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STARS-II

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Space Tethered Autonomous Robotic Satellite II or STARS-II , was a nanosatellite built by Japan's Kagawa University to test an electrodynamic tether in low Earth orbit , a follow-on to the STARS mission.

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24-498: STARS-II was launched by an H-IIA rocket, flying in the 202 configuration, as a secondary payload aboard the launch of the GPM Core Observatory on 27 February 2014. After two months in orbit, STARS-II reentered the atmosphere on 26 April 2014. The satellite split into two parts, connected by a 300-metre (980 ft) tether, to conduct its experiments which consisted of recording a video of tether deployment and using

48-654: A pivotal role in satellite launches among Japan's space development activities. Orbital launches take place from the Yoshinobu Launch Complex , lifting off from its two launch pads: The H-IIA first stage engine, the LE-7A , is test-fired at the Yoshinobu Firing Test Stand . Auxiliary buildings are in place for the assembly of new spacecraft and for radar and optical tracking of launched spacecraft. The older Osaki Launch Complex

72-458: Is a spaceborne radar, providing three-dimensional maps of storm structure across its swath, including the intensity of rainfall and snowfall at the surface. The DPR has two frequencies, allowing researchers to estimate the sizes of precipitation particles and detect a wider range of precipitation rates. The Ku-band radar, similar to the PR on TRMM, covers a 245 km (152 mile) swath. Nested inside that,

96-541: Is part of NASA's Earth Systematic Missions program and works with a satellite constellation to provide full global coverage. The project provides global precipitation maps to assist researchers in improving the forecasting of extreme events, studying global climate, and adding to current capabilities for using such satellite data to benefit society. GPM builds on the notable successes of the Tropical Rainfall Measuring Mission (TRMM), which

120-554: Is the largest rocket-launch complex in Japan with a total area of about 9,700,000 square metres (2,400 acres; 970 ha). It is located on the southeastern tip of Tanegashima , an island approximately 40 kilometers (25 mi) south of Kyushu , an island and region in Japan. Construction on the site started in 1966. It was established in 1969 when the National Space Development Agency of Japan (NASDA)

144-624: The Americans or Europeans. The spaceport was completely destroyed in a nuclear bombing raid by Novaya Russia but was rebuilt by the UFAR at the request of their ally, Japan. Episode 2 of the Japanese animated film 5 Centimeters per Second features a rocket launch from Tanegashima Space Center. In the Robotics;Notes visual novel, Tanegashima Space Center is one of the major settings found in

168-514: The GPM Road to Launch Blog, JAXA and NASA developed several outreach activities specific to this mission prior to launch that the public could participate in. After launch a series of featured articles and videos were produced to highlight various scientific goals and discoveries of the mission, and an "Extreme Weather" blog is maintained to provide timely updates about the latest extreme precipitation events and natural disasters occurring around

192-520: The JAXA facility in Japan. Data is provided at multiple "levels" of processing, from raw satellite measurements to best-estimate global precipitation maps using combinations of all the constellation observations and other meteorological data. All data from the mission is made freely available to the public on NASA websites. Precipitation data is made available in a variety of formats, spatial and temporal resolutions, and processing levels which are accessible on

216-592: The Ka-band radar covers a 120 km (74.5 mile) swath. Data from the DPR is sent to the ground via a single-access link with TDRSS relay satellites. The GMI is a passive sensor that observes the microwave energy emitted by the Earth and atmosphere at 13 different frequency/polarization channels. These data allow quantitative maps of precipitation across a swath that is 885 km (550 miles) wide. This instrument continues

240-490: The Precipitation Measurement Missions "Data Access" webpage. Several data visualization and analysis tools have been made available to provide easy access for the science and applications communities, which include the in-browser Earth science data analysis tool Giovanni, a web API, and a 3D near-realtime global precipitation viewer. In addition to maintaining social media accounts and

264-542: The daughter spacecraft became weak, and after several weeks was no longer received. It was inferred that solar battery power was low due to its small body. However, the beacon from the mother spacecraft later became strong, and it was inferred that the solar arrays and antennas were deployed by restarting. However, the Command and Data Handling subsystem did not work, possibly due to radiation. The orbit decayed from 350 km to 280 km in 50 days, considerably faster than

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288-475: The game. It is also featured in the anime. In Captain Earth , Tanegashima Space Center is now controlled by Globe and serves as one of their bases. In the Japanese animated television series Aldnoah.Zero , Tanegashima is the crash landing site of some Martian technology. The video games Pokémon Ruby and Sapphire , along with their remakes , feature the Mossdeep Space Center, which

