Johannis Heckeri Motuum caelestium ephemerides, title page
AuthorHecker, Johann, 1625-1675
Page image from bound volume which has the following bibliographic description: 1 volume (various pagings) illustrations 23 cm
An "ephemerides" (from Latin ephemeris meaning "diary")gives the positions of naturally occurring astronomical objects in the sky at a given time. As in Kepler'sRudolphine Tables, positions are given as printed tables given at regular intervals of date and time.
Astronomy--Early works to 1800