691 Lehigh is a minor planet (the earlier term for an asteroid) orbiting the Sun, discovered in 1909. It is named "Lehigh" after Lehigh University, where its orbit was calculated in the Masters Thesis of Joseph B. Reynolds, following the observations of amateur astronomer Joel Metcalf. References External links Planet Lehigh: Early Astronomy, Lehigh University – Special Collections Lightcurve plot of 691 Lehigh, Palmer Divide Observatory, B. D. Warner (2009) Asteroid Lightcurve Database (LCDB), query form (info ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center Background asteroids Lehigh Lehigh Lehigh University CD:-type asteroids (Tholen) 19091211