42 



THE ORBIT OP NEPTUNE. 



Heliocentric co-ordinates of Neptune, re 



f erred to the mean equinox of date, \ 





for each 180i'7i day, Greenwich mean noon. 





Date. 



Longitude. 



Latitude. 



logr. 



1795, 



May 9, 



o / // 



215 5 20.12 



( // 



+ 1 47 59.80 • 



1.4817427 



1846, 



Jan. 21, 



325 28 41.54 



— 28 26.90 



1.4774075 





July 20, 



326 33 58.15 



30 23.48 



3215 



1847, 



Jan. 16, 



327 39 13.82 



32 19.44 



2356 





July 15, 



328 44 28.74 



34 14.63 



1510 



1848, 



Jan. 11, 



329 49 43.21 



36 9.15 



1.4770685 





July 9, 



330 54 57.50 



— 38 2.92 



1.4769892 



1849, 



Jan. 5, 



332 11.98 



39 55.91 



9135 





July 4, 



333 5 27.14 



41 48.06 



8420 





Dec. 31, 



334 10 43.37 



43 39.37 



7742 



^ 1850, 



June 29, 



335 16 1.07 



45 29.78 



7104 





Dec. 26, 



336 21 20.50 



— 47 19.25 



6503 



1851, 



June 24, 



337 26 42.10 



49 7.76 



5935 





Dec. 21, 



338 32 6.10 



50 55.27 



5396 



1852, 



June 18, 



339 37 32.77 



52 41.71 



4880 





Dec. 15, 



340 43 2.18 



54 27.04 



4383 



1853, 



June 13, 



341 48 34.62 



— 56 11.23 



3895 





Dec. 10, 



342 54 10.02 



57 54.26 



3405 



1854, 



June 8, 



343 59 48.28 



59 36.04 



2907 





Dec. 5, 



345 5 29.19 



1 1 16.58 



2395 



1855, 



June 3, 



346 11 12.34 



1 2 55.79 



1856 





Nov. 30, 



347 16 57.47 



— 1 4 33.67 



1281 



1856, 



May 28, 



348 22 43.95 



1 6 10.17 



0671 





Nov. 24, 



349 28 31.22 



1 7 45.23 



1.4760028 



1857, 



May 23, 



350 34 18.63 



1 9 18.83 



1.4759357 





Nov. 19, 



351 40 5.78 



1 10 50.93 



8652 



1858, 



May 18, 



352 45 52.17 



— 1 12 21.48 



7918 





Nov. 14, 



353 51 37.46 



1 13 50.50 



7185 



1859, 



May 13, 



354 57 21.65 



1 15 17.89 



6454 





Nov. 9, 



356 3 4.60 



1 16 43.65 



5739 



1860, 



May 7, 



357 8 46.65 



1 18 7.79 



5049 





Nov. 3, 



358 14 27.84 



— 1 19 30.24 



4394 



1861, 



May 2, 



359 20 8.66 



1 20 50.95 



3779 





Oct. 29, 



25 49.45 



1 22 9.96 



3210 



1862, 



April 27, 



1 31 30.52 



1 23 27.19 



2691 





Oct. 24, 



2 37 12.30 



1 24 42.64 



2220 



1863, 



April 22, 



3 42 55.16 



— 1 25 56.24 



1797 





Oct. 19, 



4 48 39.57 



1 27 7.97 



1423 



1864, 



April 16, 



5 54 25.74 



1 28 17.84 



1093 





Oct. 13, 



7 14.10 



1 29 25.77 



0801 



1865, 



April 11, 



8 6 4.93 



— 1 30 31.79 



1.4750547 



