as ''Yuriy'', ''Youri'', or ''Yury''. (9 March 1934 – 27 March 1968) was a Soviet pilot and cosmonaut who became the first human to journey into outer space. T ...

's callsign during the

Vostok 1 Vostok 1 (russian: link=no, Восток, ''East'' or ''Orient'' 1) was the first spaceflight of the Vostok programme and the first human orbital spaceflight in history. The Vostok 3KA space capsule was launched from Baikonur Cosmodrome on Apr ...

mission), also known as ARISSat 1 and RadioSkaf-2 (formerly known as SuitSat 2), was an amateur radio

minisatellite A minisatellite is a tract of repetitive DNA in which certain DNA motifs (ranging in length from 10–60 base pairs) are typically repeated 5-50 times. Minisatellites occur at more than 1,000 locations in the human genome and they are notable for ...

operated by

RKK Energia PAO S. P. Korolev Rocket and Space Corporation Energia (russian: Ракетно-космическая корпорация «Энергия» им. С. П. Королёва, Raketno-kosmicheskaya korporatsiya "Energiya" im. S. P. Korolyov ...

as part of the Amateur Radio on the International Space Station and RadioSkaf programmes. A follow-up to the

SuitSat SuitSat (also known as SuitSat-1, Mr. Smith, Ivan Ivanovich, RadioSkaf, Radio Sputnik, and AMSAT-OSCAR 54) was a retired Russian Orlan space suit with a radio transmitter mounted on its helmet, used as a hand-launched satellite. First devised ...

spacecraft, Kedr was launched to commemorate the fiftieth anniversary of the

mission. Kedr transmitted 25 greetings in 15 different languages. It also transmitted photos of the

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...

telemetry Telemetry is the in situ collection of measurements or other data at remote points and their automatic transmission to receiving equipment (telecommunication) for monitoring. The word is derived from the Greek roots ''tele'', "remote", an ...

and scientific data, voice, telemetry and

slow-scan television Slow-scan television (SSTV) is a picture transmission method, used mainly by amateur radio operators, to transmit and receive static pictures via radio in monochrome or color. A literal term for SSTV is narrowband television. Analog broadcast tel ...

data on a frequency of 145.950 MHz. The satellite was also intended for use in educational programmes. Kedr was a satellite measuring by by . It carried

solar cell A solar cell, or photovoltaic cell, is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.

s to generate power, and was expected to operate for six months. For launch, Kedr was stored aboard the Progress M-09M spacecraft, which was launched to resupply the

International Space Station The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA ( ...

. Progress M-09M was launched atop a

Soyuz-U The Soyuz-U launch vehicle was an improved version of the original Soyuz rocket. Soyuz-U was part of the R-7 family of rockets based on the R-7 Semyorka missile. Members of this rocket family were designed by the TsSKB design bureau and cons ...

carrier rocket flying from Site 1/5 at the Baikonur Cosmodrome at 01:31:39 UTC on 28 January 2011. It docked with the International Space Station at 02:39 UTC on 30 January. Kedr was deployed from the ISS by Sergey Volkov during an extra-vehicular activity on 3 August 2011 and re-entered Earth's atmosphere on 4 January 2012, having spent 154 days in orbit. "KEDR" was also used as the suffix for several Russian amateur radio

Call sign In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally assign ...

s (for example, RS0KEDR) that were active in 2014 around the 80th anniversary of Gagarin's birth.

References

External links

Spacecraft launched in 2011 Satellites orbiting Earth Spacecraft which reentered in 2012 Amateur radio satellites Satellites deployed from the International Space Station {{Russia-spacecraft-stub