of the variable Star in Sobieski's Shield.
135
From all these results it appears, that the disagreements between them are far greater when at its full brightness than at its least; I shall therefore, in summing up the first set, omit two of them, as they evidently differ considerably from the others.
Table IV.
| Rotation from Observations of its full Brightness. |
Rotation from Observations of its least Brightness. |
| Days. | Days. |
| 57 | 49 |
| 69 | 67 |
| 65 | 52 |
| 61— | 67 |
| 67— | 74 |
| 5712 | 50 |
| 57+ | 56 |
| 72 | 56 |
| 65+ | |
| by its full brightness 63+ on a mean. | 6112 |
| 59 | |
| by its least ditto 5934 on a mean. |
A mean of these two means being 6112 days, agrees with the first deductions to 114 day, a coincidence that certainly I could not flatter myself would have happened: yet it must be remembered, that the intervals with considerable perturbations were omitted; for, had they been included, the length of period resulting from its maxima of brightness would have varied much more from that obtained from its minima. I shall now proceed to examine some of its other changes.
