English: This image, taken with the NASA/ESA Hubble Space Telescope, shows the galaxy NGC 4490. The scattered and warped appearance of the galaxy are the result of a past cosmic collision with another galaxy, NGC 4485 (not visible in this image).
The extreme tidal forces of the interaction between the two galaxies have carved out the shapes and properties of NGC 4490. Once a barred spiral galaxy, the outlying regions of NGC 4490 have been stretched out, resulting in its nickname of the Cocoon Galaxy.
Coordinates Position (RA): 12 30 35.94 Position (Dec): 41° 38' 29.08" Field of view: 2.73 x 2.62 arcminutes Orientation: North is 195.0° right of vertical
Colours & filters Band Wavelength Telescope Ultraviolet UV 275 nm Hubble Space Telescope WFC3 Optical U 336 nm Hubble Space Telescope WFC3 Optical B 438 nm Hubble Space Telescope WFC3 Optical y 475 nm Hubble Space Telescope WFC3 Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Optical H-alpha + NIII 657 nm Hubble Space Telescope WFC3
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