Difference between revisions of "1620 Geographos"

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(1998 KY26.)
(→‎Geographos in Orbiter: Added content.)
 
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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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|colspan="2" align="center"|[[Image:1998 KY26.png|240px]]
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|colspan="2" align="center"|[[Image:1620 Geographos.png|240px]]
 
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|colspan="2" align="center"|'''1998 KY26 in Orbiter'''
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|colspan="2" align="center"|'''Geographos in Orbiter'''
 
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|-
 
!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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|-
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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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|-
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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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|-
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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 km<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°
 +
|-
 +
!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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|-
 
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|Mass||align="right"|1.35×10<sup>6</sup> kg
 
 
|-
 
|-
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!bgcolor="lightsteelblue" colspan="2"|Rotation elements
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|width="30%"|Mass||align="right" width="30%"|4×10<su>12</sup> kg
 
|-
 
|-
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|Sidereal rotation period||align="right"|642.24 hours (10m42.24s)
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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 offset||align="right"|0
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|width="30%"|Escape velocity||align="right" width="30%"| 0.0004 m/s
 
|-
 
|-
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|Obliquity||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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|Equatorial gravity||align="right"|1998 KY26 0%<br>Sun 100%
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|width="30%"|Note||align="right" width="30%"|*Elements given are from Geographos.cfg file.
 
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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.
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'''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]].
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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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The gravity of KY26 is so weak that OrbitMFD landed on the surface shows Sun 100% and KY26 0%. The pilot must be proactive to keep the ship on the surface.
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Geographos was to be visited by the [[w:Clementine mission]], failed to reach the body.
  
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== Geographos in Orbiter ==
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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.
  
 
== Gallery ==
 
== Gallery ==
 
<gallery widths="200" heights="200">
 
<gallery widths="200" heights="200">
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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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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.
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1998 KY26 DG landed South Pole.png|<center>DeltaGlider landed on 1998 KY26 at the South Pole.</center>
 
 
</gallery>
 
</gallery>
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{{SolarSystem}}
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[[Category:Articles|Geographos]]
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[[Category:Celestial bodies|Geographos]]
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[[Category:Solar System|Geographos]]
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[[Category:Near-Earth objects|Geographos]]

Latest revision as of 03:24, 27 May 2024

1620 Geographos
1620 Geographos.png
Geographos in Orbiter
Designation
Name 1620 Geographos
Reference body Sun
Number of satellites 0
Planetary mean orbits
Epoch 2006
Semimajor axis (a) 186315638173 km
(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.

Project home: Asteroid Pack 1.00
Author: Nighthawke
Current version: 2004-11-21
Compatibility: All versions


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 w:Clementine mission, 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.

Gallery[edit]

  • 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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