Margaret

Also known as Uranus XXIII, S/2003 U 3

moon of Uranus

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

Wikidata facts

Radius: 10
Mass: 6.3
Orbital period: 1687.01
Image: Margaret discovery.gif

Show 8 more facts

time of discovery or invention: 2003-08-29
provisional designation: S/2003 U 3
semi-major axis of an orbit: 14345000
volume as quantity: 4200
orbital eccentricity: 0.6608
orbital inclination: 57
albedo: 0.040
Commons category: Margaret (moon)

Sources (3)

via Wikidata · CC0

~2 min read

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.