Puck (moon) facts for kids
|Discovered by||Stephen P. Synnott / Voyager 2|
|Discovery date||December 30, 1985|
|Avg. distance from the center of its orbital path||86,004.444 ± 0.064 km|
|How long it takes to complete an orbit||0.76183287 ± 0.000000014 d|
|Angle above the reference plane
|0.31921 ± 0.021° (to Uranus' equator)|
|What it orbits||Uranus|
|Size and other qualities|
|Average radius||81 ± 2 km|
|Surface area||~82,400 km²|
|Average density||~1.3 g/cm³ (assumed)|
|Surface gravity||0.028 m/s2|
|Escape velocity||0.069 km/s|
|Angle at which it turns
(in relation to its orbit)
|How much light it reflects||0.11 ± 0.1 (at 0.55 μm)|
|Avg. surface temp.||~64 K|
In Celtic mythology and English folklore, a Puck is a mischievous sprite, imagined as an evil demon by Christians; the moon is named after the Puck who appears in Shakespeare's A Midsummer Night's Dream, in which he travels around the globe at night with the fairies. It is also designated Uranus XV.
Puck is the biggest of the small closer moons to Uranus. It is in the middle in size between Portia and Miranda, the smallest of the five bigger moons. Puck's orbit is also located between these two moons. Little is known about it aside from its orbit, its radius about 81 km, and its geometric albedo approximately 0.11.
Of the moons found by the Voyager 2 imaging team, only Puck was found early enough that the probe could be programmed to take pictures of it in some detail. Images showed that Puck has a shape of a slightly prolate spheroid (ratio between axises is 0.97 ± 0.04). Its surface is heavily cratered and is grey in color. There are three named craters on the surface of Puck. Observations with Hubble Space Telescope and large terrestrial telescopes found water ice absorption features in the spectrum of Puck.
Images for kids
Puck (moon) Facts for Kids. Kiddle Encyclopedia.