Observation • September 10th, 2013 • sig13-010a
With the help of NASA's Spitzer Space Telescope, astronomers have discovered that what was thought to be a large asteroid called Don Quixote is in fact a comet.
Don Quixote's coma and tail -- features of comets -- as revealed in infrared light by Spitzer. The coma appears as a faint glow around the center of the body, caused by dust and gas. The tail points towards the right-hand side of Don Quixote, into the direction opposite of the sun.
About the Object
|Infrared||4.5 µm||Spitzer IRAC|