Obrázok:Orbital elements.svg
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P2 | Ecliptic plane |
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♈ | Vernal point |
S | Primary, e.g. Sun |
P1 | Orbital plane |
a | Semi-major axis |
☊ | Ascending node |
Ω | Longitude of the ascending node |
i | Inclination |
P | Periapsis |
ω | Argument of periapsis |
[edit] Summary
Description |
Schematics showing the orbital elements of an heliocentric orbit. |
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Source |
This is a modified version of Bahnelemente.svg (GFDL) by ArtMechanic. The original version has been "internationalised", no sentences in any language are present. |
Date |
Modified 3. Mar. 2006. |
Author | |
Permission |
Brandir put it under the GFDL |
Other versions | Image:Bahnelemente.svg |
[edit] Licensing
[edit] Notes
- The longitude of periapsis is defined as the sum of the longitude of the ascending node and the argument of periapsis. It is a numerically convenient way of expressing the same quantity, but which does not have a direct geometrical meaning.
- The orbital focus S has been set here to the primary's position, which is the way orbits are defined in astronomy. It is also possible to express the orbital mechanics by setting S to the system's centre of mass (a barycentric orbit), in which case the semi-major axis will be smaller by a factor of up to 2.
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