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The Minor Planet Observer
and
Palmer Divide Observatory

6310 Jankonke (2012)

MPC Designation: 1990 KK
Lightcurves Period (h): 3.076 ± 0.002
Amplitude (mag): 0.10 ± 0.01
Equipment:

 

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

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2012-11-21 07:00  15.71   10.1   58.2  -14.3
2012-11-22 07:00  15.70   10.0   58.2  -14.1
2012-11-24 07:00  15.70   10.0   58.2  -13.7

Data Points: 123
Discovered: 1990-05-21  Palomar  E. F. Helin
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 2005 (P = 3.043; U = 2); 2008 (P = 3.080; U = 3-); 2011 (P = 3.0433, U = 2+). The 2011 data can also be made to fit a period of about 3.07 h. The 2005 data are very noisy. Hamanowa and Behrend have both reported 3.04 h. The 2012 data cannot be made to fit that.

 

Contents © 2012 Brian D. Warner / Palmer Divide Observatory

 

 

 

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