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A satellite of Uranus.

[After Umbriel, a gnome in The Rape of the Lock by Alexander Pope.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Celestial Objects) one of the main satellites of Uranus
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in classic literature ?
The poem goes on to tell how Umbriel, a dusky melancholy sprite, in order to make the quarrel worse, flew off to the witch Spleen, and returned with a bag full of "sighs, sobs, and passions, and the war of tongues," "soft sorrows, melting griefs, and flowing tears," and emptied it over Belinda's head.
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Luna Pluto Charon Ceres Europa lo Ganymede Callisto Titan Dione Enceladus Tethys Titania Triton Miranda Ariel Umbriel Oberon lapetus Mimas Students should spend 20-30 minutes researching (using the computer/iPad) and recording their findings (with pencil and research worksheet) about their world.
This is also valid for the orbits of Tethys, Umbriel, Titania and Iapetus.
Counting out from Uranus these are Ariel, Umbriel, Titania, and Oberon (the mnemonic is AUTO), at magnitudes 13.7, 14.5, 13.5, and 13.7, respectively (at mean opposition).
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The other signatories were William Huggins (1824-1910, Figure 11), pioneer astronomical spectroscopist; William Lassell (1799-1880, Figure 12), renowned amateur astronomer and discoverer of Neptune's moon Triton and Uranus' moons Ariel and Umbriel; Edmund Neison (49) (1849-1940, Figure 13), selenographer, and Herbert Sadler (1856-1898).
Finally, the cluster analysis of the major satellites of Uranus indicates that they consist of a larger group of four and Miranda, with the former comprising two sub-groups of (1) Ariel and Umbriel; and (2) Titania and Oberon.
For example, the Uranian satellite Miranda has an anomalously large inclination of 4deg, which is thought to be the result of a chaotic passage through the 3:1 resonance with Umbriel at some time in its orbital history.
QUESTION 15 - for 15 points: Which planet has the moons Miranda, Ariel, Umbriel, Titania and Oberon?