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{| cellpadding="2" cellspacing="0" style="margin:25px 0 0 10px; border:3px solid lightsteelblue;width:250px; font-size:90%; font-family:'Arial','Helvetica'; float: right; clear: right;"Template in Orbiter"
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==Versions==
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!bgcolor="lightsteelblue" colspan="2" align="center" |Halley
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Not long after Martin made Orbiter open source, he uploaded all the versions he still had to the [https://www.orbiter-forum.com/resources/ Resources] section of [https://www.orbiter-forum.com/ Orbiter-forum].  
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|colspan="2" align="center"|[[Image:HalleyScrnshot.jpg|240px]]
 
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|colspan="2" align="center"|'''Halley in Orbiter 2016 with D3D9 client'''
 
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!bgcolor="lightsteelblue" colspan="2"|Designation
 
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|Name||align="right"|Halley
 
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|width="30%"|Reference body||align="right" width="30%"|[[Sun]]
 
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!bgcolor="lightsteelblue" colspan="2"|Planetary mean orbits
 
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|width="30%"|Epoch||align="right" width="50%"|2006
 
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|width="30%"|Semimajor axis (a)||align="right" width="50%"|2669601650361.16 m
 
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|width="30%"|Eccentricity (e)||align="right" width="30%"|0.967449497943645
 
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|width="30%"|Inclination (i)||align="right" width="30%"|162.2922643° <br> (2.83253436266766 radian)
 
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|width="30%"|Longitude of the ascending node (LAN, ☊)||align="right" width="30%"|58.2997774° <br> (1.01752306877974 radian)
 
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|width="30%"|Longitude of periapsis (ϖ)||align="right" width="30%"|169.4792496° <br> (2.95797092009003 radian)
 
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|width="30%"|Mean longitude (L)||align="right" width="30%"|264.6340534° <br> (4.61873554527679 radian)
 
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!bgcolor="lightsteelblue" colspan="2"|Selected physical parameters
 
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|width="30%"|Mean radius||align="right" width="30%"|5500 km
 
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|width="30%"|Mass||align="right" width="30%"|1×10<sup>14</sup> kg
 
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!bgcolor="lightsteelblue" colspan="2"|Rotation elements
 
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|width="30%"|SidRotPeriod||align="right" width="30%"|187200 seconds (52 hours)
 
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|width="30%"|SidRotOffset||align="right" width="30%"|0
 
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|width="30%"|Obliqutiy||align="right" width="30%"|0
 
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|width="30%"|LAN||align="right" width="30%"|0
 
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|width="30%"|Note||align="right" width="30%"|*Elements given are from Halley.cfg (Halley.zip)
 
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|}
 
  
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'''Halley's Comet''', also referred to as 1P/Halley, is a short period comet appearing in the skies every 72 to 80 years, last seen in 1986 and the next will be in 2061. Named after [[w:Edmond Halley|Edmond Halley]] who was the first to recognize it as a recurring comet although it has been seen since ancient times.
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===Orbiter 2001===
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Author's Comments:<br>
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The earliest copy of Orbiter I have on record, from 2001.
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2001.5437/ Orbiter 2001]|
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|2=Martin Schweiger (martins)
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|3=2001 (orbiter010503)
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}}
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===Orbiter 2002===
  
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== Halley in Orbiter ==
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Author's Comments:<br>
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Halley was introduced to [[Orbiter]] as an add-on in 2004. Since Orbiter was not designed to show a comet's tails, the add-on depicts it as a rugby ball shaped body much like an asteroid.
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Orbiter's 2002 release. Both files are needed for a working copy.
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Halley orbits the [[Sun]] in a very elliptical orbit, moving retrograde to the Sun, unlike the planets which move prograde, or counter-clockwise looking from the north of the [[Solar System]]. [[periapsis|Periapsis]] takes Halley to between the orbits of [[Mercury]] and [[Venus]], and at [[apoapsis]] it is beyond that of [[Neptune]].
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2002.5436/ Orbiter 2002]|
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|2=Martin Schweiger (martins)
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|3=2002 (orbiter020419)
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}}
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===Orbiter 2002-P1, with subsequent patches===
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Author's Comments:<br>
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Orbiter's second release in 2002, which then included three subsequent revisions as patches to the base 021202 install.
  
