88 regions.
A sky to explore.

Sources and conventions

Fact sheets adapted from Steve Cimolino’s volume II, Comprendre comment explorer le ciel, version dated 17 October 2026. French names and the selection of five stars are taken from the book. The Latin name of Apus was corrected against the IAU list.

Charts: IAU / Sky & Telescope, Roger Sinnott and Rick Fienberg; line figures by Alan MacRobert. Epoch J2000. CC BY 4.0. The book’s files were losslessly converted to WebP, without cropping or changes to the line figures. Names on the charts retain their original language.

Stars and magnitudes: data from the book adapted from HYG v4.1, David Nash, under CC BY-SA 4.0. The relevant adaptations retain this licence. Magnitudes are indicative, particularly for variable stars.