Margaret (moon)
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| Discovery | |||||||
|---|---|---|---|---|---|---|---|
| Discovered by | Scott S. Sheppard, and David C. Jewitt | ||||||
| Discovered in | August 29, 2003 | ||||||
| Orbital characteristics | |||||||
| Mean radius | 14,345,000 km | ||||||
| Eccentricity | 0.6608 | ||||||
| Orbital period | 1687.01 d | ||||||
| Inclination | 76.26° (to Uranus' equator) 56.63° (to the local Laplace plane) 50.74° (to the ecliptic) | ||||||
| Is a satellite of | Uranus | ||||||
| Physical characteristics | |||||||
| Mean diameter | 11 km | ||||||
| Surface area | ~380 km2 | ||||||
| Volume | ~700 km3 | ||||||
| Mass | 1.0Template:E kg | ||||||
| Mean density | ~1.5 g/cm3 | ||||||
| Surface gravity | ~0.0023 m/s2 | ||||||
| Escape velocity | ~0.005 km/s | ||||||
| Rotation period | ? | ||||||
| Axial tilt | ?° | ||||||
| Albedo | 0.04 (assumed) | ||||||
| Surface temp. |
| ||||||
| Atmospheric pressure | 0 kPa | ||||||
Margaret (mar'-grət, IPA Template:IPA) is a natural satellite of Uranus. It is also known as Uranus XXIII. It was discovered by Scott S. Sheppard, et al. in 2003.
It stands out from the Sycorax group by its inclination, which is only 56.63° (a prograde orbit), whereas all of the Sycorax group moons are retrograde, with inclinations in the 140-170° range. Generally, this would mean it is not likely dynamically connected with the Sycorax group other than by having coincidentally a similar semimajor axis.
It is named after the servant of Hero in William Shakespeare's play Much Ado About Nothing [1]. It was formerly known by the provisional designation S/2003 U 3. The discovery was described in IAU Circular 8217. [2]
| Image:Uranus2 symbol.ant.png Uranus (satellites) edit |
|---|
| Cordelia | Ophelia | Bianca | Cressida | Desdemona | Juliet | Portia | Rosalind | Cupid |
| Belinda | Perdita | Puck | Mab | Miranda | Ariel | Umbriel | Titania | Oberon | Francisco |
| Caliban | Stephano | Trinculo | Sycorax | Margaret | Prospero | Setebos | Ferdinand |
| See also: Pronunciation key | Rings of Uranus |
Template:Astro-stubbs:S/2003 U 3 da:S/2003 U 3 de:Margaret (Mond) fr:Margaret (lune) hr:Margaret (mjesec) pl:S/2003 U 3 sk:Margaret (mesiac) zh:天卫二十三