Difference between revisions of "Janus"

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Janus is a natural satellite of [[Saturn]].
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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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!bgcolor="lightsteelblue" colspan="2" align="center" |Janus
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|-
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|colspan="2" align="center"|[[Image:Janus-SaturnMoonszip-Orbiter2016D3D9.jpg|240px]]
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|-
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|colspan="2" align="center"|'''Janus from ''Saturn Moons.zip'' in Orbiter 2016 with D3D9'''
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|-
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!bgcolor="lightsteelblue" colspan="2"|Designation
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|-
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|Name||align="right"|Janus
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|-
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|width="30%"|Reference body||align="right" width="30%"|Saturn
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|-
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!bgcolor="lightsteelblue" colspan="2"|Planetary mean orbits
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|-
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|width="30%"|Epoch||align="right" width="50%"|2014.39014373717
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|-
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|width="30%"|Semimajor axis (a)||align="right" width="50%"|151460988.095 m
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|-
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|width="30%"|Eccentricity (e)||align="right" width="30%"|0.0000000144511577606
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|-
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|width="30%"|Inclination (i)||align="right" width="30%"|0.000007105811891727° <br> (0.000000124019813538 radian)
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|-
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|width="30%"|Longitude of the ascending node (LAN, ☊)||align="right" width="30%"|208.626701831817° <br> (3.6412228545417 radian)
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|-
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|width="30%"|Longitude of periapsis (ϖ)||align="right" width="30%"|104.242486953736° <br> (1.81937461780992 radian)
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|-
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|width="30%"|Mean longitude (L)||align="right" width="30%"|108.701283931732° <br> (1.89719530575393 radian)
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|-
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!bgcolor="lightsteelblue" colspan="2"|Selected physical parameters
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|-
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|width="30%"|Mean radius||align="right" width="30%"|3000 m
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|-
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|width="30%"|Mass||align="right" width="30%"|7×10<sup>15</sup> kg
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|-
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|width="30%"|Note||align="right" width="30%"|*Elements given are from Janus.cfg (Saturn Moons.zip)
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|}
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'''Janus (Saturn X, S/1966 S 2)''' is one of the inner [natural satellites|moons]] of [[Saturn]]. It was discovered by [[w:Audouni Dollfus|Audouoin Dollfus]] on 15 December 1966. However, Jean Teereau had imaged Janus on 29 October the same year, but, did not recognize it as a new body. Janus was named for [[w:Janus|Janus]] of Roman mythology.
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Janus is co-orbital with [[Epimetheus]] in that when Janus' orbit is slightly smaller than that of Epimetheus, over time, Janus will catch up with Epimetheus, as it makes its approach, it is slightly drawn toward Epimetheus adding orbiter energy placing it in a slightly larger orbit, then it will slow down and recede from Epimetheus, and over time Epimetheus will catch up to it. So, they 'swap orbits' so to speak. This occurs about every four years.
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== Janus in Orbiter ==
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Janus was first introduced to Orbiter with the release of ''isaturn.zip'' in October 2002.
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{|class="wikitable sortable” style="text-align: center"
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|-
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|colspan="8"|<center>'''Orbiter versions and add-ons which include Janus'''</center>
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|-
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!Add-on!!Source!!Version!!Author!!Type!!Release Date!!Compatibility!!Wiki article
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|-
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|[https://www.orbiter-forum.com/resources/saturn-moons.3813/ Saturn Moons]||O-F Resources||2014-09-21||T1234||Scenery||21 September 2014||||
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|-
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|[https://library.avsim.net/esearch.php?DLID=&Name=&FileName=outer_planets-060929-base.zip&Author=&CatID=root The Outer Planets 060929 Base]||AVSIM||||Rolf Keibel<br>Carl Romanik<br>Tony Dunn||Scenery||30 September 2006||Orbiter 2006-P1||
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|-
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|[https://library.avsim.net/esearch.php?DLID=&Name=&FileName=outerplanets-050329_update.zip&Author=&CatID=root The Outer Planets 050329 Update]||AVSIM||050329||Rolf Keibel<br>Tony Dunn<br>Carl Romanik||Scenery||30 March 2005||||
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|-
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|[https://www.orbiter-forum.com/resources/the-outer-planets-050223-update.2483/ The Outer Planets 050223 Update]||O-F Resources||2005-02-23||VF2_Rolf||Scenery||23 February 2005||||
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|-
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|[https://library.avsim.net/esearch.php?DLID=&Name=&FileName=outerplanets-050125.zip&Author=&CatID=root The Outer Planets 050125]||AVSIM||050125||Rolf Keibel<br>Tony Dunn||Scenery||26 January 2005||Orbiter 2005-P1||
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|-
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|[https://library.avsim.net/esearch.php?DLID=&Name=&FileName=isaturn.zip&Author=&CatID=root Inner Moons of Saturn]||AVSIM||||Rolf Keibel||Scenery||15 October 2002||||
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|}
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== See also ==
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[[w:Janus (moon)|Janus]] at [[w:Wikipedia|Wikipedia]]
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== Gallery ==
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<gallery widths="100" heights="100">
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Janus021015.jpg|<center>Janus from isaturn.zip in Orbiter 2002</center>
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Janus-outerplanets050125zip-Orbiter2005P1.jpg|<center>Janus from ''outerplanets-050125.zip'' in Orbiter 2005P1</center>
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Janus-outerplanets060929basezip-Orbiter2006P1.jpg|<center>Janus from ''outer_planets-060929-base.zip'' in Orbiter 2006P1</center>
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Janus-SaturnMoonszip-Orbiter2016D3D9.jpg|<center>Janus from ''Saturn Moons.zip'' in Orbiter 2016 with D3D9</center>
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PIA12714 Janus crop.jpg|<center>Janus as seen by the [[w:Cassini-Huygens|Cassini]] spacecraft on 7 April 2010,<br>from Wikimedia Commons</center>
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Epimetheus-Janus Orbit.png|<center>Illustration of the 'horseshoe' orbits of Epimetheus and Janus showing their co-orbiting. Saturn's size and orbital radius are close to scale, but, the inner to outer distance is exaggerrated about 500× and the sizes of the moons are exaggerated about 50 times.<br>From Wikimedia Commons
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</gallery>
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{{SaturnSat}}
 
