File:Stephano_-_Uranus_moon.jpg · Wikimedia Commons · See Wikimedia Commons
Key facts
- Discovered by
- John J. Kavelaars Brett J. Gladman Matthew J. Holman Jean-Marc Petit Hans Scholl
- Discovery date
- July 18, 1999
- Designation
- Uranus XX
- Pronunciation
- / ˈ s t ɛ f ən oʊ / STEF -ən-oh
- Adjectives
- Stephanonian / ˌ s t ɛ f ə ˈ n oʊ n i ə n / STEF -ə- NOH -nee-ən
- Mean orbit radius
- 7 951 400 km
- Orbital period sidereal
- 677 d
- Inclination
- 143.6° (to the ecliptic )
- Satellite of
- Uranus
- Group
- Caliban group
- Mean radius
- 16 km (estimate)
- Surface area
- ~3200 km (estimate)
- Volume
- ~17 000 km (estimate)
- Mass
- ~ 2.2 × 10 kg (estimate)
- Mean density
- ~1.3 g/cm (assumed)
- Surface gravity
- ~0.006 m/s (estimate)
- Escape velocity
- ~0.014 km/s (estimate)
- Synodic rotation period
- ?
via Wikipedia infobox
Wikidata facts
- Instance of
- moon of Uranus
- Parent body
- Uranus
- Radius
- 16
- Mass
- 25
- Orbital period
- 677.37
- Image
- Stephano - Uranus moon.jpg
Show 10 more facts
- discoverer or inventor
- Matthew J. Holman
- provisional designation
- S/1999 U 2
- time of discovery or invention
- 1999-07-18
- orbital eccentricity
- 0.2292
- semi-major axis of an orbit
- 8004000
- orbital inclination
- 141.81
- volume as quantity
- 20000
- albedo
- 0.040
- temperature
- 64
- Commons category
- Stephano (moon)
via Wikidata · CC0
Article · Deutsch
Stephano (auch Uranus XX) ist der siebtäußerste der 27 bekannten und der drittinnerste der äußeren retrograden irregulären Monde des Planeten Uranus. Er ist einer der kleineren natürlichen Satelliten des Planeten.
Abstract from DBpedia / Wikipedia · CC BY-SA