Key facts
- Discovered by
- Scott S. Sheppard David C. Jewitt
- Discovery date
- August 29, 2003
- Designation
- Uranus XXIII
- Pronunciation
- / ˈ m ɑːr ɡ ər ə t /
- Adjectives
- Margaretian / ˌ m ɑːr ɡ ə ˈ r ɛ t i ə n /
- Mean orbit radius
- 14,345,000 km
- Eccentricity
- 0.6608 (mean)
- Orbital period sidereal
- 1687.01 d
- Inclination
- 57° (to the ecliptic )
- Satellite of
- Uranus
- Mean radius
- 10 km (estimate)
- Surface area
- ~1,300 km (estimate)
- Volume
- ~4,200 km (estimate)
- Mass
- ~5.5 × 10 kg (estimate)
- Mean density
- ~1.3 g/cm (assumed)
- Surface gravity
- ~0.0023 m/s (estimate)
- Escape velocity
- ~0.0085 km/s (estimate)
- Synodic rotation period
- ?
via Wikipedia infobox
Article
Margaret is the only known prograde irregular satellite of the moons of Uranus. It was discovered by Scott S. Sheppard, et al. in 2003 and given the provisional 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. The name was also chosen to match the name of Sheppard's mother.