Over the course of several evenings in June 1995, student observers from Apple Valley Science and Technology Center in California, and Thomas Jefferson High School for Science and Technology in Virginia, participated in a joint effort to establish refined positions for the planet Pluto. Pluto's close passage to SAO 140853, a star whose coordinates are precisely known, will enable scientists to more accurately calculate Pluto's orbit. The accuracy of the distant planet's orbit is paramount in plans for spacecraft missions to Pluto and Charon.
Hennig, L. A. A. (1996). Telescopes in Education. In J. A. Percy (Ed.) Astronomy Education: Current Developments, Future Coordination, ASP Conf. Series (Vol.89, pp.297). San Francisco, CA: ASP