Editing 3753 Cruithne

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{{Addon
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|1=[https://www.orbiter-forum.com/resources/cruinthe-asteroid-3753.4045/ Cruinthe Asteroid 3753]
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|2=[[List of add-ons by Burnrate|Burnrate]]
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|3=2009-08-17
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|4=Orbiter 2006, Orbiter 2010, Orbiter 2016
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}}
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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"
 
{| 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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!bgcolor="lightsteelblue" colspan="2" align="center" |3753 Cruithne
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!bgcolor="lightsteelblue" colspan="2" align="center" |Cruinthe
 
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|colspan="2" align="center"|[[Image:3753Cruithne-Cruinthezip-Orbiter2006P1.jpg|240px]]
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|colspan="2" align="center"|[[Image:Cruinthe.png|240px]]
 
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|colspan="2" align="center"|'''3753Cruithne from ''Cruinthe.zip'' in Orbiter2006P1'''
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|colspan="2" align="center"|'''Cruinthe in Orbiter'''
 
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!bgcolor="lightsteelblue" colspan="2"|Designation
 
!bgcolor="lightsteelblue" colspan="2"|Designation
 
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|Name||align="right"|3753 Cruithne
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|Name||align="right"|Cruinthe
 
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|width="30%"|Reference body||align="right" width="30%"|Sun
 
|width="30%"|Reference body||align="right" width="30%"|Sun
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|width="30%"|Escape velocity||align="right" width="30%"| 1.81 m/s
 
|width="30%"|Escape velocity||align="right" width="30%"| 1.81 m/s
 
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|width="30%"|Gravity at surface||aligh="right" width="30%"|Cruithne 15%<br>Sun 85%
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|width="30%"|Gravity at surface||aligh="right" width="30%"|Cruinthe 15%<br>Sun 85%
 
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|width="30%"|Note||align="right" width="30%"|*Elements given are from Cruinthe.cfg file.
 
|width="30%"|Note||align="right" width="30%"|*Elements given are from Cruinthe.cfg file.
 
|}
 
|}
  
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'''3753 Cruithne''' is an asteroid, belonging to the [[w:Aten asteroid]] group, in an elliptical solar orbit with almost a 1:1 resonance with the Earth, and was discovered on 10 October 1986 by [[w:Duncan Waldron]]. It's orbit takes Cruithne from the orbit of [[Mercury]] to beyond that of [[Mars]]. In Orbiter, Cruithne was added as an [[Add-on]] by [[List of add-ons by Burnrate|Burnrate]] in 2009.
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'''3753 Cruinthe''', known in [[Orbiter]] simply as Cruinthe is an asteroid, belonging to the [[w:Aten asteroid]] group, in an elliptical solar orbit with almost a 1:1 resonance with the Earth, and was discovered on 10 October 1986 by [[w:Duncan Waldron]]. It's orbit takes Cruinthe from the orbit of [[Mercury]] to beyond that of [[Mars]]. In Orbiter, Cruinthe was added as an [[Add-on]] by [[List of add-ons by Burnrate|Burnrate]] in 2009.
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== Note about the name ==
 
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The add-on file is ''Cruinthe.zip'', spelled incorrectly. this should be corrected thusly:
 
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*Rename the file ''Cruinthe.cfg'' as ''3753 Cruithne.cfg''
 
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*Open the file ''Cruithne.cfg'', change the Name =  to ''3753 Cruithne'' and in the first line, change the spelling.
 
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*Rename the file ''Read Me (Cruinthe).txt'' in the Doc directory to ''Read Me (3753 Cruithne).txt''
 
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*Open that file and change both references in there.
 
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*Rename the files ''Cruinthe.tex'' and ''CruintheM.bmp'' as ''3753 Cruithne.tex'' and ''3753 Cruithne''
 
  
 
== Physical Characteristics in Orbiter ==
 
== Physical Characteristics in Orbiter ==
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3753 Cruithne has a diameter of about 3300 meters, and a mass of 4.05×10<sup>13</sup> kg. The surface gravity is only about .001 m/s<sup>2</sup> and escape velocity is about 1.8 m/s, so, one may be able to jump beyond escape velocity. When landing a spacecraft, it may touch down slightly above or below the surface.
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Cruinthe has a diameter of about 3300 meters, and a mass of 4.05×10<sup>13</sup> kg. The surface gravity is only about .001 m/s<sup>2</sup> and escape velocity is about 1.8 m/s, so, one may be able to jump beyond escape velocity. When landing a spacecraft, it may touch down slightly above or below the surface.
  