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Note that when landed on Halley near the apoapsis, Halley provides only about 1% of the total gravity, the other 99% by the Sun, but, near apoapsis, Halley provides 98% of the gravity, the Sun, only about 2%. It may be difficult to stay landed near Halley's periapsis. The sphere of influence near apoapsis is about 37 km from the center, and near periapsis, the SOI is right about the surface.
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These are cumulative, which means if you want 030303 you need to unpack the 021202 base, then the 021206 patch, the 021217 patch, and then finally the 030303 patch, to get a working install.
  
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It can be difficult to visit Halley as when it is near apoapsis, Halley is traveling at about 900 m/s, but it's 35 AU from the Sun. Near Periapsis, it's about 0.5 AU from the Sun, but it's traveling almost 55000 m/s.
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You'll need both _base and _tex for a working 021202 base install.
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2001.5437/ Orbiter 2002P1, 6 files]|
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|2=Martin Schweiger (martins)
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|3=2002P1 (orbiter021202, orbiter021206, orbiter021217, orbiter030303_patch.zip)
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}}
  
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It should also be noted that when landing on Halley that the visual surfaces are well below the hard radius (5500 meters), which is not visible, so instrument landing with HUD in surface is recommended.
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===Orbiter 2003-P1===
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Author's Comments:<br>
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The first revision of Orbiter from 2003. Not originally called 2003-P1 (as far as I know) but adjusted to fit the more recent format.
  
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{| class="wikitable" style="text-align: center"
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You need _base and _tex for a working Orbiter install. _sdk is optional, for developing addons against.
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|-
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{{Addon|
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|colspan="8"|<center>'''Add-ons which include Halley'''</center>
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|1=[https://www.orbiter-forum.com/resources/orbiter-2003-p1.5434/ Orbiter 2003P1, 1 file]|
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|-
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|2=Martin Schweiger (martins)
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!Add-on!!Source!!Version!!Author!!Type!!Release Date!!Compatibility!!Wiki article
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|3=2003P1 (orbiter031105)
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|-
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}}
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|[https://www.orbiter-forum.com/resources/halleys-comet-nucleus.1491/ Halley's Comet Nucleus]||O-F Resources||2004-11-22||Nighthawke||Scenery||22 November 2004||||
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===Orbiter 2003-P2===
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|}
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Author's Comments:<br>
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The second revision of Orbiter from 2003. While this wasn't called 2003-P1 at the time as far as I can tell, that's what Orbiter later started using, so I've kept that format here as we go backwards in time.
  
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== See also ==
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You need _base and _tex for a working Orbiter install. The _sdk is optional.
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[[w:Halley's Comet|Halley's Comet]] at [[w:Wikipedia|Wikipedia]]
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2003-p2.5433/ Orbiter 2003P2, 3 files]|
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|2=Martin Schweiger (martins)
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|3=2003P2 (orbiter031217)
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}}
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===Orbiter 2005===
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Author's Comments:<br>
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Orbiter 2005 - both the initial release and the later patch for a revision.
  
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== Gallery ==
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The 050216 patch needs to be applied over the base 050116 install, it won't make a standalone Orbiter install by itself.
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<gallery widths="100" heights="100">
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{{Addon|
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Halley-Halleyzip-Orbiter2003P2.jpg|<center>Comet Halley from ''Halley.zip'' in Orbiter 2003P2</center>
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|1=[https://www.orbiter-forum.com/resources/2005-with-p1-patch-files.5432/ Orbiter 2005, with P1 patch files(5 files)]|
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Lspn comet halley.jpg|<center>Comet 1P/Halley as it appeared from Earth on 8 March 1986</center>
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|2=Martin Schweiger (martins)
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Comet Halley close up-cropped.jpg|<center>The nucleus of Halley as seen by the [[w:Giotto (spacecraft)|Giotto]] spacecraft in 1986</center>
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|3=2005P1 (orbiter050116, orbiter050216)
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Halley's Comet animation.gif|<center>Animation of Halley's orbit<br>The outermost planet is Neptune</center>
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}}
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Animation of 1P／Halley orbit - 1986 apparition.gif|<center>Orbiter path of Halley during the 1986 apparition as compared to Earth</center>
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===Orbiter 2006===
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</gallery>
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Comments:<br>
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Author's Orbiter 2006 base package.
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2006.5431/ Orbiter 2006(1 file)]|
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|2=Martin Schweiger (martins)
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|3=2006 (orbiter060504)
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}}
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===Orbiter 2006-P1===
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Author's Comments:<br>
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Orbiter 2016-P1, base and separate SDK package.
  
