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Photometric Measurements of 2167 Erin in V Band

University of Wisconsin-Eau Claire Asteroid Group
  George Stecher, gstecher@uwec.edu
  Lyle Ford, fordla@uwec.edu
  Kayla Lorenzen
  Sarah Ulrich

  Department of Physics and Astronomy
  University of Wisconsin-Eau Claire
  105 Garfield Ave.
  Eau Claire, Wisconsin 54702-4004
  USA

  http://www.uwec.edu/physics/asteroid/

Measurements made at Hobbs Observatory (MPC code 750)
  0.6 m "Air Force" telescope (f/5 Alt-Azimuth Newtonian)
  Apogee Alta U55 camera
  Omega Optical Bessell Photometric filters
  60 second exposures

Data analyzed using MPO Canopus 9.3.1.0
  V and R data used to find transforms.
  Modified Hardie method used to determine first 
    order extinction coefficients.
  Observations NOT corrected for asteroid-Earth light travel 
    time.

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   J.D.           Mag.     Err
-------------------------------
2454179.55799   15.072    0.061
2454179.56304   15.092    0.033
2454179.56542   15.079    0.034
2454179.57828   14.911    0.031
2454179.57992   14.911    0.046
2454179.58156   14.859    0.030
2454179.58353   14.838    0.032
2454179.58589   14.817    0.029
2454179.58828   14.783    0.029
2454179.59065   14.752    0.028
2454179.59302   14.735    0.029
2454179.59543   14.689    0.039
2454179.59813   14.673    0.047
2454179.60069   14.640    0.027
2454179.60344   14.644    0.030
2454179.60516   14.642    0.033
2454179.60965   14.632    0.064
2454179.61131   14.626    0.038
2454179.61307   14.605    0.029
2454179.61472   14.594    0.036
2454179.61721   14.624    0.028
2454179.61884   14.652    0.031
2454179.62052   14.640    0.023
2454179.62236   14.648    0.030
2454179.63617   14.768    0.029
2454179.63789   14.785    0.028
2454179.64025   14.837    0.027
2454179.64289   14.848    0.037
2454179.64466   14.901    0.034
2454179.64635   14.912    0.033
2454179.64812   14.920    0.027
2454179.64988   14.940    0.028
2454179.65177   14.964    0.028
2454179.65340   14.982    0.035
2454179.65509   15.001    0.026
2454179.65726   15.017    0.029
2454179.65890   15.072    0.033
2454179.66058   15.052    0.027
2454179.66275   15.078    0.025
2454179.66443   15.065    0.032
2454179.66611   15.096    0.031
2454179.66778   15.096    0.027
2454179.66946   15.089    0.027
2454179.67113   15.090    0.036
2454179.67293   15.064    0.047
2454179.67461   15.071    0.034
2454179.67633   15.080    0.038
2454179.67991   15.054    0.027
2454179.68167   15.067    0.031
2454179.68363   15.001    0.033
2454179.68639   15.015    0.025
2454179.68875   14.996    0.030