# Does Ceres have an exosphere similar to the Moon?

Thinking about the question and answers for Does the Moon have any oxygen in its atmosphere? begs the question, despite being considerably smaller than the Moon and further away from the sun, does Ceres have a similar atmosphere as the Moon?

• Nov 10 '13 at 5:33

A 1992 ultraviolet study of Ceres found $OH$ emission, consistent with escaping water, and suggesting a ice cap.
But a more recent study with the more sensitive VLT did not detect $OH$, limiting the maximum amount of water produced per second to $7 \times 10^{25}$ molecules per second at the time of the observation.