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orbital period

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.01 sec.
orbital period [′ȯr·bəd·əl ′pir·ē·əd]
(astronomy)
The interval between successive passages of a satellite through the same specified point in its orbit.


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If this is indeed the orbital period of a stellar companion, then it's likely a giant or supergiant star between three and five times the Sun's mass," Strohmayer said.
Which means that if you make an observation over a year, you expect a change in the orbital period of a few parts per million.
The squares of the orbital periods of planets are directly proportional to the cubes of the major axis (half the "length" of the ellipse) of the orbits.
 
 
 
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