1. California Institute of Technology (United States)
2. Jet Propulsion Lab. (United States)
3. Academia Sinica Institute of Astronomy and Astrophysics (Taiwan)
4. Univ. of California, Irvine (United States)
5. National Astronomical Observatories (China)
6. The Univ. of Chicago (United States)
7. Univ. of California Irvine (United States)
8. Rochester Institute of Technology (United States)