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The Minor Planet Observer
and
Palmer Divide Observatory

4125 Lew Allen (2009)

MPC Designation: 1987 MO
Lightcurves Period (h): 4.625 ± 0.002
Amplitude (mag): 0.44 ± 0.02
Equipment:

 

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

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2009-12-11 07:00  16.67   18.9  113.7   -4.1
2009-12-13 07:00  16.62   18.0  113.8   -4.4
2009-12-14 07:00  16.59   17.6  113.9   -4.5

Data Points: 154
Discovered: 1987-06-28  Palomar  E. F. Helin
Family/Group: Hungaria
Taxonomic Class: ES (Assumed)
Published: MPB 36, 57-64
NOTES: Unless otherwise stated, the "Reduced Magnitudes" in the plots are Cousins R, based on 2MASS to BVRI conversions (Warner, MPB 34, 113-119)

 

Contents © 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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