Ursula (crater)

Background

Ursula is a large impact crater on Uranus's moon Titania, with a diameter of about 135 km, making it the second-largest known impact feature on the moon after Gertrude. The crater is disrupted by a series of parallel chasms, and it is cut by Belmont Chasma. Ursula has a flat floor and what appears to be a central pit about 20 km in diameter, though this structure is more likely a series of depressions caused by multiple tectonic faults breaking up the crater floor.

It is probably one of the youngest large impact craters on Titania. The crater is surrounded by smooth plains that have the lowest impact crater density of all geological units on the moon, though they are cut by Belmont Chasma. While these smooth plains could represent an ejecta blanket from the Ursula impact, the lack of similar deposits around Titania's other large craters suggests a cryovolcanic origin, making the regions around Ursula one of the only identified candidate cryovolcanic features on Titania.