<Table> Spitzer Space Telescope <Tr> <Td_colspan="2"> Artist rendering of the Spitzer Space Telescope </Td> </Tr> <Tr> <Th> Names </Th> <Td> Space Infrared Telescope Facility </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Mission type </Th> <Td> Infrared space telescope </Td> </Tr> <Tr> <Th> Operator </Th> <Td> NASA / JPL / Caltech </Td> </Tr> <Tr> <Th> COSPAR ID </Th> <Td> 2003 - 038A </Td> </Tr> <Tr> <Th> SATCAT no . </Th> <Td> 27871 </Td> </Tr> <Tr> <Th> Website </Th> <Td> http://www.spitzer.caltech.edu/ </Td> </Tr> <Tr> <Th> Mission duration </Th> <Td> Planned: 2.5 to 5 + years Primary mission: 5 years, 8 months, 19 days Elapsed: 14 years, 10 months, 16 days </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Spacecraft properties </Th> </Tr> <Tr> <Th> Manufacturer </Th> <Td> Lockheed Ball Aerospace </Td> </Tr> <Tr> <Th> Launch mass </Th> <Td> 950 kg (2,094 lb) </Td> </Tr> <Tr> <Th> Dry mass </Th> <Td> 884 kg (1,949 lb) </Td> </Tr> <Tr> <Th> Payload mass </Th> <Td> 851.5 kg (1,877 lb) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Start of mission </Th> </Tr> <Tr> <Th> Launch date </Th> <Td> 25 August 2003, 05: 35: 39 (2003 - 08 - 25UTC05: 35: 39) UTC </Td> </Tr> <Tr> <Th> Rocket </Th> <Td> Delta II 7920H </Td> </Tr> <Tr> <Th> Launch site </Th> <Td> Cape Canaveral SLC - 17B </Td> </Tr> <Tr> <Th> Entered service </Th> <Td> 18 December 2003 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Orbital parameters </Th> </Tr> <Tr> <Th> Reference system </Th> <Td> Heliocentric </Td> </Tr> <Tr> <Th> Regime </Th> <Td> Earth - trailing </Td> </Tr> <Tr> <Th> Eccentricity </Th> <Td> 0.011 </Td> </Tr> <Tr> <Th> Perihelion </Th> <Td> 1.003 AU </Td> </Tr> <Tr> <Th> Aphelion </Th> <Td> 1.026 AU </Td> </Tr> <Tr> <Th> Inclination </Th> <Td> 1.13 ° </Td> </Tr> <Tr> <Th> Period </Th> <Td> 373.2 days </Td> </Tr> <Tr> <Th> Epoch </Th> <Td> 16 March 2017 00: 00: 00 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Main telescope </Th> </Tr> <Tr> <Th> Type </Th> <Td> Ritchey--Chrétien </Td> </Tr> <Tr> <Th> Diameter </Th> <Td> 0.85 m (2.8 ft) </Td> </Tr> <Tr> <Th> Focal length </Th> <Td> 10.2 m (33 ft) </Td> </Tr> <Tr> <Th> Wavelengths </Th> <Td> infrared, 3.6--160 μm </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th_colspan="2"> show Instruments </Th> </Tr> <Tr> <Th> IRAC </Th> <Td> Infrared Array Camera </Td> </Tr> <Tr> <Th> IRS </Th> <Td> Infrared Spectrograph </Td> </Tr> <Tr> <Th> MIPS </Th> <Td> Multiband Imaging Photometer for Spitzer </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td_colspan="2"> <P> </P> Great Observatories program ← Chandra </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Artist rendering of the Spitzer Space Telescope </Td> </Tr>

What wavelength light does the spitzer space telescope measure