Difference between revisions of "1620 Geographos"

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(1998 KY26.)
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{| cellpadding="2" cellspacing="0" style="margin:25px 0 0 10px; border:3px solid lightsteelblue;width:250px; font-size:100%; font-family:'Arial','Helvetica'; float: right; clear: right;"Template in Orbiter"
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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" |1998 KY26
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!bgcolor="lightsteelblue" colspan="2" align="center" |1620 Geographos
 
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|-
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|colspan="2" align="center"|[[Image:1998 KY26.png|240px]]
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|colspan="2" align="center"|[[Image:Geographos-AsteroidPackv1zip-Orbiter2003P2.jpg|240px]]
 
|-
 
|-
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|colspan="2" align="center"|'''1998 KY26 in Orbiter'''
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|colspan="2" align="center"|'''1620 Geographos from ''AsteroidPack_v1.00.zip'' in Orbiter 2003P2'''
 
|-
 
|-
 
!bgcolor="lightsteelblue" colspan="2"|Designation
 
!bgcolor="lightsteelblue" colspan="2"|Designation
 
|-
 
|-
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|Name||align="right"|1998 KY26
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|Name||align="right"|1620 Geographos
 
|-
 
|-
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|Reference body||align="right"|Sun
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|width="30%"|Reference body||align="right" width="30%"|Sun
 
|-
 
|-
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|Number of satellites||align="right" width="30%"|0
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|width="30%"|Number of satellites||align="right" width="30%"|0
 
|-
 
|-
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!bgcolor="lightsteelblue" colspan="2"|Planetary mean orbit
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!bgcolor="lightsteelblue" colspan="2"|Planetary mean orbits
 
|-
 
|-
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|Epoch||align="right"|2006
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|width="30%"|Epoch||align="right" width="50%"|2006
 
|-
 
|-
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|Semimajor axis (a)||align="right" |1.23215341107285 AU <br> (1.84327526661×10<sup>11</sup> km)
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|width="30%"|Semimajor axis (a)||align="right" width="50%"| 186315638173.388 m<br>(1.24544311568598 AU)
 
|-
 
|-
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|Eccentricity (e)||align="right"|0.201480667262534
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|width="30%"|Eccentricity (e)||align="right" width="30%"| 0.335415102834536
 
|-
 
|-
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|Inclination (i)||align="right"|1.48112033563244°<br>(0.0258504264750296 radian)
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|width="30%"|Inclination (i)||align="right" width="30%"|0.232845464045468 radian<br>(13.3410623685705°)
 
|-
 
|-
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|Longitude of the ascending node (LAN, ☊)||align="right"|84.4505018758647° <br> (1.47393931271294 radian)
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|width="30%"|Longitude of the ascending node (LAN, ☊)||align="right" width="30%"|5.88689533166951 radian<br>337.29425693993°
 
|-
 
|-
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|Longitude of periapsis (ϖ)||align="right"|293.651279001369° <br> (5.12518167126637 radian)
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|width="30%"|Longitude of periapsis (ϖ)||align="right" width="30%"|10.7178284350264 radian<br>614.086334872317°
 
|-
 
|-
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|Mean longitude (L)||align="right"|461.292039150675° <br> (8.05106489641787 radian)
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|width="30%"|Mean longitude (L)||align="right" width="30%"|12.5060362286656 radian<br>716.543094340244°
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|-
 +
!bgcolor="lightsteelblue" colspan="2"|Rotational Elements
 +
|-
 +
|width="30%"|Sidereal Rotation Period||align="right" width="50%"|18802.8 seconds<br>(5.223 hours)
 +
|-
 +
|width="30%"|Sidereal Rotation Offset||align="right" width="50%"|0
 +
|-
 +
|width="30%"|Obliquity||align="right" width="30%"|0.1 radians<br>0°
 
|-
 
|-
 
!bgcolor="lightsteelblue" colspan="2"|Selected physical parameters
 
!bgcolor="lightsteelblue" colspan="2"|Selected physical parameters
 
|-
 
|-
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|width="30%"|Mean radius||align="right"|15 km
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|width="30%"|Mean radius||align="right" width="30%"| 3450 m
 
|-
 
|-
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|Mass||align="right"|1.35×10<sup>6</sup> kg
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|width="30%"|Mass||align="right" width="30%"|4×10<su>12</sup> kg
 
|-
 
|-
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!bgcolor="lightsteelblue" colspan="2"|Rotation elements
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|width="30%"|Equatorial gravity||align="right" width="30%"|0.000022 m/s<sup>2</sup>
 
|-
 
|-
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|Sidereal rotation period||align="right"|642.24 hours (10m42.24s)
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|width="30%"|Escape velocity||align="right" width="30%"| 0.0004 m/s
 
|-
 
|-
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|Sidereal rotation offset||align="right"|0
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|width="30%"|Gravity at surface||aligh="right" width="30%"|Geographos 1%<br>Sun 99%
 
|-
 
|-
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|Obliquity||align="right"|0
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|width="30%"|Note||align="right" width="30%"|*Elements given are from Geographos.cfg file.
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|-
 
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|Equatorial gravity||align="right"|1998 KY26 0%<br>Sun 100%
 
 
|}
 
|}
  
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{{Addon
 
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|1=[https://www.orbiter-forum.com/resources/asteroid-pack-1-00.2832/ Asteroid Pack 1.00]
 
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|2=[[List of add-ons by Nighthawke|Nighthawke]]
 
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|3=2004-11-21
 
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|4=All versions
 
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}}
 
  
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'''1998 KY26''' is a very small Near-Earth object disccovered by the Spacewatch survey at Kitt Peak on 2 June 1998.
+
'''1620 Geographos''' is a Near-Earth object discovered in 1951 by [[w:Albert George Wilson|Albert George Wilson]] and [[w:Rudolph Minkowski]] at [[w:Palomar Observatory|Palomar]] and is named in honor of the [[w:National Geographic Society]].
 +
 
