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crossing time
subjectfact 
crossing timehas definition The time it takes a particle to travel from one point in its orbit to another point 180° away.has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:25.0
is an instance of time2001-09-27 09:33:25.0
timehas unit time unit2001-09-27 09:33:25.0
numberhas value2001-09-27 09:32:57.0