True longitude
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In celestial mechanics, true longitude is the ecliptic longitude at which an orbiting body could actually be found if its inclination were zero. Together with the inclination and the ascending node, the true longitude can tell us the precise direction from the central object at which the body would be located at a particular time.
Calculation
The true longitude lScript error: No such module "Check for unknown parameters". can be calculated as follows:[1][2][3]
- l = ν + ϖScript error: No such module "Check for unknown parameters".
where:
- νScript error: No such module "Check for unknown parameters". is the orbit's true anomaly,
- ϖ ≡ ω + ΩScript error: No such module "Check for unknown parameters". is the longitude of orbit's periapsis,
- ωScript error: No such module "Check for unknown parameters". is the argument of periapsis, and
- ΩScript error: No such module "Check for unknown parameters". is the longitude of the orbit's ascending node,
References
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