{{SaturnSat}}
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{{SolarSystem}}
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[[Category: Articles]]
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[[Category:Celestial bodies]]
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[[Category:Solar System]]
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[[Category:Natural satellites]]
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[[Category:Satellites of Saturn]]
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{{Nsat-Stub}}
 
{{Nsat-Stub}}

Latest revision as of 03:46, 7 November 2024

Janus
Janus-SaturnMoonszip-Orbiter2016D3D9.jpg
Janus from Saturn Moons.zip in Orbiter 2016 with D3D9
Designation
Name Janus
Reference body Saturn
Planetary mean orbits
Epoch 2014.39014373717
Semimajor axis (a) 151460988.095 m
Eccentricity (e) 0.0000000144511577606
Inclination (i) 0.000007105811891727°
(0.000000124019813538 radian)
Longitude of the ascending node (LAN, ☊) 208.626701831817°
(3.6412228545417 radian)
Longitude of periapsis (ϖ) 104.242486953736°
(1.81937461780992 radian)
Mean longitude (L) 108.701283931732°
(1.89719530575393 radian)
Selected physical parameters
Mean radius 3000 m
Mass 7×1015 kg
Note *Elements given are from Janus.cfg (Saturn Moons.zip)

Janus (Saturn X, S/1966 S 2) is one of the inner [natural satellites|moons]] of Saturn. It was discovered by Audouoin Dollfus on 15 December 1966. However, Jean Teereau had imaged Janus on 29 October the same year, but, did not recognize it as a new body. Janus was named for Janus of Roman mythology.

Janus is co-orbital with Epimetheus in that when Janus' orbit is slightly smaller than that of Epimetheus, over time, Janus will catch up with Epimetheus, as it makes its approach, it is slightly drawn toward Epimetheus adding orbiter energy placing it in a slightly larger orbit, then it will slow down and recede from Epimetheus, and over time Epimetheus will catch up to it. So, they 'swap orbits' so to speak. This occurs about every four years.

Janus in Orbiter[edit]

Janus was first introduced to Orbiter with the release of isaturn.zip in October 2002.

