STS-121 was a 2006 NASA Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Discovery. The main purposes of the mission were to test new safety and repair techniques introduced following the Columbia disaster of February 2003 as well as to deliver supplies, equipment and European Space Agency (ESA) astronaut Thomas Reiter from Germany to the ISS.
Low Earth OrbitThese spacecraft are probably the replacement for the Trumpet SIGINT satellites operating in a Molniya orbit. As no name is known, these are referred here as "Trumpet Follow On". Possibly these satellites might be named Raven. These satellite most likely use a large, unfurlable dish antenna to collect the signals. Advances in both antenna and electronics technologies have allowed for a large reduction in size compared the Trumpet predecessors.
High Earth OrbitUS-PM (Upravlenniye Sputnik Passivny Modifikirovanny) (also reported as US-PU) was a solar powered improved EORSAT (Electronic Ocean Reconnaissance Satellite). It used an passive ELINT devices to track naval vessels from space by registering their electronic emmissions.
Low Earth OrbitMITEx (Micro-Satellite Technology Experiment) is an experimental U.S. military project to test whether the advanced technologies embedded in two miniature satellites and a new upper stage kick motor can operate through the rigors of spaceflight. MiTEx will investigate and demonstrate advanced space technologies such as lightweight power and propulsion systems, avionics and spacecraft structures; commercial-off-the-shelf processors; affordable, responsive fabrication/build-to-launch techniques; and single-string components. The MITEx experiment will be deployed into a geostationary transfer orbit (GTO), from which the MITEx Upper stage will put the experiments into a geostationary orbit (GEO).
Geostationary OrbitGalaxy 16 is a C- and Ku-band satellite with 24 C-band and 24 Ku-band transponders. The spacecraft is a version of SS/L's space-proven SSL-1300 satellite platform, which has an excellent record of reliable operation. The geostationary SSL-1300 has a designed service life of 15 years and maintains station-keeping and orbital stability by using bipropellant propulsion and momentum-bias systems.
Geostationary OrbitKazSat 1, the first kazakh communications satellite, features 8 Ku-band transponders for fixed communications and 4 Ku-band transponders for TV-transmissions and is intended for telecast, fixed satellite communication and data transmission for Kazakhstan and central asia.
Geostationary OrbitThe Russian Resurs-DK 1 (46KS) satellite is mainly designed to image and transmit data on information for Earth natural resources study, data on ecology and emergency, sea surface status, ice situation, meteorological conditions in Earth polar regions, as well as to support digital data exchange between ground users. The satellite is continuously oriented towards the Earth in order to fulfill this program of Earth surface observation. The spacecraft was built by TsSKB Progress in Samara. It is based on the military Yantar-4KS1M (Neman) imaging satellite. The main sensor of the spacecraft is the Geoton-L1 optoelectronic push-broom imager. Panchromatic resolution at an altitude of 360 km is 0.9 m, at an altitude of 604 km it is 1.5 m. Multispectral resolution is between 1.5 and 2 m.
Low Earth OrbitSatmex-6 is a geostationary communication satellite used to provide communication to the Americas, Hawaii and the Caribbean. Thaicom 5 is operated by Thaicom and provides communications to Asia, Africa, Europe and Autstralia for a geostationary orbit.
Geostationary Transfer Orbit