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Physical Satellite [2012]

Tama Art University×The University of Tokyo ARTSAT Project


Temperature Layer

Production: INAFUKU Takanobu

Per to (80 ~ 800 [km]) layer of the atmosphere called advanced INVADER satellite art orbit, called 407 [km] altitude, and thermosphere temperature increases with height, the temperature in there is also 1000 about is reached. This altitude, because of the vacuum and microgravity, heat transfer by convection air cooling is not Okoshi-ra and, on the shady side and the large temperature difference is born of sunshine. By repeatedly going pattern was visualized in value this harsh space environment, the temperature sensor of the six sides of each satellite, to generate the various representations.

Solar Band

Production: KOJIMA Junta

Solar cell is affixed to the entire surface of the satellite 6 is an important element of the satellite only serve as a source of energy. In INVADER art satellite, in order to generate a little more power, but to put all six sides of the cube a solar cell. GaAs-based solar cells often used as a solar cell for space, the conversion efficiency as high as 30%, you can produce more power when you rely on the same light. Here, we are represented by color or thickness of the zone on display, the amount of each solar cell surface 6 of INVADER.

Radiation Font

Production: YAMAGUCHI Takahiro

Cosmic radiation is the major problem for astronauts and satellites. Here, the flow of radiation, that will break the outline of a font, you can intuitively feel the invisible radiation. The amount of cosmic radiation, in order to vary greatly depending on altitude, based on the values measured in the radiation sensor on the display, is used to simulate changes in the radiation with altitude. At an altitude of INVADER, the amount of cosmic radiation, and 1 [mSv / day] on average, will be on the strength of the ground hundreds of times.

Geomagnetic Texture

Production: MORI Koichiro

INVADER satellite to art, a magnetic sensor to measure the earth's magnetic field has been installed. By measuring the geomagnetic field, as a compass, you can determine the attitude of the satellite. In INVADER, taking into account the impact on both the temperature and power of the satellite, put a permanent magnet inside the satellite, to stabilize and then to turn to the axis of rotation axis of the geomagnetic the attitude of the satellite further. Here are expressed in the moire pattern, the time variation of magnetic sensor obtained by the simulation.

Gyroscope Metaball

Production: ONISHI Yoshito

Is a gyro sensor that detects the (angular velocity), or are turning at a rate of how much the satellite. for example, has also been used in the Wii remote controller, such as smartphones and iPhone, recently has become fairly familiar to the sensor. Because the sensor "relative angle" is the gyro, in order to determine the attitude of the fact, but must be integral to the value of the sensor, in this case is not an attitude, organic, the relationship between centrifugal force and gravity applied to the satellite has been represented in the movement of the sphere.


Production: HORIGUCHI Junshi, INVADER Development Team

NORAD of the United States on a regular basis, as measured by radar the orbit of the satellite the size of more than 10cm, that are not military secrets are open to the public. The format of the data has been published by NORAD is the format written in text format known as the TLE, the Keplerian orbital elements of the satellite. Here is the assumption that you plan TLE orbital 407 [km] altitude, orbit inclination angle 65 [deg], is used to simulate orbit and attitude state, the sensor of INVADER from there.


Production: KANNO So, INOUE Keisuke, NARITA Tatsuya

Each display is the representation obtained by means of the ARTSAT API, the simulation data from ARTSAT INVADER satellite delivery server in the art. Not only that, but that interface is set to touch on the display and switch to the expression using the data from the sensors in the interface. By manipulating the interface to take in hand, will be able to feel physically, the relationship between the state and representation on the display of the satellite.


Production: HORIGUCHI Junshi, HASHIMOTO Ron

ARTSAT API is a software suite for various commands to pass to the ground station or delivered to the application end users to take advantage of, the various sensor data and status data obtained from the satellite to operate the satellite. ARTSAT API is not limited to the INVADER satellite art, has been designed to be able to adapt to the data of satellite ultra-compact variety, will spread to the common people and designers, and artists, the possibility of the use of satellite data We aim to be the trigger.



List of Works