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The Minor Planet Observer
and
Palmer Divide Observatory

6859 Datemasamune (2011)

MPC Designation: 1991 CZ
Lightcurves Period (h): 86.1 ± 0.3
Amplitude (mag): 0.16 ± 0.01
Equipment:

 

Filter: C
MagBand: R
Telescope: 0.5m f/8.1 R/C
Camera: FLI 1001E
Exposure: 180

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2011-03-05 07:00  15.35    9.4  172.3   10.1
2011-03-10 07:00  15.30    8.5  172.3   11.3
2011-03-11 07:00  15.30    8.6  172.3   11.5
2011-03-12 07:00  15.30    8.6  172.3   11.8
2011-03-14 07:00  15.32    8.9  172.3   12.2
2011-03-15 07:00  15.33    9.2  172.3   12.5
2011-03-16 07:00  15.35    9.5  172.3   12.7
2011-03-23 07:00  15.49   12.4  172.4   14.2
2011-03-24 07:00  15.52   12.9  172.4   14.4
2011-03-26 07:00  15.57   13.9  172.4   14.8

Data Points: 559
Discovered: 1991-02-13  Ayashi  M. Koishikawa
Family/Group: Hungaria
Taxonomic Class: ES (Assumed)
Published: MPB 38, pending
NOTES: Unless otherwise stated, the "Reduced Magnitudes" in the plots are Cousins R, based on 2MASS to BVRI conversions (Warner, MPB 34, 113-119)

Data from 2006 and 2009 give significantly different results between each other let alone the period given here. All have been rated U = 1 because of the widely divergent solutions.

 

Contents © 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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