Salacia

Jun. 26th, 2012 01:46 pm
steorra: Jupiter's moon Europa (europa)
[personal profile] steorra posting in [community profile] astronomy
(Cross-posted from my own journal.)

According to recent research, the trans-Neptunian object Salacia seems to be about 900 km in diameter - that makes it about the same size as Ceres and Orcus and Quaoar. This is a bit of a surprise; it seems that Salacia is actually quite dark, reflecting only about 3 or 4 of the light that falls on it. Previous estimates of its size were based on assumptions that it reflected a higher percentage of light, which led to smaller estimated sizes.

Emily Lakdawalla explains in more detail here.
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