Oberon

Oberon
Oberon in Orbiter 2016 with D3D9 client, with Uranus in the background
Designation
Name	Oberon
Reference body	Uranus
Planetary mean orbits
Epoch	2005.41409993155
Semimajor axis (a)	583560909.561177 m
Eccentricity (e)	0.00110658045344143
Inclination (i)	97.87882122° (1.70830769827032 radian)
Longitude of the ascending node (LAN, ☊)	167.7422432° (2.92765443828649 radian)
Longitude of periapsis (ϖ)	288.925047° (5.04269336191529 radian)
Mean longitude (L)	472.6703921° (8.24965461905517 radian)
Selected physical parameters
Mean radius	761400 m
Mass	3.03×1021 kg
Note	*Elements given are from Oberon.cfg (Orbiter 2005P1)

Oberon is the second largest and second most massive natural satellite of Uranus. It was discovered on 11 January 1787 by William Herschel, and was named after a character from William Shakespeare's A Midsummer Night's Dream. It is one of the five satellites of Uranus discovered prior to the Voyager 2 encounter of January 1986.

Oberon has a radius of 761.4km. Its surface gravity is 0.349m/s^2, 0.036 that of Earth. A surface orbit has a speed of 515m/s, and the escape velocity is 729m/s. A surface orbit has a period of 9283s (about 2 hours 35 minutes).

Oberon's orbit about Uranus is almost perfectly circular and equatorial, and has a radius of 583400km. Its orbital period is 13.463 days. This is the outermost of the five major satellites.

Like all the satellites of Uranus, Oberon's axis is tilted 98° relative to the ecliptic plane. It is locked in synchronous rotation, like the Earth's moon. When Voyager flew past, Uranus and all its satellites were near their southern summer solstice, and in this case it means that only the southern hemispheres were visible. As a consequence, only the southern hemisphere of Oberon has been mapped in any detail.

Oberon has a mean density of about 1.6 times that of water. From this, we can conclude that the satellite is mostly water ice, with a little bit of rock mixed in.

Oberon in Orbiter

Oberon was first introduced to Orbiter in October 2002 with the release of uranus-neptune-moons.zip add-on, then included into the release of Orbiter 2002-P1. There have been a number of updates since then, the latest with Uranian Moons for Orbiter 2016 in May 2024.

Orbiter versions and add-ons which include Oberon
Add-on	Source	Version	Author	Type	Release Date	Compatibility	Wiki article
The Outer Planets 050223 Update	O-F Resources	2005-02-23	VF2_Rolf	Scenery	23 February 2005
The Outer Planets 050125	AVSIM	050125	Rolf Keibel Tony Dunn	Scenery	26 January 2005	Orbiter 2005-P1
2005 (with P1 patch files)	O-F Resources	050216	martins	Orbiter Download	16 February 2005	Orbiter 2005
Orbiter 2003-P2	O-F Resources	031217	martins	Orbiter Download	17 December 2003	Orbiter 2003-P2
Orbiter 2003-P1	O-F Resources	031105	martins	Orbiter Download	5 November 2003
Uranus / Neptune Moons Addon	AVSIM		Robert Stettner (Foxtrot)	Scenery	12 October 2002

• 

  Oberon from uranus-neptune-moons.zip in Orbiter 2002
• 

  Oberon in Orbiter 2002P3
• 

  Oberon in Orbiter 2003P2
• 

  Oberon in Orbiter 2005P1
• 

  Oberon from outerplanets-050125.zip in Orbiter 2005P1
• 

  Voyager 2 image of Oberon
  From Wikimedia Commons.

: