Pluto's Thermal Environmentextracted from Thermal Environments JPL D-8160
Perihelion Aphelion Mean
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Direct Solar 1.56 W/sqM 0.56 W/sqM 0.88 W/sqM
Albedo 0.47 0.47 0.47
(subsolar peak)
Planetary IR. 0.8 W/sqM 0.3 W/sqM 0.5 W/sqM
But we can launch a mission to Pluto only when Jupiter is in the right place. The next opportunity occurs in the year 2001. A Pluto-bound spacecraft launched then would pass Jupiter in 2006 and arrive at Pluto in 2015. The planet Pluto has a fairly high albedo. Its thermal environment are so low that it could almost be ignored except for very sensitive instruments and detectors.
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