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{{SolarSystem}}
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Only the base is needed for the core Orbiter application.
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2006-p1.5430/ Orbiter 2006-P1(2 files)]|
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|2=Martin Schweiger (martins)
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|3=2006P1 (orbiter060929)
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}}
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===2006 & 2006-P1 Hi-Res Textures===
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Author's Comments:<br>
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High-Res texture packs for 2006
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/2006-2006-p1-hi-res-textures.5438/ 2006 & 2006-P1 Hi-Res Textures(18 files)]|
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|2=Martin Schweiger (martins)
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|3=Hi-Res Textures (PlanetHires060504.zip, Mars060504)l10.zip, Mars060922_L9.zip, Mars060504_L8.zip, Mars060504_L10_Olympus.zip, Jupiter060504_L7.zip, Io060504_L7.zip, Iapetus060504_L7.zip, Earth060504_L10.zip, Enceladus060504_L8.zip, Enceladus060504_L7.zip, Dragonfly060504_htex.zip, Dione060504_L7.zip, Deimos060504_Hi.zip, Titan060504_L7.zip, Tethys060504_L7.zip, Rhea060504_L7.zip, Phobos060504_Hi.zip)
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}}
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===Orbiter 2010===
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Author's Comments:<br>
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Orbiter 2010, in ZIP and MSI format - you only need one of these files.
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2010.5429/ Orbiter 2010(2 files)]|
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|2=Martin Schweiger (martins)
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|3=2010 (orbiter100606.msi, orbiter100606.zip)
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}}
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===Orbiter 2010-P1===
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Author's Comments:<br>
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Orbiter 2010-P1, both MSI and ZIP versions. You only need one of these files!
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2010-p1.5428/ Orbiter 2010-P1(1 files)]|
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|2=Martin Schweiger (martins)
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|3=2010P1 (orbiter100830.zip)
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}}
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===Orbiter 2016===
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Author's Comments:<br>
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The official release of Orbiter 2016 - both ZIP and MSI versions, along with the optional high-resolution packs.
  
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[[Category:Articles]]
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You can find more information about these files from [http://orbit.medphys.ucl.ac.uk/download.html http://orbit.medphys.ucl.ac.uk/download.html] - the content here is just to protect against bit-rot in those links.
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[[Category:Celestial bodies]]
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{{Addon|
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[[Category:Solar System]]
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|1=[https://www.orbiter-forum.com/resources/orbiter-2016-torrent-files.5427/ Orbiter 2016-torrent files(9 files)]|
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[[Category:Comets]]
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|2=Martin Schweiger (martins)
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|3=2016 (Orbiter2016.zip.torrent, Orbiter2016.exe.torrent, Orbiter2016Corezip.torrent, Orbiter2016CoreMSI.torrent, Orbiter2016HiResMoon.torrent, Orbiter2016HiResBodies.torrent, Orbiter2016HiResMars.torrent, Orbiter2016HiResEarth.torrent, Orbiter2016HiResAll.torrent)
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}}
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Author's Comments:<br>
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The official release of Orbiter 2016 - both ZIP and MSI versions, along with the optional high-resolution packs.
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You can find more information about these files from [http://orbit.medphys.ucl.ac.uk/download.html http://orbit.medphys.ucl.ac.uk/download.html] - the content here is just to protect against bit-rot in those links.
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2016-core-msi-exe-edition.5426/ Orbiter 2016-MSI/EXE edition(1 file)]|
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|2=Martin Schweiger (martins)
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|3=2016 (Orbiter2016.exe)
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}}
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Author's Comments:<br>
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The official release of Orbiter 2016 - both ZIP and MSI versions, along with the optional high-resolution packs.
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You can find more information about these files from [http://orbit.medphys.ucl.ac.uk/download.html http://orbit.medphys.ucl.ac.uk/download.html] - the content here is just to protect against bit-rot in those links.
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{{Addon|
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|1=[https://www.orbiter-forum.com/resources/orbiter-2016-core-zip-edition.5425/ Orbiter 2016-ZIP edition(1 file)]|
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|2=Martin Schweiger (martins)
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|3=2016 (Orbiter2016.zip)
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}}

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