description WISE 0855−0714 Overview
WISE 0855-0714 is a planetary-mass brown dwarf in the constellation Hydra, about 7.2 light-years from Earth. Identified in infrared data in 2014, it has an estimated effective temperature near 250 kelvins and brightness that is difficult to detect outside the infrared. Observations have provided evidence for water clouds, making the object useful for comparing brown-dwarf atmospheres with those of cold giant planets.
help WISE 0855−0714 FAQ
What is WISE 0855-0714?
WISE 0855-0714 is a planetary-mass brown dwarf in the constellation Hydra. It is about 7.2 light-years from Earth and is one of the coldest known objects of its type.
When was WISE 0855-0714 identified?
It was identified in infrared survey data in 2014. Infrared detection was essential because the object is extremely faint at visible wavelengths.
How cold is WISE 0855-0714?
Its estimated effective temperature is near 250 kelvins, far cooler than ordinary stars. At that temperature, much of its detectable emission is in the infrared rather than visible light.
Is WISE 0855-0714 a planet or a star?
It is classified as a planetary-mass brown dwarf, not an ordinary hydrogen-burning star. Its mass is comparable to that of a planet, but it is a free-floating substellar object rather than a planet known to orbit a star.
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