THE SATELLITES OF SATURN.

----------+--------------------+-------------------------

Name. | Mean Distance from | Periodic Time.

| Centre of Saturn. |

----------+--------------------+-------------------------

| | Days Hrs. Mins. Secs.

Mimas | 118,000 miles. | 0 22 37 27.9

Enceladus | 152,000 ” | 1 8 53 6.7

Tethys | 188,000 ” | 1 21 18 25.7

Dione | 241,000 ” | 2 17 41 8.9

Rhea | 337,000 ” | 4 12 25 10.8

Titan | 781,000 ” | 15 22 41 25.2

Hyperion | 946,000 ” | 21 7 7 40.8

Iapetus | 2,280,000 ” | 79 7 54 40.4

----------+--------------------+-------------------------

A ninth satellite was discovered in August, 1898, by Prof. W. H.

Pickering, but its mean distance and periodic time have not yet been

determined with precision.

Star-land: Being Talks With Young People About the Wonders of the Heavens · 第 117 / 146 题