bearbordersmall.GIF
mastheadsmall.gif
tighead.gif
A constellation representing the river Tigris, a real river of Mesopotamia which joins with the Euphrates in the modern Iraq. The constellation was introduced in 1612 by the Dutchman Petrus Plancius on the same globe that the river Jordan (Jordanus) made its first appearance. The celestial Tigris began at the neck of Pegasus and flowed between Cygnus and Aquila, an area now occupied by Johannes Hevelius’s later invention Vulpecula. It ended by the right shoulder of Ophiuchus in a V-shaped group of stars that was later to form another obsolete constellation, Taurus Poniatovii.

Like Jordanus, Tigris first appeared in print on the 1624 chart by Jacob Bartsch. Also like Jordanus, it was not adopted by Hevelius for his influential atlas of 1690, and they both became forgotten during the 18th century. Neither Tigris nor Jordanus were shown by Johann Bode.
Tigris.jpg

Tigris running from the neck of Pegasus, at right, to the shoulder of Ophiuchus at left, as seen on a planisphere from the 1666 edition of Planiglobium coeleste et terrestre by Isaac Habrecht II. (Image courtesy ECHO, Berlin.)



© Ian Ridpath. All rights reserved


startales.jpg