- Category : Science-Astronomy
- Type : GP
- Profile : 5/1 - Heretical / Investigator
- Definition : Quadruple Split (11,13,15,23,29,38,45,50)
- Incarnation Cross : LAX Distraction 2
Belgian astronomer who did most of his work in Brazil where he accepted the position of director of the Observatory of Rio de Janeiro in 1881. In 1878, he published his work on the planet Mars. He observed the transit of Venus in 1882 from Punta Arenas, and was one of the astronomers (along with William Henry Finlay) credited with the discovery of the Great Comet of 1882, which went on to become perhaps the brightest comet in recorded history.