 +
Geographos was to be visited by the [[w:Clementine (spacecraft)|Clementine mission]], but it failed to reach the body.
 +
 
 +
== Geographos in Orbiter ==
 +
1620 Geographos was modeled in Orbiter as a somewhat potato shaped object about 5 km on the longest dimension. Because the visual surface of Geographos is well below the hard radius of the body, landing anywhere on the body's radius you end up well above the visual surface. Because even at the surface, geographos only provides 1% of the local gravity, the [[Sun]] providing the other 99%, a ship cannot orbit Geographos, it can only fly along with it in solar orbit, maneuvering in its vicinity. A ship also cannot land and remain  on the hard surface, it will immediately drift off the surface. When maneuvering in the vicinity, have SurfaceMFD up so that the pilot can monitor the ship's altitude above the surface.
  
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1998 KY26 was released by Nighthawke in the Asteroid Pack 1.00 in November 2004. It is modeled in Orbiter as a 30 meter diameter object orbiting the Sun from 1 to 1.5 AU once every 1.37 years, with an eccentricity of 0.201 and an inclination of 1.48°. Rotation is a bit over 10 minutes.
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{| class="wikitable" style="text-align: center"
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|colspan="8"|<center>'''Orbiter versions and add-ons which include 1620 Geographos'''</center>
 +
|-
 +
!Add-on!!Source!!Version!!Author!!Type!!Release Date!!Compatibility!!Wiki article
 +
|-
 +
|[https://www.orbiter-forum.com/resources/asteroid-pack-1-00.2832/ Asteroid Pack 1.00]||O-F Resources||2004-11-21||Nighthawke||Scenery||21 November 2004||||
 +
|}
  
  
 
== Gallery ==
 
== Gallery ==
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<gallery widths="200" heights="200">
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<gallery widths="100" heights="100">
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1998 KY26 orbit.jpg|<center>Orbits of the inner planets showing the orbit of 1998 KY26 in white. From JPL Horizons.</center>
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Geographos-AsteroidPackv1zip-Orbiter2003P2.jpg|<center>1620 Geographos from ''AsteroidPack_v1.00.zip'' in Orbiter 2003P2</center>
 +
1620Geographos (Lightcurve Inversion).png|<center>3D model of 1620 Geographos based on light-curve model<br>from Wikimedia Commons</center>
 +
Animation_of_1620_Geographos_orbit.gif|Animation of the orbit of Geographos as compared to [[Venus]], [[Earth]] and [[Mars]] from 2010 to 2020.<br>From Wikimedia Commons.
 
</gallery>
 
</gallery>
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 +
{{SolarSystem}}
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[[Category:Articles|Geographos]]
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[[Category:Celestial bodies|Geographos]]
 +
[[Category:Solar System|Geographos]]
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[[Category:Near-Earth objects|Geographos]]

Latest revision as of 12:09, 30 September 2024

1620 Geographos
Geographos-AsteroidPackv1zip-Orbiter2003P2.jpg
1620 Geographos from AsteroidPack_v1.00.zip in Orbiter 2003P2
Designation
Name 1620 Geographos
Reference body Sun
Number of satellites 0
Planetary mean orbits
Epoch 2006
Semimajor axis (a) 186315638173.388 m
(1.24544311568598 AU)
Eccentricity (e) 0.335415102834536
Inclination (i) 0.232845464045468 radian
(13.3410623685705°)
Longitude of the ascending node (LAN, ☊) 5.88689533166951 radian
337.29425693993°
Longitude of periapsis (ϖ) 10.7178284350264 radian
614.086334872317°
Mean longitude (L) 12.5060362286656 radian
716.543094340244°
Rotational Elements
Sidereal Rotation Period 18802.8 seconds
(5.223 hours)
Sidereal Rotation Offset 0
Obliquity 0.1 radians
0°
Selected physical parameters
Mean radius 3450 m
Mass 4×10<su>12 kg
Equatorial gravity 0.000022 m/s2
Escape velocity 0.0004 m/s
Gravity at surface Geographos 1%
Sun 99%
Note *Elements given are from Geographos.cfg file.


1620 Geographos is a Near-Earth object discovered in 1951 by Albert George Wilson and w:Rudolph Minkowski at Palomar and is named in honor of the w:National Geographic Society.

Geographos was to be visited by the Clementine mission, but it failed to reach the body.

Geographos in Orbiter[edit]

1620 Geographos was modeled in Orbiter as a somewhat potato shaped object about 5 km on the longest dimension. Because the visual surface of Geographos is well below the hard radius of the body, landing anywhere on the body's radius you end up well above the visual surface. Because even at the surface, geographos only provides 1% of the local gravity, the Sun providing the other 99%, a ship cannot orbit Geographos, it can only fly along with it in solar orbit, maneuvering in its vicinity. A ship also cannot land and remain on the hard surface, it will immediately drift off the surface. When maneuvering in the vicinity, have SurfaceMFD up so that the pilot can monitor the ship's altitude above the surface.

Orbiter versions and add-ons which include 1620 Geographos
Add-on Source Version Author Type Release Date Compatibility Wiki article
Asteroid Pack 1.00 O-F Resources 2004-11-21 Nighthawke Scenery 21 November 2004


Gallery[edit]

  • 1620 Geographos from AsteroidPack_v1.00.zip in Orbiter 2003P2
  • 3D model of 1620 Geographos based on light-curve model
    from Wikimedia Commons

  • Animation of the orbit of Geographos as compared to Venus, Earth and Mars from 2010 to 2020.
    From Wikimedia Commons.

edit The Solar System
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Add-ons

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