Member Directory The AAS maintains a membership directory to facilitate member interaction and to support the conduct of official Society business. Search directory for: Filter Results By Clear Filters Type of Science Astrobio (1) Heliophy (1) Solar System/Planetary Sci (1) (-) Exopla (1) State CA (3) CO (2) FL (1) IA (1) KS (1) MA (3) MD (4) NH (1) NM (1) OR (1) TX (1) VA (3) (-) AZ (1) Facet State City Flagstaff (1) Facet City Membership Class Undergrad Student (1) (-) Full Member (1) Facet Membership Class Division DPS (6) HEAD (6) DDA (1) (-) SPD (1) Facet Division Showing 1-1 of 1 results Christoph Keller Full Member Affiliation Lowell Observatory State/Province AZ Country United States