Vol.4, Part? DECEMBER, 1922 , . Number 25 



BULLETIN 



OF THE 



NATIONAL RESEARCH 

 COUNCIL 



CELESTIAL MECHANICS 



A Survey of the Status of the Determination of the General 

 Perturbations of the Minor Planets 



BY 

 A. 0. LEUSCHNER 



PUBLISHED BY THE NATIONAL RESEARCH COUNCIL 



OP 



THE NATIONAL ACADEMY OP SCIENCES 



WASHINGTON, D. C, 



1922 



