IRAS in the context of 283 Emma

⭐ Core Definition: IRAS

The Infrared Astronomical Satellite (Dutch: Infrarood Astronomische Satelliet) (IRAS) was the first space telescope to perform a survey of the entire night sky at infrared wavelengths. Launched on 25 January 1983, its mission lasted ten months. The telescope was a joint project of the United States (NASA), the Netherlands (NIVR), and the United Kingdom (SERC). Over 250,000 infrared sources were observed at 12, 25, 60, and 100 micrometer wavelengths.

Support for the processing and analysis of data from IRAS was contributed from the Infrared Processing and Analysis Center at the California Institute of Technology. Currently, the Infrared Science Archive at IPAC holds the IRAS archive.

↓ Menu

HINT:

👉 IRAS in the context of 283 Emma

283 Emma is a large asteroid of the asteroid belt and the namesake of the Emma family. It was discovered by Auguste Charlois on 8 February 1889, in Nice, France. The reason for its name is unknown.

Measurements made with the IRAS observatory give a diameter of 145.70±5.89 km and a geometric albedo of 0.03±0.01. By comparison, the MIPS photometer on the Spitzer Space Telescope gives a diameter of 145.44±7.72 km and a geometric albedo of 0.03±0.01. When the asteroid was observed occulting a star, the results showed a diameter of 148.00±16.26 km.

↓ Explore More Topics

In this Dossier

⭐ Core Definition: IRAS
👉 IRAS in the context of 283 Emma
IRAS in the context of Spitzer Space Telescope

IRAS in the context of Spitzer Space Telescope

The Spitzer Space Telescope, formerly the Space Infrared Telescope Facility (SIRTF), was an infrared space telescope that was active between 2003 and 2020. Spitzer was the third space telescope dedicated to infrared astronomy, following IRAS (1983) and ISO (1995–1998). It was the first spacecraft to use an Earth-trailing orbit, later used by the Kepler planet-finder.

The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments were no longer usable. However, the two shortest-wavelength modules of the IRAC camera continued to operate with the same sensitivity as before the helium was exhausted, and continued to be used into early 2020 in the Spitzer Warm Mission.

View the full Wikipedia page for Spitzer Space Telescope

↑ Return to Menu

IRAS Study page number 1 of 1

Play TriviaQuestions Online!

Skip to study material about IRAS in the context of "283 Emma"

⭐ Core Definition: IRAS

👉 IRAS in the context of 283 Emma

IRAS in the context of Spitzer Space Telescope