Asteroid_SheldonSchafer Asteroid_SheldonSchafer The asteroid - teacher lineage The lineage continues - Jacobus Kapteyn, asteroid 818 Kapteyna, was an instructor to Jan Schilt: Jan Schilt, asteroid Schilt, was an instructor to Tom Hamilton; Tom Hamilton, asteroid 4897 Tomhamilton was an instructor to Sheldon Schafer; and Sheldon Schafer, asteroid 17601 Sheldonschafer, has been an instructor to many, one of whom will surely have an asteroid named after him or her. 163649712