AMSAT is a name for amateur radio satellite organizations worldwide, but in particular the Radio Amateur Satellite Corporation (AMSAT) with headquarters at Washington, D.C. AMSAT organizations design, build, arrange launches for, and then operate (command) satellites carrying amateur radio payloads, including the OSCAR series of satellites. Other informally affiliated national organizations exist, such as AMSAT Germany (AMSAT-DL) and AMSAT Japan (JAMSAT).
A CubeSat is a class of miniaturized satellite based around a form factor consisting of 10 cm (3.9 in) cubes. CubeSats have a mass of no more than 2 kg (4.4 lb) per unit, and often use commercial off-the-shelf (COTS) components for their electronics and structure. CubeSats are put into orbit by deployers on the International Space Station, or launched as secondary payloads on a launch vehicle. As of August 2021, more than 1,600 CubeSats have been launched.
A small satellite, miniaturized satellite, or smallsat is a satellite of low mass and size, usually under 1,200 kg (2,600 lb). While all such satellites can be referred to as "small", different classifications are used to categorize them based on mass. Satellites can be built small to reduce the large economic cost of launch vehicles and the costs associated with construction. Miniature satellites, especially in large numbers, may be more useful than fewer, larger ones for some purposes – for example, gathering of scientific data and radio relay. Technical challenges in the construction of small satellites may include the lack of sufficient power storage or of room for a propulsion system.
The year 2008 contained several significant events in spaceflight, including the first flyby of Mercury by a spacecraft since 1975, the discovery of water ice on Mars by the Phoenix spacecraft, which landed in May, the first Chinese spacewalk in September, the launch of the first Indian Lunar probe in October, and the first successful flight of a privately developed orbital launch vehicle by SpaceX's Falcon 1.
Delfi-C3 is a CubeSat satellite constructed by students at the Delft University of Technology in the Netherlands. It is a 3-unit CubeSat, and was launched at 03:53:42 on 28 April 2008, as part of the NLS-4 mission, aboard a PSLV rocket, from the Second Launch Pad at the Satish Dhawan Space Centre in India. The launch was contracted by ISRO, through Antrix Corporation and UTIAS.
Compass-1 is a German amateur CubeSat picosatellite, built and operated in the late 2000s by Aachen University of Applied Science. It was launched by the Indian Space Research Organisation, aboard a PSLV rocket as a secondary payload to the CartoSat-2A primary spacecraft on 28 April 2008. It was launched into a Geocentric orbit with an altitude of 597 km. Its primary mission is remote sensing; however, it also contains some technology demonstration experiments regarding the use of small satellites and GPS tracking.
Explorer-1 [Prime], also known as E1P and Electra, was a CubeSat-class picosatellite built by the Space Science and Engineering Laboratory (SSEL) at Montana State University. It was launched aboard a Taurus-XL rocket from Vandenberg Air Force Base, California on 4 March 2011, but failed to achieve orbit after the rocket malfunctioned.
The year 2011 saw a number of significant events in spaceflight, including the retirement of NASA's Space Shuttle after its final flight in July 2011, and the launch of China's first space station module, Tiangong-1, in September. A total of 84 orbital launches were conducted over the course of the year, of which 78 were successful. Russia, China and the United States conducted the majority of the year's orbital launches, with 35, 19 and 18 launches respectively; 2011 marked the first year that China conducted more successful launches than the United States. Seven crewed missions were launched into orbit during 2011, carrying a total of 28 astronauts to the International Space Station. Additionally, the Zenit-3F and Long March 2F/G carrier rockets made their maiden flights in 2011, while the Delta II Heavy made its last.
Negai☆″ is a Japanese satellite which launched in May 2010. It is a student-built spacecraft, which will be operated by Soka University, and is intended to be used for technology demonstration. The satellite is a single unit CubeSat, and will be used to test a field programmable gate array in orbit. As part of an outreach programme, it will carry the names of selected children, along with wishes they have made. The satellite will return images of the Earth, which will be given to the participating children.
SwissCube-1 is a Swiss satellite operated by École Polytechnique Fédérale de Lausanne (EPFL). The spacecraft is a single unit CubeSat, which was designed to conduct research into nightglow within the Earth's atmosphere, and to develop technology for future spacecraft. It has also been used for amateur radio. It was the first Swiss satellite to be launched.
PW-Sat is a series of satellites that includes the first Polish artificial satellite which was launched 13 February 2012 from ELA-1 at Guiana Space Centre aboard Italian-built Vega launch vehicle during its maiden voyage. PW-Sat1's mission was to test experimental elastic solar cells, as well as an orbital decay technology consisting of a "tail" designed to speed re-entry. It was expected to last for 1 year.
LauncherOne is a two-stage orbital launch vehicle developed and flown by Virgin Orbit that began operational flights in 2021, after being in development from 2007 to 2020. It is an air-launched rocket, designed to carry smallsat payloads of up to 300 kg (660 lb) into Sun-synchronous orbit (SSO), following air launch from a carrier aircraft at high altitude. The rocket is carried to the upper atmosphere on a modified Boeing 747-400, named Cosmic Girl, and released over the Pacific Ocean. Initial work on the program was done by Virgin Galactic, another Virgin Group subsidiary, before a separate entity — Virgin Orbit — was formed in 2017 to complete development and operate the launch service provider business as a separate entity from the passenger-carrying Virgin Galactic business.
ESTCube-1 is the first Estonian satellite and first satellite in the world to attempt to use an electric solar wind sail (E-sail). It was launched on 7 May 2013 aboard Vega VV02 carrier rocket and successfully deployed into orbit. The CubeSat standard for nanosatellites was followed during the engineering of ESTCube-1, resulting in a 10×10×11.35 cm cube, with a volume of 1 liter and a mass of 1.048 kg.
A PocketQube is a type of miniaturized satellite for space research that usually has a size of 5 cm cubed, has a mass of no more than 250 grams, and typically uses commercial off-the-shelf components for its electronics.
Orbital-3, also known as Orb-3, was an attempted flight of Cygnus, an automated cargo spacecraft developed by United States-based company Orbital Sciences, on 28 October 2014. The mission was intended to launch at 22:22:38 UTC that evening. This flight, which would have been its fourth to the International Space Station and the fifth of an Antares launch vehicle, resulted in the Antares rocket exploding seconds after liftoff.
CUTE-1.7 + APD II, or CUTE-1.7 + APD 2, is a Japanese nanosatellite which was launched in 2008 as a follow-up to the CUTE-1.7 + APD satellite. It was built and is operated by the Tokyo Institute of Technology.
Birds-1 was the first iteration of a multinational program called the Joint Global Multi-Nations Birds Satellite project, or Birds project, to help countries build their first satellite. The Japanese Kyushu Institute of Technology (KIT) supported the design and fabrication of the satellites. The constellation was launched by a Falcon 9 rocket to the International Space Station on 3 June 2017, as part of CRS-11, where it was released from the Kibō module into space. Japan, Ghana, Mongolia, Nigeria, and Bangladesh participated in the Birds-1 program, all building identical satellites for the constellation.
UBAKUSAT was a Turkish nanosatellite that was developed by Istanbul Technical University. It was launched into space on board a Falcon-9 rocket in April 2018 and was deployed into its orbit from the International Space Station in May 2018. It was built as a technology demonstration and earth observation satellite to provide voice communications for amateur radio stations around the world. It carried an experimental card, TAMSAT Simplesat, which allowed scientists to test its accuracy of measuring radiation from space. It was the fifth satellite to be built by students of Istanbul Technical University.