Orbiter versions and add-ons which include Janus
Add-on Source Version Author Type Release Date Compatibility Wiki article
Saturn Moons O-F Resources 2014-09-21 T1234 Scenery 21 September 2014
The Outer Planets 060929 Base AVSIM Rolf Keibel
Carl Romanik
Tony Dunn		 Scenery 30 September 2006 Orbiter 2006-P1
The Outer Planets 050329 Update AVSIM 050329 Rolf Keibel
Tony Dunn
Carl Romanik		 Scenery 30 March 2005
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
Inner Moons of Saturn AVSIM Rolf Keibel Scenery 15 October 2002

See also[edit]

Janus at Wikipedia

Gallery[edit]

  • Janus from isaturn.zip in Orbiter 2002
  • Janus from outerplanets-050125.zip in Orbiter 2005P1
  • Janus from outer_planets-060929-base.zip in Orbiter 2006P1
  • Janus from Saturn Moons.zip in Orbiter 2016 with D3D9
  • Janus as seen by the Cassini spacecraft on 7 April 2010,
    from Wikimedia Commons
  • Illustration of the 'horseshoe' orbits of Epimetheus and Janus showing their co-orbiting. Saturn's size and orbital radius are close to scale, but, the inner to outer distance is exaggerrated about 500× and the sizes of the moons are exaggerated about 50 times.
    From Wikimedia Commons


Saturn's natural satellites

edit

Named Satellites::

Aegaeon | Aegir | Albiorix | Alvaldi | Angrboda | Anthe | Atlas | Bebhionn | Beli | Bergelmir | Bestla | Calypso | Daphnis | Dione | Eggther | Enceladus | Epimetheus | Erriapus | Farbauti | Fenrir | Fornjot | Geirrod | Gerd | Greip | Gridr | Gunnlod | Hati | Helene | Hyperion | Hyrrokkin | Iapetus | Ijiraq | Janus | Jarnsaxa | Kari | Kiviuq | Loge | Methone | Mimas | Mundilfari | Narvi | Paaliaq | Pallene | Pan | Pandora | Phoebe | Polydeuces | Prometheus | Rhea | Siarnaq | Skathi | Skoll | Skrymir | Surtur | Suttungr | Tarqeq | Tarvos | Telesto | Tethys | Thiazzi | Thrymr | Titan | Ymir

Numbered Satellites:

S/2004 S 7 | S/2004 S 12 | S/2004 S 13 | S/2004 S 17 | S/2004 S 21 | S/2004 S 24 | S/2004 S 26 | S/2004 S 28 | S/2004 S 29 | S/2004 S 31 | S/2004 S 34 | S/2004 S 36 | S/2004 S 37 | S/2004 S 39 | S/2004 S 40 | S/2004 S 41 | S/2004 S 42 | S/2004 S 43 | S/2004 S 44 | S/2004 S 45 | S/2004 S 46 | S/2004 S 47 | S/2004 S 48 | S/2004 S 49 | S/2004 S 50 | S/2004 S 51 | S/2004 S 52 | S/2004 S 53 | S/2005 S 4 | S/2005 S 5 | S/2006 S 1 | S/2006 S 3 | S/2006 S 9 | S/2006 S 10 | S/2006 S 11 | S/2006 S 12 | S/2006 S 13 | S/2006 S 14 | S/2006 S 15 | S/2006 S 16 | S/2006 S 17 | S/2006 S 18 | S/2006 S 19 | S/2006 S 20 | S/2007 S 2 | S/2007 S 3 | S/2007 S 5 | S/2007 S 6 | S/2007 S 8 | S/2007 S 9 | S/2009 S 1 | S/2019 S 1 | S/2019 S 2 | S/2019 S 3 | S/2019 S 4 | S/2019 S 5 | S/2019 S 6 | S/2019 S 7 | S/2019 S 8 | S/2019 S 9 | S/2019 S 10 | S/2019 S 11 | S/2019 S 12 | S/2019 S 13 | S/2019 S 14 | S/2019 S 15 | S/2019 S 16 | S/2019 S 17 | S/2019 S 18 | S/2019 S 19 | S/2019 S 20 | S/2019 S 21 | S/2020 S 1 | S/2020 S 2 | S/2020 S 3 | S/2020 S 4 | S/2020 S 5 | S/2020 S 6 | S/2020 S 7 | S/2020 S 8 | S/2020 S 9 | S/2020 S 10

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