In astrodynamics or celestial dynamics **orbital state vectors** (sometimes **state vectors**) are cartesian vectors of position and velocity that together with their time (epoch) uniquely determine the trajectory of a body in space.

Read more about Orbital State Vectors: Frame of Reference, Position Vector

### Other articles related to "orbital state vectors, vector, state vector, orbital, state":

**Orbital State Vectors**- Position Vector - Derivation

... The velocity

**vector**can be derived from position

**vector**by differentiation with respect to time An object's

**state vector**can be used to compute its classical or Keplerian

**orbital**... of an orbit, and the elements may be used to quickly and easily estimate the object's

**state**at any arbitrary time provided its motion is accurately modeled by the two-body problem with only small perturbations ... On the other hand, the

**state vector**is more directly useful in a numerical integration that accounts for significant, arbitrary, time-varying forces such as drag, thrust and gravitational perturbations from ...

Eccentricity Vector - Calculation

... The eccentricity

... The eccentricity

**vector**can be calculated where is**orbital**velocity**vector**, is**orbital**angular momentum**vector**, is**orbital**position**vector**, is standard gravitational parameter ... or equivalently from the**orbital state vectors**by where is velocity**vector**of the**orbital state vectors**, is position**vector**of the**orbital state vectors**, is standard ...### Famous quotes containing the word state:

“The fate of the poor shepherd, who, blinded and lost in the snow-storm, perishes in a drift within a few feet of his cottage door, is an emblem of the *state* of man. On the brink of the waters of life and truth, we are miserably dying.”

—Ralph Waldo Emerson (1803–1882)

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