Asteroid Lightcurve Data File
Hamanowa Astronomical Observatory
MPC code D91 Adati

212
Medea
Result Rotation Period : 0.428458 +/- 0.000010 day
Amplitude : 0.131 +/- 0.002 mag,
Observational date: 2011-Jan, 11, 18, 19, 22, 25, 27, 29, 30 (8 nights)
Zero time of the graph: 2011 Jan, 11.35000 day (UT)
Observational site: Hamanowa Astronomical Observatory (fukushima-pref, Japan)
Telescope : Pellow telescope (D=400mm fl=1800mm Newtonian F=4.5
CCD camera : SBIG ST-8
Filter system : Idas-R (UBVRI)
Dark and Flat : Dark-frame and Flat-field were corrected.
Light time : corrected.
Remarks :
Medea occults TYC 1839-00696-1 on 2011 Jan 8, 11h48m (UT).
The phase of Medea at the occultation:@0.32880 (above graph)

Asteroid lightcurve data top.