Sigma Alpha Epsilon | Delta Kappa Epsilon | Alpha Epsilon Pi | Sigma Phi Epsilon | Phi Sigma Epsilon | Tau Kappa Epsilon | Lambda Phi Epsilon | Epsilon Indi | Alpha Epsilon Delta | Upsilon Pi Epsilon | Theta Eridani | Sigma Iota Epsilon | Pi Sigma Epsilon | Nu Kappa Epsilon | Epsilon Pegasi | Epsilon | Delta Epsilon Sigma | Alpha Omega Epsilon | 53 Eridani |
His achievements have included discovering the extrasolar planets Pollux b, Epsilon Eridani b and HD 13189 companion.