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Table 3

Mean (ν) and standard deviation (σ) on separation s and position angle p (multiplied by the separation) in seconds of degrees for each satellite.

Observations νs σs νp σp N   Satellite
(′′) (′′) (′′) (′′)
Morley (1989), Hall-Newcomb-Harkness −0.0130 0.6717 0.0964 0.5627 112, 110 Phobos
US Naval Obs., Washington (before 1893) 0.2381 0.6856 0.0141 0.5803 147, 155 Deimos
Keeler (1888), Keeler (1890) −0.1450 0.3827 0.2262 0.2840 59, 103 Phobos
Lick Observatory 1888, 1890 0.1310 0.6332 0.0200 0.5633 33, 46 Deimos
Campbell (1892), Campbell (1895) 0.0363 0.2243 0.0375 0.4388 380, 111 Phobos
Lick Observatory 1892, 1894 0.0083 0.3244 −0.0739 0.4133 305, 127 Deimos
Barnard (1897), Barnard (1910) −0.0480 0.4101 −0.2146 0.3935 63, 50 Phobos
Lick 1894, Yerkes 1909 0.3599 0.3210 −0.0338 0.4927 18, 12 Deimos
Morley (1989), Telescope:26−inch −0.2101 0.3323 −0.0299 0.3433 24, 42 Phobos
US Naval Obs., Washington (since 1893) 0.0996 0.5336 0.0035 0.4300 52, 53 Deimos
Newall (1895) −0.1343 0.4268 0.0240 0.7057 30, 3 Phobos
Cambridge 1894 0.0000 0.0000 0.0000 0.0000 0, 0 Deimos
Hall (1913) 0.0426 0.4480 0.0387 0.2039 76, 79 Phobos
USNO 1909 0.0006 0.3957 0.0306 0.3637 85, 85 Deimos
Jeffers (1925) 0.0388 0.3907 0.0561 0.3054 41, 32 Phobos
Lick 1924 0.1918 0.3629 −0.0064 0.2670 27, 21 Deimos
Burton & Hall (1923) 0.0391 0.3168 0.1281 0.1972 37, 38 Phobos
USNO 1911-1922 0.0498 0.2226 −0.0176 0.2165 50, 50 Deimos

Notes. N is the number of observations by satellite (one number per coordinate). The year appearing next to each observatory name corresponds to the observed Mars opposition.

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