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The Minor Planet Observer
and
Palmer Divide Observatory

4217 Engelhardt (2011)

MPC Designation: 1988 BO2
Lightcurves Period (h): 3.0661 0.0002
Amplitude (mag): 0.18 0.02
Equipment:

 

Filter: C
MagBand: R
Telescope: 0.5m f/8.1 R/C
Camera: FLI 1001E
Exposure: 240

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2011-12-08 07:00  15.37   24.0   36.6   24.6
2011-12-09 07:00  15.39   24.2   36.8   24.6
2011-12-10 07:00  15.42   24.4   37.0   24.6
2011-12-11 07:00  15.44   24.5   37.2   24.6
2011-12-12 07:00  15.47   24.7   37.4   24.6
2011-12-14 07:00  15.52   25.0   37.9   24.7
2011-12-15 07:00  15.54   25.2   38.1   24.7
2011-12-16 07:00  15.57   25.3   38.3   24.7
2011-12-17 07:00  15.59   25.5   38.6   24.7
2011-12-18 07:00  15.61   25.6   38.8   24.7
2011-12-19 07:00  15.64   25.7   39.1   24.7

Data Points: 451
Discovered: 1988-01-24  Palomar  C. S. Shoemaker
Family/Group: Phocaea
Taxonomic Class: S
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)

Possible mutual events (occultation/eclipse) due to a satellite observed but not sufficiently confirmed. Secondary period of 36.03 h fits the alleged events.

 

Contents 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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