pdosmall.gif (6581 bytes)

The Minor Planet Observer
and
Palmer Divide Observatory

7187 Isobe (2011)

MPC Designation: 1992 BW
Lightcurves Period (h): 4.2437 0.0003
Amplitude (mag): 0.13 0.01
Equipment:

 

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

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2011-02-12 07:00  15.33    6.0  149.0   -6.9
2011-02-13 07:00  15.32    5.7  149.0   -7.1
2011-02-15 07:00  15.30    5.3  148.9   -7.5
2011-02-28 07:00  15.56    9.3  148.8   -9.8
2011-03-01 07:00  15.59    9.8  148.8   -9.9
2011-03-02 07:00  15.62   10.3  148.8  -10.1

Data Points: 234
Discovered: 1992-01-30  Palomar  E. F. Helin
Family/Group: Hungaria
Taxonomic Class: ES (Assumed)
Published:
NOTES: Unless otherwise stated, the "Reduced Magnitudes" in the plots are Cousins R, based on 2MASS to BVRI conversions (Warner, MPB 34, 113-119)

Following initial analysis of 2012 data, those from 2004, 2007, and 2011 were again reviewed for the possibility of a satellite. The 2007 apparaition shows a very good possibility of a satellite with an orbital period of 31.98 h. The 2004 data give 31.79. The data from 2011 give a very marginal secondary solution.

 

Contents 2012 Brian D. Warner / Palmer Divide Observatory

 

 

 

This site is best viewed at 1024x768 and higher

This page was last updated on 16:09:40 2012-09-11 (Mountain Time)
All contents copyright (c) 2001-2012, Brian D. Warner and Bdw Publishing
Trademarks are the property of their repsective owners

Contact webmaster