3728 IRAS is a small main beltasteroid. It is 9.76 km in diameter. It is one of the three asteroids discovered by the Infrared Astronomical Satellite in 1983, and was named in honour of the satellite. Image of the main asteroid belt between the orbits of Mars and Jupiter. ... Jump to: navigation, search An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... For the geometric term, see diameter. ... The Infrared Astronomical Satellite (IRAS) was a space-based observatory that performed a survey of the entire sky at infrared wavelengths. ... Jump to: navigation, search 1983 is a common year starting on Saturday of the Gregorian calendar. ...
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The Infrared Astronomical Satellite (IRAS) was a space-based observatory that performed a survey of the entire sky at infrared wavelengths.
IRAS mapped 96% of the sky four times, at 12, 25, 60 and 100 micrometre wavelengths, with resolutions ranging from 0.5' at 12 micrometers to 2' at 100 micrometers.
In IRAS' case, 720 liters of superfluid helium kept the satellite at a temperature of 1.6 kelvins (about −272 °C).