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Some consider SDO to be a follow-on mission to the Solar and Heliospheric Observatory (SOHO). [8] SDO is a three-axis stabilized spacecraft, with two solar arrays, and two high-gain antennas, in an inclined geosynchronous orbit around Earth. The spacecraft includes three instruments:
The antennas must be able to move fast for tracking of objects in low Earth orbit (LEO). The NEN and Space Network (SN) combined were previously referred to as the Spaceflight Tracking and Data Network (STDN).
Solar Dynamics Observatory (SDO), launched 2010, still operational. Solar Orbiter, launched 2020, still operational. STEREO (Solar TErrestrial RElations Observatory), launched 2006, still operational. Transition Region and Coronal Explorer (TRACE), launched 1998, decommissioned 2010. Ulysses (spacecraft), launched 1990, decommissioned 2009.
The SDO is responsible for leading the ground and crew response to Starliner events that result in cautions or warnings on the space station. Tablet The Tablet position monitors crew usage of the tablet devices and provides assistance/advice to the crew as needed.
Although its inclined orbit still required moving antennas, it was able to relay TV transmissions, and allowed for US President John F. Kennedy to phone Nigerian prime minister Abubakar Tafawa Balewa from a ship on August 23, 1963. [14] [17] Today there are hundreds of geosynchronous satellites providing remote sensing, navigation and ...
FreeFlyer has been used to support many spacecraft missions, for mission planning analysis, operational analysis, or both. Specific mission examples include the International Space Station (ISS), [7] the JSpOC Mission System, [8] the Earth Observing System, [9] [10] Solar Dynamics Observatory (SDO), [11] and Magnetospheric Multiscale Mission (MMS).
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During its first week in space it deployed its high-gain antenna, magnetometer boom, and electric field antennas. [53] The spacecraft performed its first scheduled trajectory correction on 20 August 2018, while it was 8.8 million kilometers (5.5 million mi) from Earth, and travelling at 63,569 kilometers per hour (39,500 mph) [ 54 ]