----------+--------------------+---------------
Name. | Mean Distance from | Periodic Time.
| Centre of Uranus. | Days.
----------+--------------------+---------------
Ariel | 119,000 miles. | 2.520383
Umbriel | 166,000 ” | 4.144121
Titania | 272,000 ” | 8.705897
Oberon | 363,000 ” | 13.463269
----------+--------------------+---------------