The official chart of all the constellation boundaries is maintained by the International Astronomical Union (IAU). Established in 1919, the IAU is responsible for standardizing astronomical nomenclature and classifications, including the delineation of the 88 constellations recognized today. Their work helps ensure consistency in the naming and mapping of celestial objects.
This is the series in reading order:A Wrinkle in TimeA Wind in the DoorMany WatersA Swiftly Tilting PlanetAn Acceptable TimeNote: "Many Waters" was published BEFORE "A Swiftly Tilting Planet", yet "Many Waters" occurs quite a few years before "A Swiftly Tilting Planet.
The settings in A Wrinkle in Time are the planets Earth, Muriel, Camazotz, and Ixchel.