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The Minor Planet Observer
and
Palmer Divide Observatory

2131 Mayall (2004)

MPC Designation: 1975 RA
Lightcurves Period (h): 2.5679 ± 0.0002
Amplitude (mag): 0.08 ± 0.02
Equipment:

 

Filter: C
MagBand: R
Telescope: 0.5m f/8.1 R/C
Camera: FLI 1024 SITe
Exposure: 180

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2004-12-25 09:00  15.45   18.4  122.3   11.6
2004-12-26 07:00  15.42   17.9  122.3   11.4
2005-01-02 08:00  15.21   13.9  122.2    9.8
2005-01-07 10:00  15.05   10.8  122.0    8.6
2005-01-08 07:00  15.03   10.3  122.0    8.4
2005-01-11 07:00  14.93    8.3  121.8    7.6

Data Points: 493
Discovered: 1975-09-03  Mount Hamilton  A. R. Klemola
Family/Group: Hungaria
Taxonomic Class: S
Published: MPB 32, 54-58
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 period was reported as 2.572 ± 0.002 in the MPB paper. The period shown here provides a better fit.

This asteriod would be discovered to be binary in 2010. There were no signs of mutual events or a second period in the 2004 data.

 

Contents © 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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