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Globus-1M No.12L
Globus-1M #12L or No.12L (russian: Глобус-1М meaning ''Globe-1M''), also known as Raduga-1M 2 (russian: Радуга-1М meaning ''Rainbow-1M'') is a Russian military communications satellite which is operated by the Russian Space Forces. It was the second Raduga-1M satellite to be launched – the first being Globus-1M #11L which was launched in 2008, and forms part of the Raduga satellite system. It is positioned in geostationary orbit at a longitude of 70 degrees East. Globus-1M #12L was built by JSC Information Satellite Systems, and is equipped with multiple transponders broadcasting centimetre-band and decimetre-band signals. It was launched by the Khrunichev State Research and Production Space Centre, using a Proton-M carrier rocket with a Briz-M upper stage. The launch occurred at 00:18:00 GMT on 28 January 2010, from Site 81/24 at the Baikonur Cosmodrome. The launch was successful, and inserted the satellite directly into geosynchronous orbit. At launch the sate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The high frequency radio waves used for telecommunications links travel by line of sight and so are obstructed by the curve of the Earth. The purpose of communications sate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The high frequency radio waves used for telecommunications links travel by line of sight and so are obstructed by the curve of the Earth. The purpose of communications sate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2010 In Spaceflight
The year 2010 saw a number of notable events in worldwide spaceflight activities. These included the first test flight of the SpaceX Dragon commercial resupply spacecraft, which is intended to resupply the International Space Station (ISS), and the maiden flights of the Falcon 9 and Minotaur IV rockets. In June 2010, South Korea conducted a second Naro-1 launch, after the failure of the rocket's maiden flight in 2009; however, the second attempt also failed. The Kosmos-3M was retired from service, making its final flight in April. The Molniya-M was also retired from service, making its final flight in September. Overview The first suborbital launch of 2010 was conducted at 23:00 GMT on 10 January, when a Black Brant IX sounding rocket was launched as a target for the Boeing YAL-1 airborne-laser platform. On 11 January, China conducted an ABM test, involving two missiles. The first orbital launch occurred at 16:12 UTC on 16 January, when a Long March 3C launched the Compa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apsis
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 elliptic orbit. The name for each apsis is created from the prefixes ''ap-'', ''apo-'' (), or ''peri-'' (), each referring to the farthest and closest point to the primary body the affixing necessary suffix that describes the primary body in the orbit. In this case, the suffix for Earth is ''-gee'', so the apsides' names are ''apogee'' and ''perigee''. For the Sun, its suffix is ''-helion'', so the names are ''aphelion'' and ''perihelion''. According to Newton's laws of motion, all periodic orbits are ellipses. The barycenter of the two bodies may lie well within the bigger body—e.g., the Earth–Moon barycenter is about 75% of the way from Earth's center to its surface. If, compared to the larger mass, the smaller mass is negligible (e.g., f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosynchronous Orbit
A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day). The synchronization of rotation and orbital period means that, for an observer on Earth's surface, an object in geosynchronous orbit returns to exactly the same position in the sky after a period of one sidereal day. Over the course of a day, the object's position in the sky may remain still or trace out a path, typically in a figure-8 form, whose precise characteristics depend on the orbit's inclination and eccentricity. A circular geosynchronous orbit has a constant altitude of . A special case of geosynchronous orbit is the geostationary orbit, which is a circular geosynchronous orbit in Earth's equatorial plane with both inclination and eccentricity equal to 0. A satellite in a geostationary orbit remains in the same position in the sky to observers on the surface. Communicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transponder
In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend word, blend of ''transmitter'' and ''responder''. In air navigation or radio frequency identification, a Transponder (aeronautics), flight transponder is an automated transceiver in an aircraft that emits a coded identifying signal in response to an interrogating received signal. In a communications satellite, a Transponder (satellite communications), satellite transponder receives signals over a range of uplink frequencies, usually from a satellite ground station; the transponder amplifies them, and re-transmits them on a different set of downlink frequencies to receivers on Earth, often without changing the content of the received signal or signals. Satellite/broadcast communications A communications satellite’s Communication channel, channels are called transponders because each is a separate transceiver or repeater. With digital video d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longitude
