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Table A.1

Triton observation residuals (1847–1942).

k Date Observer Source Type Num RMS1 RMS2
1 1847–1847 802 Lassell (1849a) P,S 4 2.910 1.602
2 1847–1848 802 Hall (1900) P,S 17 2.076 1.043
3 1848–1848 992 Lassell (1849a) P,S 4 2.047 1.490
4 1849–1849 992 Lassell (1849c) P,S 5 4.407 0.858
5 1849–1856 992 Lassell (1849b, 1850, 1851, 1852a,b, 1857) P,S 91 2.288 1.117
6 1863–1863 992 Lassell (1864) P,S 20 1.296 0.468
7 1866–1868 802 Winlock & Pickering (1888) P,S 17 1.740 0.842
8 1873–1874 787 Davis (1874); USNO (1875) P,S 94 1.452 0.341
9 1875–1877 787 USNO (1881); Hall (1876, 1877) P,S 151 1.380 0.395
10 1883–1884 007 Henry et al. (1886) P,S 26 2.070 0.740
11 1883–1888 H80 Young (1888) P,S 65 1.788 0.462
12 1884–1884 007 Henry (1884a,b) P,S 20 1.757 0.885
13 1885–1886 968 Lohse (1887) P,S 3 1.642 0.998
14 1886–1887 020 Perrotin (1887) P,S 27 0.775 0.308
15 1889–1891 780 Parrish & Stone (1892) P,S 18 2.020 0.915
16 1892–1895 662 Barnard (1893, 1894, 1895) P,S 320 0.943 0.357
17 1894–1897 662 Schaeberle (1895, 1897, 1898) P,S 133 0.566 0.174
18 1894–1906 786 USNO (1911) P,S 384 1.018 0.305
19 1896–1898 690 Drew (1897, 1899) P,S 121 1.492 0.381
20 1896–1898 000 Greenwich, Royal Observatory (1900) P,S 23 1.580 0.622
21 1897–1899 754 Barnard (1898, 1899) P,S 326 0.921 0.259
22 1898–1902 662 Aitken (1899, 1904); Hussey (1899, 1902) P,S 91 1.037 0.295
23 1899–1899 000 Greenwich, Royal Observatory (1899) P,S 12 0.962 0.348
24 1899–1901 754 Barnard (1901) P,S 357 0.824 0.227
25 1899–1901 084 Kostinsky (1900, 1902) P,S 21 1.277 0.363
26 1899–1907 000 Christie (1901, 1904, 1909) P,S 60 0.992 0.240
27 1899–1908 786 See (1900); Hammond & Rice (1905); P,S 269 1.205 0.332
Hammond (1906, 1908); Dinwiddie (1903)
28 1899–1920 084 Balanovskiĭ (1923) P,S 98 1.186 0.386
29 1901–1903 754 Barnard (1903) P,S 223 0.769 0.338
30 1902–1902 662 Perrine (1903) P,S 51 1.386 0.210
31 1902–1908 000 Greenwich, Royal Observatory (1903, 1904, 1905) P,S 294 0.970 0.243
Greenwich, Royal Observatory (1906, 1907, 1908)
32 1903–1905 522 Wirtz (1905) P,S 13 3.038 0.577
33 1903–1922 754 Barnard (1906a, 1907, 1909, 1910, 1912, 1913) P,S 972 0.952 0.280
Barnard (1915, 1916, 1917, 1919, 1927)
34 1905–1905 662 Albrecht & Smitil (1909) P,S 6 1.127 0.417
35 1905–1906 754 Barnard (1906b) P,S 32 1.027 0.378
36 1908–1911 786 Hall (1911); Hall & Burton (1913) P,S 136 1.117 0.350
37 1909–1910 000 Greenwich, Royal Observatory (1913) P,S 59 0.682 0.176
38 1911–1912 786 Burton (1913) P,S 85 0.739 0.223
39 1912–1919 786 Hall & Burton (1919) P,S 282 1.083 0.338
40 1919–1923 786 Hall (1920); Bower & Hall (1923) P,S 84 0.943 0.348
41 1920–1921 786 Hall (1922) P,S 46 0.999 0.399
42 1923–1923 084 Neuĭmin & Pokrovskiĭ (1926) P,S 118 1.327 0.399
43 1928–1928 662 Crawford (1928) P,S 15 0.948 0.243
44 1939–1942 077 Alden (1940, 1943) P,S 73 0.349 0.091

Notes. The unit of the residuals for type P is degree, and for other types is arcsecond.

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