Tags: Asteroid.
12173 Lansbergen (provisional designation: 3135 T-3) is a main-belt minor planet. It was discovered by Cornelis Johannes van Houten Ingrid van Houten-Groeneveld and Tom Gehrels at the Palomar Observatory in San Diego County California on October 16 1977. It is named after Philippe van Lansberge a Dutch astronomer and Calvinist minister.