(326) Tamara

From Wikipedia:
326 Tamara is a large (93 km) Main belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material. It was discovered by Johann Palisa on March 19, 1892 in Vienna.

Link to CdR-CdL website: Click here The period calculated by Raoul Behrend is a bit different, some measurements have been rejected for the fit.


Observation Francois KUGEL with
  • 80mm F/5 refractor
  • ST8300 SBig CCD camera (2x2 binning)
  • IR 742nm cut-off filter
Processing Jerome CARON with AsPyLib library.

Official (MPC, Harris database) Measured (fit with 4 Fourier terms)
Rotation period (hours) 14.184 14.4701 +/- 0.0024
Rotation period (days) 0.591 0.60292 +/- 0.00010
Amplitude of mag variations 0.11 0.211

Magnitude during the observations: 11.8 to 12.8

Searching the period

Search of best fit using 4 harmonics.
Most likely period = 0.6015 days, this value is close to the official period (but slightly different).