1014 
a= 0.00488 — 0 .0000142 7 
P= -+ 0°.01465 — 0°.0000266 7 
Q= + 0.01256 — 0 .0000101 7. 
The values of p’ and q’ can be derived at once from Gurnnick’s 
final results. | have reduced the results for the different satellites to 
one and the same epoch for each of the three series, for which the 
epoch of satellite II was chosen. The corrections to be applied to 
the other satellites on this account are very small and only in one 
or two cases affected the fourth decimal place. I thus found: 
| : | o ° o o o ; o I 6 i" o 
|1907.183 | +-0.0451—0.0086 | —0.4478+0.1260 | —0.0058 - 0.1286 +0. 184640. 2943 | 
1908 .235 | + 0149— 0203 | — 4065+ 2152| — 0278— 1308|+ 1884+ 2897 
| 
1909.265| — 0151— 0433|— 3644+ 3038 — 0428— 1300|4+ 1828+ za 
EN 
These must now be transformed to my fundamental plane by the 
equations (1). We find: 
| iy a fo} = a jj 7 Eer = : 5 o o 
1907 | +0.0596 +-0.0041 \ —0.4338--0. 1366 | +0.0093—0.1161 |+0.1978}-0.3076 
1908 | + 0204— 0077 | — 30304 2260 | — 0128- 1184 |+ 2016+ 3030, 
1909 | — o011— 0300 | — 3513+ 3148 | — 0218— 1177 + 1960 
| 
These are thus mean elements as derived from the observations 
for the respective mean epochs. In comparing them with the theory 
we must therefore leave out of account those theoretical terms, of 
which the period is short compared with the periods covered by 
the observations ef each series. These latter periods are 191, 197 
and 105 days in the three cases. Such terms, however, do not exist. 
Beyond the so called ‘‘secular’ terms, there are terms with periods 
in the neighbourhood of 6 years, and some small terms with a 
period of about 248 days. All these have been taken into account *). 
1 then find the following theoretical values: 
1) Gurunick only takes account of the “secular” terms and rejects the others, 
which he calls “kurzperiodisch”’. 
