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The Minor Planet Observer
and
Palmer Divide Observatory

6901 Roybishop (2008)

MPC Designation: 1989 PA
Lightcurves Period (h): 4.682 ± 0.002
Amplitude (mag): 0.04 ± 0.01
Equipment:

 

Filter: C
MagBand: R
Telescope: 0.35m f/10 SCT
Camera: SBIG ST-9XE
Exposure: 240

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2008-07-31 07:00  16.04   13.4  317.0   17.5
2008-08-01 07:00  16.03   13.3  317.0   17.8
2008-08-02 07:00  16.02   13.2  317.0   18.0
2008-08-04 07:00  16.01   13.1  317.1   18.4
2008-08-12 00:00  16.02   13.8  317.2   19.9
2008-08-13 07:00  16.02   14.1  317.2   20.1
2008-08-14 07:00  16.03   14.3  317.3   20.3
2008-08-21 07:00  16.12   16.4  317.4   21.4
2008-08-22 07:00  16.13   16.8  317.5   21.6
2008-08-28 07:00  16.24   19.0  317.8   22.4
2008-08-31 07:00  16.29   20.1  318.0   22.7
2008-09-04 07:00  16.37   21.6  318.4   23.2

Data Points: 386
Discovered: 1989-08-02  Palomar  C. S. Shoemaker, E. M. Shoemaker
Family/Group: Hungaria
Taxonomic Class: ES (Assumed)
Published: MPB 36, 7-13
NOTES: Unless otherwise stated, the "Reduced Magnitudes" in the plots are Cousins R, based on 2MASS to BVRI conversions (Warner, MPB 34, 113-119)

Strong binary suspect. Two possible "events" of 0.08 mag captured. This gives Ds/Dp = 0.27 ± 0.02.

 

Contents © 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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