THE ORBIT OF NEPTUNE. 



Geocentric Apparent Longitudes and Latitudes of Neptune derived 





FROM Observation. 







• 



Longitude. 





Latitude. 





Date. 







Error of 

 Theory. 







Error of 

 Theory. 



Observation. 



Theory. 



Observation. 



Theory. 



1795, May 9, 



O t II 



214 37 20.4 



II 

 19.1 



— 1.3 



+ 1 50 33.3 



34.4 



+ 1.1 



1846, Oct. 14, 

 Nov. 14, 



825 81 35.0 

 325 23 24.2 



34.9 

 28.2 



— 0.1 



— 1.0 



— 31 55.8 

 31 43.5 



56.0 

 44.0 



— 0.2 



— 0.5 



1847, July 26, 

 Aug. 17, 

 Oct. 8, 

 Nov. 18, 



329 41 22.9 

 829 7 18.9 

 327 52 10.4 

 327 86 56.9 



22.0 

 18.8 

 10.4 

 56.3 



— 0.9 



— 0.6 

 0.0 



— 0.6 



35 24.1 

 35 45.7 

 35 57.6 

 35 88.3 



25.9 

 47.7 



58.8 

 88.6 



— 1.8 



— 2.0 



— 1.2 



— 0.3 



1848, July 25, 

 Aug. 29, 

 Oct. 6, 

 Nov. 17, 



331 59 6.7 

 331 3 16.6 



330 8 55.3 

 329 59 22.8 



5.0 

 15.8 

 55.3 

 22.4 



— 1.7 



— 0.8 

 0.0 



— 0.4 



39 21.8 

 39 54.0 

 89 56.8 

 89 32.8 



22.8 

 55.2 

 57.8 

 32.8 



— 1.0 



— 1.2 



— 1.0 



— 0.5 



1849, Sept. 1, 



Oct. 15, 



^ Nov. 25, 



333 15 88.7 

 332 15 82.6 

 332 4 17.1 



38.6 

 32.4 

 16.7 



— 0.1 



— 0.2 



— 0.4 



43 51.8 

 43 48.6 

 48 15.7 



52.7 

 49.2 

 17.1 



— 0.9 



— 0.6 



— 1.4 



1850, Aug. 28, 

 Oct. 15, 

 Nov. 20, 



335 39 38.5 

 334 31 10.3 

 334 15 24.4 



88.5 



9.5 



28.8 



0.0 



— 0.8 



— 0.6 



47 41.9 

 47 39.9 

 47 8.6 



42.7 



41.1 



9.5 



— 0.8 



— 1.2 



— 0.9 



1851, Sept. 2, 

 Oct. 14, 

 Nov. 20, 



337-48 58.5 

 336 48 12.7 

 336 28 32.5 



58.1 

 10.9 

 31.9 



— 0.4 



— 1.8 



— 0.6 



51 32.6 

 51 30.0 

 50 53.3 



33.7 

 30.0 

 54.1 



— 1.1 

 0.0 



— 0.8 



1852, Aug. 7, 

 Sept. 5, 

 Oct. 12, 

 Nov. 28, 



340 46 10.7 

 340 11.1 

 339 5 43.2 

 338 43 24.0 



11.0 

 10.3 

 43.0 

 23.4 



+ 0.3 



— 0.8 



— 0.2 



— 0.6 



54 49.8 

 55 18.8 

 55 14.6 

 54 23.4 



51.6 

 19.5 

 14.8 

 23.8 



— 1.8 



— 0.7 



— 0.2 

 + 0.1 



1853, Sept. 1, 

 Oct. 15, 



Nov. 24, 



342 24 48.0 

 341 19 0.8 

 840 56 4.3 



47.7 

 0.2 

 3.0 



— 0.8 • 



— 0.6 



— 1.8 



58 54.1 

 58 52.0 

 58 4.5 



55.9 



52.4 



4.7 



— 1.8 



— 0.4 



— 0.2 



1854, Aug. 30, 

 Sejjt. 24, 

 Oct. 27, 

 Dec. 5, 



344 46 18.1 

 344 5 33.4 

 348 23 17.5 

 843 12 3.1 



17.8 

 33.2 

 17.8 



2.8 



— 0.8 



— 0.2 



— 0.2 



— 0.3 



1 2 25.8 

 1 2 85.8 

 1 2 14.4 

 1 1 19.4 



27.5 

 87.0 

 15.3 

 19.1 



— 1.7 



— 1.2 



— 0.9 

 + 0.3 



1855, Aug. 10, 

 Sept. 8, 

 Oct. 22, 

 Nov. 29, 



347 34 55.1 

 346 49 57.9 

 845 45 7.4 

 845 24 25.6 



54.2 



57.0 



6.2 



25.3 



— 0.9 



— 0.9 



— 1.2 



— 0.3 



1 5 26.8 

 1 6 1.4 

 1 5 50.2 

 1 4 53.7 



28.0 



L8 



50.1 



54.8 



— 1.2 



— 0.4 

 + 0.1 



— 1.1 



