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abstraction > mathematical concept > number > quantity > orbital quantity > orbital element > period

period comparison table

Subject	is an instance of	has unit	is a kind of	see also	has symbol	has definition	is requir
orbital element			orbital quantity	osculating element		One of seven quantities that must be established from observations in order to define the size, shape, and orientation of an orbit in space.	to define the size, shape, and orientation of an orbit in space
time		time unit	quantity			A dimension distinguishing past, present, and future. In relativity, time is portrayed as a geometrical dimension, analogous to the dimensions of space.
period	time	time unit		osculating element	P	An orbital element representing the time required to complete an orbit. This parameter is required when determining the orbit of a binary star system in which the mass is not known.	to define the size, shape, and orientation of an orbit in space

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