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The Minor Planet Observer
and
Palmer Divide Observatory

17129 1999 JM78 (2012)

MPC Designation: 1999 JM78
Lightcurves Period (h): 6.2618 ± 0.0003
Amplitude (mag): 0.51 ± 0.02
Equipment:

 

Filter: C
MagBand: V
Telescope: 0.30m f/6.25 SC
Camera: ST-9XE
Exposure: 240

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2012-05-05 07:00  16.39   12.9  245.1   19.1
2012-05-09 07:00  16.33   11.9  245.2   19.1
2012-05-10 07:00  16.32   11.7  245.3   19.1
2012-06-01 07:00  16.18    9.5  245.8   18.7
2012-06-02 07:00  16.18    9.6  245.8   18.6

Data Points: 209
Discovered: 1999-05-13  Socorro  LINEAR
Family/Group: MB-middle
Taxonomic Class: SC (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)

Full moon project. Initial result of 6.09 h contradicted earlier result (Ditteon, R.; West, J. (2011) Minor Planet Bul. 38, 214-217, U = 3). Additional data at PDO in 2012 found the "correct" period.

 

Contents © 2012 Brian D. Warner / Palmer Divide Observatory

 

 

 

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