Astrometric observations of comets and asteroids and subsequent orbital investigations
- McCrosky, Richard E.; Marsden, Brian G.
- Smithsonian Astrophysical Observatory, Cambridge, MA
Observations were made with the 155-cm reflector at the Oak Ridge Observatory.
Since the last semiannual report (issued in November 1988) there have been 20
observations of comets, 146 of numbered minor planets and 135 of minor planets
that were unnumbered at the time of observation. The orbit computations made
during this period mainly applied to new discoveries, which have recently been
exceptionally numerous. 1989 has already produced five new Apollo objects, and
the new-moon period in early January produced a record six new comets.
Final Report, 1 Nov. 1973 - 31 Mar. 1989 Smithsonian Astrophysical
Observatory, Cambridge, MA.