Ephemeris An ephemeris is a table giving the predicted positions of an object in space, like another planet, comet, or asteroid. vteChronologyKey topics Archaeology Astronomy Geology History Big History Paleontology Time PeriodsErasEpochsCalendar eras Human Era Ab urbe condita Anno Domini / Common Era Anno Mundi Bosporan era Bostran era Byzantine era Seleucid era Era of Caesar (Iberia) Before present Hijri Egyptian Sothic cycle Hindu units of time (Yuga) Mesoamerican Long Count Short Count Tzolk'in Haab' Regnal year Anka year Canon of Kings English and British regnal year Lists of kings Limmu Era names Chinese Japanese Korean Vietnamese CalendarsPre-Julian / Julian Pre-Julian Roman Original Julian Proleptic Julian Revised Julian Gregorian Gregorian Proleptic Gregorian Old Style and New Style dates Adoption of the Gregorian calendar Dual dating Astronomical Lunisolar (Hebrew, Hindu) Solar Lunar (Islamic) Astronomical year numbering Others Chinese sexagenary cycle Geologic Calendar Iranian ISO week date Mesoamerican Maya Aztec Winter count New Earth Time Astronomic time Cosmic Calendar Ephemeris Galactic year Metonic cycle Milankovitch cycles Geologic timeConcepts Deep time Geological history of Earth Geological time units Standards Global Standard Stratigraphic Age (GSSA) Global Boundary Stratotype Section and Point (GSSP) Methods Chronostratigraphy Geochronology Isotope geochemistry Law of superposition Luminescence dating Samarium–neodymium dating ChronologicaldatingAbsolute dating Amino acid racemisation Archaeomagnetic dating Dendrochronology Ice core Incremental dating Lichenometry Paleomagnetism Radiometric dating Lead–lead Potassium–argon Radiocarbon Uranium–lead Tephrochronology Luminescence dating Thermoluminescence dating Relative dating Fluorine absorption Nitrogen dating Obsidian hydration Seriation Stratigraphy Genetic methods Molecular clock Linguistic methods Glottochronology Related topics Chronicle New Chronology Synchronoptic view Timeline Year zero Floruit Terminus post quem ASPRO chronology This short article about science can be made longer. You can help Wikipedia by adding to it.