Comparison of Kuiper Belt Object Sizes

Artist's Concept of Kuiper Belt Object 2003 UB313 (Non-Annotated)

This is an artist's concept of Kuiper Belt object 2003 UB313 (nicknamed "Xena") and its satellite "Gabrielle." Ground-based observations suggested that Xena was about 30 percent greater in diameter than Pluto, but Hubble's Advanced Camera for Surveys images, taken on Dec. 9 and...

Kuiper Belt Object 2003 UB313

NASA's Hubble Space Telescope resolved Kuiper Belt object "Xena" for the first time and found that it is only just a little larger than Pluto. Ground-based observations suggested that Xena was about 30 percent greater in diameter than Pluto, but Hubble's Advanced Camera for...

Artist's Concept of Kuiper Belt Object 2003 UB313 (Annotated)

This is an artist's concept of Kuiper Belt object 2003 UB313 (nicknamed "Xena") and its satellite Gabrielle. NASA's Hubble Space Telescope observed Xena with the Advanced Camera for Surveys on Dec. 9 and 10, 2005. The Hubble measurements of Xena yielded a diameter of 1,490 miles...