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Lightcurves
259 Aletheia

Period 12.225 hours

Earlier results from fragmentary data estimated the period at 15.0 hours, so this object requires further study.

259 Aletheia CP 178.60 7.76 .0436 15. 0.19 1 A
Weidens. 90 6/86,12/88 15. 0.14-0.19 1
Zeigler *
Harris 5/86 L *

Weidens. 90 Weidenschilling, S.J., Chapman, C.R., Davis, D.R., Greenberg, R., Levy, D.H., Binzel, R.P., Vail, S.M., Magee, M., Spaute, D.: 1990, Icarus 86, 402-447.

Four nights of observations were collected:
 
Feb. 11, 2002 - 76 observations over 4 1/2 hours
Feb. 17, 2002 - 34 observations over 2 1/2 hours
Feb. 21, 2002 - 86 observations over 5 hours
Feb. 22, 2002 - 58 observations over 4 hours
 
The best solution was robust with some odd clusters of data.  Only the very best images were used in the solution.  The amplitude is low and the light curve has a rather unusual shape.  More data will be collected, but not immediately due to the probable 12.2 hour period. 
 

259-4n50.jpg

This curve is odd in shape and will be interesting to study further with more data.

MPO Data files available on request.