Infographic: Sedna Size Comparison
The artist's rendition shows the newly discovered planet-like object, dubbed 'Sedna,' in relation to other bodies in the Solar System, including Earth and its Moon; Pluto; and Quaoar, a planetoid beyond Pluto that was until now the largest known object beyond Pluto.
The diameter of Sedna is slightly smaller than Pluto's but likely somewhat larger than Quaoar.
Credit: NASA/JPL-Caltech/R. Hurt (SSC-Caltech)