SYNOPTICAL TABLES.
341
| Eclipses, length of Earth's shadow (distance of moon = 1), | 3.5 |
| Eclipses, period of recurrence in same order and magnitude in years, | 18-6 |
| Eclipses, total number in period (29 lunar, 41 solar), about | 70 |
| Mean distance from the Earth (Earth's radius = 1), | 60.2734 |
| Mean distance from the Earth in miles | 237,000 |
| Period, in days, of rotation, | 27.3215824 |
| Period, in days, revolution, mean tropical, | 27.3215824 |
| Period, in days, revolution, mean sidereal, | 27.321661 |
| Period, in days, revolution, mean synodical, | 29.530588 |
| Period, in days, revolution, mean anomalistic, | 27h. 18m. 37s. |
| Period, in days, mean revolution of node, | 6793.39108 |
| Period, in days, mean revolution of apsides. | 3232.575343 |
| Motion eastwards of line of apsides in each lunation. | 3° |
| Mean longitude of Moon, | 118° 17′ 8″ |
| Mean longitude node, | 13° 53′ 17″.7 |
| Mean longitude perigee | 266° 10′ 7″.5 |
| Mean inclination of orbit to ecliptic, | 5° 8′ 47″.9 |
| Mean inclination maximum variation. | 5° 8′ 47″.1 |
| Eccentricity of orbit (semi-axis major = 1), | 0.0549080 |
| Inclination of axis to ecliptic, | 1° 30′ 10″.8 |
| Mean motion in a solar day, | 13° 10′ 35″ |
| Maximum variation, | 35′ 42″ |
| Maximum annual equation, | 11′ 11″.97 |
| Maximum equation of centre, | 6° 17′ 12″ |
| Horizontal parallax, maximum, | 1° 1′ 24″ |
| Horizontal parallax mean, | 57′ 0″.9 |
| Horizontal parallax minimum, | 53′ 48″ |
