Hubble Spies Possible New Moons Orbiting Pluto

These Hubble Space Telescope images, taken by the Advanced Camera for Surveys, reveal Pluto, its large moon Charon, and the planet's two new candidate satellites. Between May 15 and May 18, 2005, Charon, and the putative moons, provisionally designated P1 and P2, all appear to rotate counterclockwise around Pluto. P1 and P2 move less than Charon because they are farther from Pluto, and therefore would be orbiting at slower speeds. P1 and P2 are thousands of times less bright than Pluto and Charon. The enhanced-color images of Pluto (the brightest object) and Charon (to the right of Pluto) were constructed by combining short exposure images taken in filters near 475 nanometers (blue) and 555 nanometers (green-yellow). The images of the new satellites were made from longer exposures taken in a single filter centered near 606 nanometers (yellow), so no colour information is available for them.

Credit:

NASA, ESA, H. Weaver (JHU/APL), A. Stern (SwRI), and the Hubble Space Telescope Pluto Companion Search Team

About the Image

NASA press release
NASA caption
Id:opo0519a
Type:Collage
Release date:31 October 2005, 18:45
Size:3000 x 2400 px

About the Object

Name:Charon, Hydra, Nix, Pluto
Type:• Solar System : Planet : Satellite
• Solar System : Interplanetary Body : Dwarf planet
• X - Solar System Images/Videos

Colours & filters

BandWavelengthTelescope
Optical
B
475 nm Hubble Space Telescope
ACS
Optical
V
555 nm Hubble Space Telescope
ACS
Optical
V
606 nm Hubble Space Telescope
ACS

Image Formats

Large JPEG
320.7 KB
Screensize JPEG
78.1 KB

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