taevamehaanika seaduste põhjal arvutatud tabelid, mis sisaldavad taevakehade (peamiselt tähtede, komeetide, planeetide ja Päikesesüsteemi tehiskehade) asendeid mingite kindlate ajahetkede jada ulatuses
a collection of data about the predicted positions (or apparent positions) of celestial objects, including artificial satellites, at various times in the future
In the context of this website, “orbits” refers to orbital elements while “ephemerides” refers to data that represent the trajectory of an object over time.