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Coldest Dwarf

WISE 1828+2650 is located in the constellation Lyra. The blue dots are a mix of stars and galaxies.

August 23, 2011 - Reigning Title-Holder for Coldest Brown Dwarf

NASA's Wide-field Infrared Survey Explorer, or WISE, has uncovered the coldest brown dwarf known so far (green dot in very center of this infrared image). Called WISE 1828+2650, this chilly star-like body isn't even as warm as a human body, at less than about 80 degrees Fahrenheit (25 degrees Celsius). Like other brown dwarfs, it began life like a star, collapsing under its own weight into a dense ball of gas. But, unlike a star, it didn't have enough mass to fuse atoms at its core, and shine steadily with starlight. Instead, it has continued to cool and fade since its birth, and now gives off only a feeble amount of infrared light. WISE's highly sensitive infrared detectors were able to catch the glow of this object during its all-sky scan, which lasted from Jan. 2010 to Feb. 2011.

WISE 1828+2650 is located in the constellation Lyra. The blue dots are a mix of stars and galaxies.

This view shows three of WISE's four infrared channels, color-coded blue, green and red, with blue showing the shortest infrared wavelengths and red, the longest.

Image credit: NASA/JPL-Caltech/UCLA

-About the Objects-
Names: WISE 1828+2650

Type: Star > Brown Dwarf

Distance:  between 9 and 40 light-years

Temperature:  298 K (80 F)

-About the Images-
Postion of Objects (J2000):
RA=18h 28m 31s; Dec=+26° 50’37"

Constellation: Lyra

Field of View: 0.333 x 0.333 degrees

Orientation: North is up

Color Mapping: Blue=3.4 microns; Cyan=4.6 microns; Red=22 microns

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