Lightcurves of centaurs 2000 QC243 and 2001 PT13

DOI: 
Publication date: 
01/01/2002
Main author: 
Ortiz J.L.
IAA authors: 
Ortiz J.L.;Gutiérrez P.J.
Authors: 
Ortiz J.L., Baumont S., Gutiérrez P.J., Roos-Serote M.
Journal: 
Astronomy and Astrophysics
Publication type: 
Article
Volume: 
388
Pages: 
661-666
Number: 
Abstract: 
We present CCD photometric observations of Centaurs 2000 QC243 and 2001 PT13. For 2000 QC243, a large amplitude period is found at 4.57 h ± 0.05 h, which likely corresponds to half the rotation period of the body, or coincides with the full rotation period, depending on whether the variability is induced by an irregular shape or by albedo features. The apparent double-peaked lightcurve favors the first interpretation. The large amplitude of the oscillations imply a very irregular shape for this object or a large albedo asymmetry between the two hemispheres. For 2001 PT13, a clear period of 4.15 h ± 0.05 h was detected, with an amplitude of 0.16 mag. Since 4.15 h is close to the breakup limit for typical cometary densities and tensile strengths, 8.3 h appears to be a more likely rotation period.
Database: 
SCOPUS
Keywords: 
Kuiper belt; Minor planets, asteroids