312-520: The importance of GPM and its positive impact on Earth. In the movie the GPM satellite is launched by the Space Shuttle . A short anime film of 6 minutes, Dual frequency Precipitation Radar Special Movie , was produced by JAXA and White Fox in 2013. Tanegashima Space Center Download coordinates as: The Tanegashima Space Center ( 種子島宇宙センター , Tanegashima Uchū Sentā ) ( TNSC )

336-577: The legacy of TRMM microwave observations, while adding four additional channels, better resolution, and more reliable calibration. Data from the GMI is continuously sent to the ground via a multiple-access link with TDRSS relay satellites. GPM produces and distributes a wide variety of precipitation data products. Processing takes place at the Precipitation Processing System (PPS) at NASA Goddard Space Flight Center , as well as at

360-565: The other cubesats launched on the same mission, which is indirect indication that the tether deployed, increasing the drag. However, telescopic photography of the satellite from the ground showed the satellite as a single point, rather than two objects. The experimenters suggest that this may have been due to the tether extending, but being tangled by rebound. A follow-on to the STARS and STARS-II satellites, STARS-C ( Space Tethered Autonomous Robotic Satellite-Cube , COSPAR 1998-067KR, SATCAT 41895)

384-523: The solar panel, and data on tether deployment was not obtained. Estimates from orbital drag measurements suggest that the tether deployed to a length of about 30 meters. Also other Japanese STARS satellites have been launched, like STARS-ME , Stars-AO and STARS-EC . GPM Core Observatory Global Precipitation Measurement ( GPM ) is a joint mission between JAXA and NASA as well as other international space agencies to make frequent (every 2–3 hours) observations of Earth's precipitation . It

408-486: The tether to deorbit the satellite. The spacecraft consisted of a 5-kilogram (11 lb) base vehicle, with dimensions of 160 by 160 by 253 millimetres (6.3 in × 6.3 in × 10.0 in) and a 4-kilogram (8.8 lb) vehicle at the end of the tether measuring 160 by 160 by 158 millimetres (6.3 in × 6.3 in × 6.2 in). The electrodynamic tether was made from ultra-thin wires of stainless steel and aluminium. One objective of this program

432-577: The world. A Precipitation Education website is also maintained to provide teachers and students with lesson plans, animations, and other resources to teach about the water cycle , Earth science, and the GPM mission. The main character Mohan Bharghav ( Shahrukh Khan ) in 2004 Indian film Swades: We, the People is a Project Manager in NASA's GPM project. The movie starts with a press conference pertaining to NASA's GPM, and its upcoming launch. Bharghav discuss

456-452: Was also a joint NASA-JAXA activity. The project is managed by NASA's Goddard Space Flight Center , and consists of a GPM Core Observatory satellite assisted by a constellation of spacecraft from other agencies and missions. The Core Observatory satellite measures the two and three dimensional structure of Earth's precipitation patterns and provides a new calibration standard for the rest of the satellite constellation. The GPM Core Observatory

480-579: Was announced as a satellite to be launched from the Japanese Experiment Module of the International Space Station . STARS-C was a 2U cubesat consisting of a mother satellite and a daughter satellite, designed to deploy a 100-m aramid fiber tether. It was launched on 9 December 2016, from J-SSOD and re-entered on 3 March 2018. However, the signal quality was intermittent, possibly due to failure of deployment of

504-569: Was assembled and tested at Goddard Space Flight Center, and launched from Tanegashima Space Center , Japan, on a Mitsubishi Heavy Industries H-IIA rocket. The launch occurred on February 28, 2014, at 3:37 am JST on the first attempt. Agencies in the United States, Japan, India and France (together with Eumetsat ) operate the remaining satellites in the constellation for agency-specific goals, but also cooperatively provide data for GPM. GPM has five broad science objectives: The DPR

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528-472: Was formed, and is now run by JAXA . The activities that take place at TNSC include assembly, testing, launching, and tracking satellites, as well as rocket engine firing tests. On-site main facilities include: Those facilities are used for performing operations from assembling launch vehicles, maintenance, inspections, final checks of satellites, loading satellites onto launch vehicles, rocket launches, and tracking launch vehicles after liftoff. The TNSC plays

552-652: Was retired in 1992. It was used for the launch and development of N-I , N-II , H-I and J-I rockets. The Space Science and Technology Museum is near TNSC. It offers an intricate view of rocket history and technology in Japan. In Empire Earth: The Art of Conquest , in the Asian Campaign, the Tanegashima Space Center is an important location, pivotal in the story to the United Federation of Asian Republics reaching Mars before

576-453: Was to demonstrate possible technology for de-orbiting space debris. STARS-II was successfully launched at 3:37am (JST) on 28 February 2014 (27 February UTC), and amateur radio downlink showed that it successfully separated from the carrier vehicle, however, the experiment was only partially successful, and tether deployment could not be confirmed. Initial radio data suggested that the solar arrays and antennas were not deployed. The beacon from

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