References to the Photographic Observations of Pluto


  (The recent astrographic observations of Pluto are referenced in "astgr.refs".)


Cohen,J.C., Hubbard,E.C. and Oesterwinter,C.: 1967, ``New Orbit for Pluto and Analysis
   of Differential Corrections", Astron J, 72, 973-988.

Barbieri,C., Capaccioli,M., Ganz,R., and Pinto,G.: 1972, ``Accurate Positions of the
   Planet Pluto in the Years 1969-1970", Astron J, 77, 521-522.

Barbieri,C., Capaccioli,M., and Pinto,G.: 1975, ``Accurate Positions of the Planet Pluto
   in the Years 1971-1974", Astron J,80, 412-414.

Barbieri,C., Benacchio,L., Capacciloi,M., Pinto,G., and Schoenmaker,A.A.: 1979,
   ``Accurate Positions of the Planet Pluto from 1974 to 1978", Astron J,84, 1890-1893.  

Barbieri,C., Benacchio,L., Capacciloi,M. and Gemmo,A.G.: 1988, ``Accurate Positions    
   of the Planet Pluto from 1979 to 1987", Astron J,96, 396-399.

Carlsberg Meridian Catalogue, La Palma (1: 1984; 2: 1985; 3: 1986; 4: May 1984 to
   February 1988; 5: May 1988 to December 1989; 6: 1990), Copenhagen University 
   Observatory, Royal Greenwich Observatory, Real Instituto y Observatorio de Marina.

Debehogne,H., Machado,L.E., Caldeira,J.F., Vieira,G.G., and Netto,E.R.: 1981, 
   ``Positions of Jupiter, Galilean Satellites and Pluto Obtained in May 1980 with GPO of 
   the ESO, La Silla", Astron Astrophys Suppl Series, 46, 131-134.  

Debehogne,H., de Freitas Mourao,R.R., Nunes,M.R., and Tavares,O.C.: 1984, ``The  
   Positions of Pluto Obtained during the Period May-June 1980: Observations Carried
   Out at the European Southern Observatory (ESO), La Silla", Astron J,89, 1262-1263.

Debehogne,H., de Freitas Mourao,R.R.,: 1988, ``The Positions of Pluto Obtained during  
   February 1985: Observations Carried Out at the European Southern Observatory (ESO), 
   La Silla", Astron J,96, 1479-1481.
   Gemmo,A.G. and Barbieri,C. 1993, Icarus, submitted.

Hardie,R.H., Marcialis,R.L., Wilson,J.W., and Furman,W.R.: 1985, ``Astrometric
   Observations of Pluto: 1965-1981", Astron J,90, 2643.K  

Harrington,R.S. and Walker,R.L.: 1984, ``Positions of Planets and Natural Satellites.  
   II", Astron J,89, 889-898.

Jensen, K.S.: 1979, ``Accurate Astrometric Positions of Pluto, 1975-1978", Astron
   Astrophys Suppl Series, 36, 395-398.

Klemola,A.R. and Harlan,E.A.: 1982, ``Astrometric Observations of the Outer Planets    
   and Minor Planets: 1980-1982", Astron J,87, 1242-1243.

Klemola,A.R. and Harlan,E.A.: 1984, ``Astrometric Observations of the Outer Planets    
   and Minor Planets: 1982-1983", Astron J,89, 879-881.

Klemola,A.R. and Harlan,E.A.: 1986, ``Astrometric Observations of the Outer Planets    
   and Minor Planets: 1984-1985", Astron J,92, 195-198.   

Mink,D.: 1989, private communication.    

Zappala,V., de Sanctis,G., and Ferreri,W.: 1980, ``Astrometric Observations of Pluto   
   from 1973 to 1979", Astron Astrophys Suppl Series, 41, 29-31. 

Zappala,V., de Sanctis,G., and Ferreri,W.: 1983, ``Astrometric Positions of Pluto from 
   1980 to 1982", Astron Astrophys Suppl Series, 51, 385-387.

---------------------------------------------------------------------

Miscellaneous

   1989-95  sent to E M Standish from Alessandra Gemmo, Sep 9, 1993

---------------------------------------------------------------------

US Naval Observatory, Flagstaff

    1995    sent to E M Standish from Alice Monet
  1996-99   sent to E M Standish from R C Stone

---------------------------------------------------------------------
Tokyo Observatory

  1994 :  taken from preprint of paper by Yoshizawa, Soma and Suzuki