References
ESA. 1997, The Hipparcos and Tycho Catalogues (ESA SP-1200) (Nordwij: ESA)
Høg, E., Fabricius, C., Makarov, V. V., Bastian, U., Schwekendiek, P., Wicenec, A., Urban, S.,
Corbin, T., & Wycoff, G. 2000, A&A, 357, 367; see also A&A, 355, L27
Urban, S. E., Wycoff, G. L., & Makarov, V. V. 2000, AJ, 120, 501
Mason, B. D., Wycoff, G. L., Hartkopf, W. I., Douglass, G. G., & Worley, C. E. 2000, AJ, 122,
3466 (see also http://ad.usno.navy.mil/ad/wds/wds.html)
Point of contact:
George Kaplan, U.S. Naval Observatory, Washington, DC,
1-202-762-0599,
gkaplan@usno.navy.mil
