**Stephano** is a Moon that orbits round the planet Uranus. It is also know by other designations, UXX, S/1999 U2. Its mass is estimated/calculated at being 25,477,363,362,652,300 kg. Its density has been calculated at being 1.5. Its volume is 17157.

Stephano was discovered on 18 July 1999 by Brett Gladman, Matthew Holman, John J. Kavelaars, Jean-Marc Petit, and Hans Scholl.

The orbital period, i.e. the period it takes to complete an orbit round Uranus is 676.5 days. The figure is also known as the sidereel period. The figure comes from N.A.S.A..

The Equatorial Radius of the object is 16km. The Equatorial Radius is based on the assumption of the Albedo value. The value is the radius in km of the said object at the Equator.

The albedo of the object is 0.04. The Albedo is the amount of radiation that is reflected back into space by the object.

The Escape Velocity of the object is 52 km/h. The Escape Velocity is the speed an object needs to be travelling in order to break free from the objects gravity. The larger an object is, the more velocity (speed) is needed to break free from the object.The Semi-Major Axis of the orbit is 8004, which is the furthest point from the centre to the edge of an elliptical point.

The equatorial circumference of Stephano is 100.5 km. The surface area of Stephano is 3,216.99. The surface gravity of the said item is 0.007. The Mean orbit velocity, that is the speed at which it orbits is 3054.90 km/h. The is the average distance in km of the object is from its parent 8007400.00.

The orbital inclination, the angle at which Stephano orbits in relation to the orbital plane is 143.82 degrees. The orbital eccentricity is 0.2248, it is the degree at which Stephano orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Type | Moon |

Designations | UXX, S/1999 U2 |

Mass (kg) | 25,477,363,362,652,300 |

Density (g/cm^3) | 1.5 |

Volume (km^3) | 17157 |

Orbital Direction | Retrograde, opposite to the parents direction |

Date of Discovery | 18 July 1999 |

Discoverer | Brett Gladman, Matthew Holman, John J. Kavelaars, Jean-Marc Petit, and Hans Scholl |

Orbital Period (days) | 676.5 |

Equatorial Radius (km) | 16 |

Albedo | 0.04 |

Escape Velocity (km/h) | 52 |

Semi-Major Axis (10^3 km) | 8004 |

Equatorial Circumference (km) | 100.5 |

Surface Area (km^2) | 3,216.99 |

Surface Gravity (m/s^2) | 0.007 |

Mean Orbit Velocity (km/h) | 3054.90 |

Average Orbit Distance (km) | 8007400.00 |

Orbital Inclination (degrees) | 143.82 |

Orbital Eccentricity | 0.2248 |

Source(s) | https://solarsystem.nasa.gov/moons/uranus-moons/stephano/in-depth/ https://nssdc.gsfc.nasa.gov/planetary/factsheet/uraniansatfact.html |

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