Margaret (moon) facts for kids
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  57° (to the ecliptic)  
Is a moon of  Uranus  
Physical characteristics  
Mean diameter  ~20 km (estimate)  
Surface area  ~1300 km^{2} (estimate)  
Volume  ~4000 km^{3} (estimate)  
Mass  ~1.0×10^{15} kg (estimate)  
Mean density  ~1.5 g/cm^{3} (estimate)  
Surface gravity  ~0.0023 m/s^{2} (estimate)  
Escape velocity  ~0.005 km/s (estimate)  
Rotation period  ?  
Axial tilt  ?°  
Albedo  0.04 (assumed)  
Surface temp. 


Atmospheric pressure  0 kPa 
Margaret is the only prograde nonspherical moon of Uranus. It was found by Scott S. Sheppard, et al. in 2003 and given the designation S/2003 U 3.
Confirmed as Uranus XXIII, it was named after the servant of Hero in William Shakespeare's play Much Ado About Nothing
Orbit
Margaret stands out as the only prograde nonspherical moon of Uranus. The diagram illustrates the orbital parameters of Margaret, unique among the nonspherical moons of Uranus, with inclination on the vertical axis and the eccentricity of the orbits represented by the segments extending from the pericentre to the apocentre.
Related pages
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Margaret (moon) Facts for Kids. Kiddle Encyclopedia.