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The Minor Planet Observer
and
Palmer Divide Observatory

5390 Huichiming (2007)

MPC Designation: 1981 YO1
Lightcurves Period (h): 110. ± 20.
Amplitude (mag): 0.75 ± 0.10
Equipment:

 

Filter: C
MagBand: R
Telescope: 0.35m f/9.1 SCT
Camera: SBIG STL-1001E
Exposure: 180

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2007-05-11 07:00  15.46   14.9  221.5   23.3
2007-05-12 07:00  15.46   15.1  221.5   23.1
2007-05-13 07:00  15.47   15.2  221.5   23.0
2007-05-18 07:00  15.52   16.0  221.6   22.1
2007-05-19 07:00  15.53   16.2  221.6   22.0

Data Points: 411
Discovered: 1981-12-19  Nanking  Purple Mountain Observatory
Family/Group: Hungaria
Taxonomic Class: ES (Assumed)
Published: MPB 38, 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)

Reported in MPB 34, 104-107, as P = 33.6 h. Re-measurement of the images using 2MASS to BVRI conversion confirms a long period found in 2008.

 

Contents © 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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