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The Minor Planet Observer
and
Palmer Divide Observatory

7757 1990 KO (2004)

MPC Designation: 1990 KO
Lightcurves Period (h): 5.98 ± 0.01
Amplitude (mag): 0.11 ± 0.02
Equipment:

 

Filter: C
MagBand: R
Telescope: 0.5m f/8.1 R/C
Camera: FLI KAF-1001E
Exposure: 90

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2004-08-08 06:00  15.56   28.1  292.4   32.6
2004-08-12 06:00  15.62   28.9  293.5   32.7
2004-08-13 06:00  15.64   29.0  293.7   32.7
2004-08-15 06:00  15.67   29.4  294.3   32.7
2004-08-16 06:00  15.69   29.6  294.6   32.7
2004-08-18 06:00  15.72   29.9  295.2   32.7

Data Points: 137
Discovered: 1990-05-22  Palomar  E. F. Helin
Family/Group: Phocaea
Taxonomic Class: S (Assumed)
Published: MPB 32, 4-7
NOTES: Unless otherwise stated, the "Reduced Magnitudes" in the plots are Cousins R, based on 2MASS to BVRI conversions (Warner, MPB 34, 113-119)

Ambiguous solution. Periods of 7.96 h and 11.94 h are also possible.

 

Contents © 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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