Asteroid Lightcurve Data File
Hamanowa Astronomical Observatory
MPC code D91 Adati

657
Gunlod
Result Rotation Period : 0.652716 +/- 0.00005 day
Amplitude : 0.193 +/- 0.003 mag,
Observational date: 2008-Dec, 01 03 04 06 07 20 21 27 27 Jan, 01 (104nights)
Zero time of the graph: 2008 Dec, 01.40000 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 : The occultation event by (657)Gunlod was observed at Japan on 2008 November 30. The phase of Gunlod on that time(0.962) was shown by the red line.

Asteroid lightcurve data top.