The Carlbserg Meridian Circle photometry is quite useful for
doing coarse phase curve studies of asteroids. A weakness is
that an object is measured only once per night. Good knowledge
about the rotational light variation is required in order to
subtract this variation and obtain good phase curves. A good
property is the excellent range of solar phase angles, often
covering a large part of the interval from 
to 
,
which is more than one usually finds for manual photometric observations.
Phase curves measured in the period 1990 to 1993 indicate that one should be careful in determining the physical properities of an asteroids if the range of phase angles is not high enough. The H and G-values are very sensitive to range and amount of data.
Finally axial ratio estimation of asteroid shapes is a new way to make Carslberg Meridian Circle data useful. The b/c-values obtained here have probable errors of about the same size as the dispersion in the values obtained from inversion of lightcurves. The shape determination would benefit from a few additional apparitions of data. Also, as more spin axis determinations become available a larger fraction of the CAMC observations will become useful for shape determination.
Table 5: Results of HG-fits to the data of each asteroid and apparition.
The columns give the H and G-values with their estimated errors,
the number N of magnitude measurements, the root-mean-square
error of the fit, and the phase angle range (degrees) of the data.
Note that we have included all results, even when
the size of the uncertainty is comproble to the value.
The mean H and G-values for each asteroid were computed with
weights taking the error estimates for individual apparitions into account
Part 1 (table 5)
Part 2 (table 5)
Part 3 (table 5)
Part 4 (table 5)
Part 5 (table 5)
Part 6 (table 5)
Acknowledgements
Jukka Piironen was supported by the NorFA-foundation (Oslo, Norway). Per Magnusson was supported by the Swedish National Space Board (``Rymdstyrelsen'') and by the Swedish Natural Science Research Council (``NFR'').