 
== Orbital Characteristics in Orbiter ==
 
== Orbital Characteristics in Orbiter ==
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3753 Cruithne revolves around the [[Sun]] at a semi-major axis of just under 1 AU, almost the same distance as the Earth, with an eccentricity of a bit over 0.5, resulting in an orbit that ranges from just outside that of Mercury out past that of Mars.  
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Cruinthe revolves around the [[Sun]] at a distance of just under 1 AU, almost the same distance as the Earth, with an eccentricity of a bit over 0.5, resulting in an orbit that ranges from just outside that of Mercury out past that of Mars.  
  
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Orbiting the Sun in slightly under a year, the actual 3753 Cruithne is in lockstep with Earth, approaching within about 12 million km, then drifting to the opposite side of the Sun from the Earth, to about the same distance on the other side of the Earth. It's unknown whether this phenomena is modeled in Orbiter.
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Orbiting the Sun in slightly under a year, the actual Cruinthe is in lockstep with Earth, approaching within about 12 million km, then drifting to the opposite side of the Sun from the Earth, to about the same distance on the other side of the Earth. It's unknown whether this phenomena is modeled in Orbiter.
  
 
== Rotational characteristics ==
 
== Rotational characteristics ==
  
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3753 Cruithne rotates upon its axis in 98784 seconds, or 27<sup>h</sup> 26<sup>m</sup> 34<sup>s</sup>.
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Cruinthe rotates upon its axis in 98784 seconds, or 27<sup>h</sup> 26<sup>m</sup> 34<sup>s</sup>.
  
 
== Notice to pilots ==
 
== Notice to pilots ==
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Due to its size and mass, and the distance from the Sun, at the surface of Cruithne, the Sun's gravity is stronger than that of Cruithne, OrbitMFD shows Cruithne gravity at 0.15 and the Sun's at 0.85, so you may touchdown and stay on the surface, albeit barely, but as often you will begin to drift off the surface. Perhaps the best landing is on the night side as Cruithne and the Sun are pulling in the same direction.
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Due to its size and mass, and the distance from the Sun, the Sun's gravity is stronger than that of Cruinthe, OrbitMFD shows Cruinthe gravity at 0.15 and the Sun's at 0.85, so you may touchdown and stay on the surface, albeit barely, but as often you will begin to drift off the surface. Perhaps the best landing is on the night side as Cruinthe and the Sun are pulling in the same direction.
  
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The local lighting is interesting on Cruithne, the docking and landing light on the DeltaGlider will light up another ship parked nearby, but the terrain does not reflect local lights. Cruithne is opaque to the star field, the Sun and other bodies, but, if another ship is parked over the horizon, it is visible to your ship right through the terrain.
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The landing light of the DeltaGlider doesn't seem to work on Cruinthe.
  
 
== See also ==
 
== See also ==
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*[[w:3753 Cruithne|3753 Cruithne]] at Wikipedia.
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*[[w:3753 Cruinthe|Cruinthe]] at Wikipedia.
  
 
==Gallery==
 
==Gallery==
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<gallery widths="100" heights="100">
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<gallery widths="200" heights="200">
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3753Cruithne-Cruinthezip-Orbiter2006P1.jpg|<center>3753 Cruithne from ''Cruinthe.zip'' in Orbiter 2006P1</center>
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Orbits of Cruithne and Earth.gif|<center>Cruithne and Earth seem to follow each other because of a 1:1 orbital resonance. From Wikimedia commons.</center>
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Cruinthe.png|<center>3753 Cruithne in Orbiter 2016</center>
 
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Cruithne.jpg|<center>3753 Cruithne as imaged by the [[w:Powell Observatory|Powell Observatory]] in July 2001</center>
 
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Orbits of Cruithne and Earth.gif|<center>Cruithne and Earth seem to follow each other because of a 1:1 orbital resonance. From Wikimedia Commons.</center>
 
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Horseshoe orbit of Cruithne from the perspective of Earth.gif|<center>What Cruithne's orbit looks like from the perspective of Earth<br>from Wikimedia Commons</center>
 
 
</gallery>
 
</gallery>
  
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[[Category:Articles|Cruithne]]
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[[Category:Articles]]
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[[Category:Celestial bodies|Cruithne]]
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[[Category:Celestial bodies]]
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[[Category:Solar System|Cruithne]]
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[[Category:Solar System]]
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[[Category:Near-Earth objects|Cruithne]]
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[[Category:Near-Earth objects]]

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