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The Minor Planet Observer
and
Palmer Divide Observatory

9387 Tweedledee (2013)

MPC Designation: 1994 CA
Lightcurves Period (h): 3.535 ± 0.002
Amplitude (mag): 0.09 ± 0.01
Equipment:

 

Filter: C
MagBand: V
Telescope: 0.30m f/6.25 SC
Camera: ST-9XE
Exposure: 300

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2013-02-12 07:00  15.74    5.6  151.9    2.2
2013-02-13 07:00  15.71    4.9  151.9    2.0
2013-02-16 07:00  15.59    2.9  151.8    1.5
2013-02-17 07:00  15.54    2.3  151.8    1.3
2013-02-19 06:00  15.45    1.0  151.8    0.9
2013-02-19 10:30  15.44    0.9  151.8    0.9

Data Points: 232
Discovered: 1994-02-02  Fujieda  H. Shiozawa, T. Urata
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)

Followup to 2006 observations. The original period of 7.08 h just wouldn't work with the 2013 data. However, the 2006 data did find a solution of 3.543 h and was more convincing, especially in light of the 2013 results.

 

Contents © 2013 Brian D. Warner / Palmer Divide Observatory

 

 

 

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