Octave Callandreau

Pierre Jean Octave Callandreau (18 September 1852 – 13 February 1904) was a French astronomer who contributed to celestial mechanics on the calculation of orbits and the use of perturbations.

His doctoral work continued on the topic at the Faculty of Sciences, Paris and his thesis was on the application of Gyldén's method to the perturbations of minor planets.

Callandreau was elected to the Académie des Sciences in 1892 and became a professor of astronomy at the École Polytechnique the next year.

He began a large scale study of shooting stars when he became a president of the Société Astronomique de France in 1899.

[1][2] Callandreau was married from 1882 to Sophie de Luynes, daughter of an arts professor, and they had seven children.