Page:Gods Glory in the Heavens.djvu/377

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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″
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