What is state vectors: Definition + 1 Threads

In astrodynamics and celestial dynamics, the orbital state vectors (sometimes state vectors) of an orbit are
Cartesian vectors of position (




r



{\displaystyle \mathbf {r} }

) and velocity (




v



{\displaystyle \mathbf {v} }

) that together with their time (epoch) (



t


{\displaystyle t}

) uniquely determine the trajectory of the orbiting body in space.: 154 
Orbital state vectors come in many forms including the traditional Position-Velocity vectors, Two-line element set (TLE), and Vector Covariance Matrix (VCM).

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  1. hongseok

    B Questions about state vectors

    ∣r⟩,∣l⟩,∣i⟩, and ∣o⟩ can all be expressed as expressions for ∣u⟩ and ∣d⟩. So, given the state vector ∣ψ⟩ = α∣u⟩ + β∣d⟩, is it possible to know not only the probability of ∣u⟩ but also the probability of ∣r⟩ and ∣i⟩? ∣ψ⟩ can be expressed as an expression for ∣r⟩, ∣l⟩ or ∣i⟩, ∣o⟩.
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