Stirling Newberry writes "This image shows "P5," the place holder name for a 5th natural moon of Pluto, a tiny sliver that orbits ~29,000 miles from its primary in a circular orbit. Other than Charon, Hubble has been the means of finding all of the known moons of Pluto." Link to Original Source
Things are not as simple as they seems at first.
- Edward Thorp