out of curiosity I have taken the astrometric data of MPEC 2002-O45 and
analysed them with FindOrb. Interestingly a elliptic solution is still
possible, showing even smaller residuals although only slightly. The
periods I received ranged between about 120 years (all observations) and
20 years (247 observations, thrown out the ones with the highest
residuals of the parabolic solution).
PLEASE, do not take this result for real and announce it as official and
correct! The observed arc is still too short to decide about an
elliptical solution. I guess it will take at least some weeks to say
something definite about it. A ellipse of shorter period should be
detected earlier than the longer period ones.
Nevertheless, the coming astrometry will be very interesting.
Oh, yes, of course, this comet would not receive a P/ unless its period
is lower than 20 years, else we would have to wait for the next perihelion.
Kind regards, Maik
If they give you ruled paper, write the other way. * Juan Ramon Jimenez
German Comet Section http://www.fg-kometen.de