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The Minor Planet Observer
and
Palmer Divide Observatory

27776 Cortland (2012)

MPC Designation: 1992 DH1
Lightcurves Period (h): 2.6095 ± 0.0003
Amplitude (mag): 0.07 ± 0.01
Equipment:

 

Filter: C
MagBand: V
Telescope: 0.35m f/9.1 SCT
Camera: FLI 1001E
Exposure: 240

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2012-12-12 07:00  16.72   21.3   81.2   29.8
2012-12-13 07:00  16.71   21.2   81.3   29.7
2012-12-14 07:00  16.71   21.1   81.4   29.6
2012-12-17 07:00  16.71   21.0   81.7   29.2
2012-12-18 07:00  16.71   21.0   81.8   29.1
2012-12-21 07:00  16.72   21.1   82.0   28.7
2012-12-22 07:00  16.73   21.1   82.2   28.6

Data Points: 536
Discovered: 1992-02-25  Palomar  C. S. Shoemaker, D. H. Levy
Family/Group: Hungaria
Taxonomic Class: ES (Assumed)
Published: MPB 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)

Follow-up to work in 2009. The original results for 2009 were 20.50 h. Those data were re-analyzed and found to fit a period of 2.6104 h.

 

Contents © 2013 Brian D. Warner / Palmer Divide Observatory

 

 

 

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