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The Minor Planet Observer
and
Palmer Divide Observatory

11904 1991 TR1 (2012)

MPC Designation: 1991 TR1
Lightcurves Period (h): 18.34 ± 0.05
Amplitude (mag): 0.11 ± 0.02
Equipment:

 

Filter: C
MagBand: V
Telescope: 0.35m f/9.1 SCT
Camera: FLI 1001E
Exposure: 300

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2012-07-26 07:00  17.00   22.3  312.8   30.2
2012-08-13 07:00  16.93   22.3  314.7   30.6
2012-08-17 07:00  16.95   22.7  315.2   30.4
2012-08-19 07:00  16.96   23.0  315.4   30.3
2012-08-20 07:00  16.96   23.1  315.6   30.3
2012-08-21 07:00  16.97   23.2  315.7   30.2
2012-08-25 07:00  17.00   23.9  316.2   29.9

Data Points: 94
Discovered: 1991-10-13  Palomar  K. J. Lawrence
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)

The data were forced near the revised period found for the 2007 data. This is obviously a very weak solution.

 

Contents © 2012 Brian D. Warner / Palmer Divide Observatory

 

 

 

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