PDS_VERSION_ID   = PDS3                                                       
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID     = "GUNNETAL1998"                                       
  REFERENCE_DESC       = "Gunn, J.E. and 39 coauthors, 1998.  The Sloan       
        Digital Sky Survey photometric camera.  Astron. J. 116, 3040-3081."   
END_OBJECT = REFERENCE                                                        
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID     = "IVEZIKETAL2001"                                     
  REFERENCE_DESC       = "Ivezik, Z. and 30 coauthors, 2001.  Solar system    
        objects observed in the Sloan Digital Sky Survey commissioning data.  
        Astron. J. 122, 2749-2784."                                           
END_OBJECT = REFERENCE                                                        
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID     = "JURICETAL2002"                                      
  REFERENCE_DESC       = "Juric, M., Z. Ivezik, R.H. Lupton, T. Quinn, S.     
        Tabachnik, X. Fan, J.E. Gunn, G.S. Hennessy, G.R. Knapp, J.A. Munn,   
        J.R. Pier, C.M. Rockosi, D.P. Schneider, J. Brinkmann, I. Csabai and  
        M. Fukugita 2002.  Comparison of positions and magnitudes of          
        asteroids observed in the Sloan Digital Sky Survey with those         
        predicted for known asteroids.  Astron. J. 124, 1776-1787."           
END_OBJECT = REFERENCE                                                        
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID     = "LUKAC&MILLER2000"                                   
  REFERENCE_DESC       = "Lukac, M. R., and R. J. Miller. List of Active      
        Professional Observatories. United States Naval Observatory Circular  
        No. 178. Washington DC, 2000.                                         
        "                                                                     
END_OBJECT = REFERENCE                                                        
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID     = "FUKUGITAETAL1996"                                   
  REFERENCE_DESC       = "Fukugita, M., T. Ichigawa, J.E. Gunn, M. Doi, K.    
        Shimasaku, and D.P. Schneider 1996.  The Sloan Digital Sky Survey     
        photometric system.  Astron. J. 111, 1748-1756."                      
END_OBJECT = REFERENCE                                                        
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID     = "STOUGHTONETAL2002"                                  
  REFERENCE_DESC       = "Stoughton, C. and 191 coauthors, 2002.  Sloan       
        Digital Sky Survey:  Early release data.  Astron. J. 123, 485-548."   
END_OBJECT = REFERENCE                                                        
                                                                              
OBJECT     = REFERENCE                                                        
  REFERENCE_KEY_ID     = "PIERETAL2003"                                       
  REFERENCE_DESC       = "Pier, J.R., J.A. Munn, R.B. Hindsley, G.S.          
        Hennessey, S.M. Kent, R.H. Lupton, and Z. Ivezic 2003.  Astrometric   
        calibration of the Sloan Digital Sky Survey.  Astron. J. 125,         
        1559-1579."                                                           
END_OBJECT = REFERENCE                                                        
                                                                              
END