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The Minor Planet Observer
and
Palmer Divide Observatory

5641 McCleese (2010)

MPC Designation: 1990 DJ
Lightcurves Period (h): 418. 10.
Amplitude (mag): 1.30 0.05
Equipment:

 

Filter: C
MagBand: R
Telescope: 0.35m f/9.1 SCT
Camera: SBIG STL-1001E
Exposure: 240

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2010-05-16 07:00  15.74   32.1  264.3   33.8
2010-05-17 07:00  15.73   31.9  264.6   33.8
2010-06-01 07:00  15.56   28.8  267.9   33.9
2010-06-03 07:00  15.54   28.4  268.3   33.8
2010-06-07 07:00  15.50   27.6  269.0   33.6
2010-06-08 07:00  15.49   27.4  269.1   33.5
2010-06-10 07:00  15.47   27.0  269.4   33.4
2010-06-11 07:00  15.47   26.8  269.6   33.3
2010-06-15 07:00  15.44   26.1  270.1   32.9
2010-06-18 07:00  15.43   25.6  270.5   32.6
2010-06-19 07:00  15.42   25.4  270.7   32.5
2010-06-20 07:00  15.42   25.3  270.8   32.4
2010-06-21 07:00  15.42   25.1  270.9   32.2
2010-06-22 07:00  15.42   25.0  271.0   32.1
2010-06-23 07:00  15.41   24.9  271.2   31.9
2010-06-24 07:00  15.41   24.8  271.3   31.8
2010-06-28 07:00  15.42   24.4  271.8   31.1
2010-06-30 07:00  15.43   24.3  272.0   30.8
2010-07-02 07:00  15.43   24.3  272.3   30.4

Data Points: 915
Discovered: 1990-02-27  Palomar  E. F. Helin
Family/Group: Hungaria
Taxonomic Class: A
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)

The 2005 apparition presented a completely different lightcurve, one of low amplitude, a period of 7 or 14 h, and unusual features.

 

Contents 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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