This is the documentation for the Trajectory Ontology. All instances of the Trajectory class are listed here. Trajectory is a spatiotemporal phenomenon that describes the motion trajectory of one ore more spatial phenomena in space and time.

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Documentation last generated on 2019-04-29 13:06 EDT.

#### ecliptic

This instance has a related Wikipedia page. Short extract:
The ecliptic is the mean plane of the apparent path in the Earth's sky that the Sun follows over the course of one year; it is the basis of the ecliptic coordinate system. This plane of reference is coplanar with Earth's orbit around the Sun (and hence the Sun's apparent path around Earth).

This instance is a narrower concept derived from path.

#### optical-path

This instance has a related Wikipedia page. Short extract:
The path that light takes in traversing an optical medium or system is often called the optical path. The physical length of an optical device can be reduced to less than the length of the optical path by using folded optics.

This instance is a narrower concept derived from path.

This instance has the following attributes:

#### orbit

This instance has a related Wikipedia page. Short extract:
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet. Normally, orbit refers to a regularly repeating trajectory, although it may also refer to a non-repeating trajectory.

This instance is a narrower concept derived from path.

#### trajectory

This instance has a related Wikipedia page. Short extract:
A trajectory or flight path is the path that an object with mass in motion follows through space as a function of time. In classical mechanics, a trajectory is defined by Hamiltonian mechanics via canonical coordinates; hence, a complete trajectory is defined by position and momentum, simultaneously.

This instance is a narrower concept derived from path.

#### transect

This instance has a related Wikipedia page. Short extract:
A transect is a path along which one counts and records occurrences of the species of study (e.g. plants).It requires an observer to move along a fixed path and to count occurrences along the path and, at the same time (in some procedures), obtain the distance of the object from the path.

This instance is a narrower concept derived from path.