Longitude (, ) is a geographic coordinate that specifies the east–west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek letter lambda (λ). Meridians are semicircular lines running from pole to pole that connect points with the same longitude. The prime meridian defines 0° longitude; by convention the International Reference Meridian for the Earth passes near the Royal Observatory in Greenwich, England on the island of Great Britain. Positive longitudes are east of the prime meridian, and negative ones are west. Because of the Earth's rotation, there is a close connection between longitude and time measurement. Scientifically precise local time varies with longitude: a difference of 15° longitude corresponds to a one-hour difference in local time, due to the differing position in relation to the Sun. Comparing local time to an absolute measure of time allows ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geostationary Orbit
A geostationary orbit, also referred to as a geosynchronous equatorial orbit''Geostationary orbit'' and ''Geosynchronous (equatorial) orbit'' are used somewhat interchangeably in sources. (GEO), is a circular geosynchronous orbit in altitude above Earth's equator ( in radius from Earth's center) and following the direction of Earth's rotation. An object in such an orbit has an orbital period equal to Earth's rotational period, one sidereal day, and so to ground observers it appears motionless, in a fixed position in the sky. The concept of a geostationary orbit was popularised by the science fiction writer Arthur C. Clarke in the 1940s as a way to revolutionise telecommunications, and the first satellite to be placed in this kind of orbit was launched in 1963. Communications satellites are often placed in a geostationary orbit so that Earth-based satellite antennas do not have to rotate to track them but can be pointed permanently at the position in the sky where the sat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raduga (satellite) a Soviet nuclear test
{{disambig ...
Raduga (russian: Радуга:'rainbow') can refer to : * MKB Raduga, a Russian maker of missile systems formerly known as OKB Raduga * VBK-Raduga, an unmanned reentry capsule used to return material from the Russian Mir space station * Raduga (satellite), a series of Russian communications satellites * Raduga Publishers, a publishing house of the Soviet Union * ''Rainbow'' (1944 film), a 1944 film directed by Mark Donskoy * Raduga (radio), a Russian-language music radio station in Lithuania * Raduga (nuclear test) Raduga (in Russian ''Радуга'', ''Rainbow'') is the codename of a Soviet thermonuclear test, conducted on October 20, 1961, in Mityushikha Bay, Severny Island of Novaya Zemlya. The test was conducted by the Northern Fleet. An R-13 missile wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geostationary Orbit
A geostationary orbit, also referred to as a geosynchronous equatorial orbit''Geostationary orbit'' and ''Geosynchronous (equatorial) orbit'' are used somewhat interchangeably in sources. (GEO), is a circular geosynchronous orbit in altitude above Earth's equator ( in radius from Earth's center) and following the direction of Earth's rotation. An object in such an orbit has an orbital period equal to Earth's rotational period, one sidereal day, and so to ground observers it appears motionless, in a fixed position in the sky. The concept of a geostationary orbit was popularised by the science fiction writer Arthur C. Clarke in the 1940s as a way to revolutionise telecommunications, and the first satellite to be placed in this kind of orbit was launched in 1963. Communications satellites are often placed in a geostationary orbit so that Earth-based satellite antennas do not have to rotate to track them but can be pointed permanently at the position in the sky where the sat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Space Forces
The Russian Space Forces ( rus, Космические войска России, Kosmicheskie voyska Rossii, KV) are a branch of the Russian Aerospace Forces, that provides aerospace warning, air and space sovereignty, and other related protection for Russia. Having been reestablished following August 1, 2015 merger between the Russian Air Force and the Russian Aerospace Defence Forces after the independent arm of service was dissolved in 2011. The Russian Space Forces were originally formed on August 10, 1992, alongside the creation of the Russian Armed Forces. The organization shared control of the Baikonur Cosmodrome with Roscosmos, the Federal Space Agency. It also operated the Plesetsk and the Svobodny Cosmodromes. However the Russian Space Forces were dissolved in July 1997 and incorporated into the Strategic Missile Forces. The Russian Space Forces were once again reformed as an independent troop on June 1, 2001, under a military reorganization. However, by December 2011 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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