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THE HEAVENLY BODIES.
23
Mean Anomalistic Month: period between perigee and perigee (vide infra)
Days. Hrs. Mins. Sees.
27 13 18 37.4
Planets:—Mean Synodic Revolution: period between two successive conjunctions with the sun, and mean zodiacal revolution: period of revolution round the zodiac.
Mean Synodic Revolution. Mean Zodiacal Revolution. Mercury 116 Days[1] 1.0 Years
Venus 584 „ 1.0 „
Mars 780 „ 1.88 „
Jupiter 399 „ 11.86 „
Saturn 348 „ 29.46 „
Precession of Equinoxes: 50.25 seconds of arc in one year; that is, 360 degrees (a revolution among the stars of the zodiac) in 25,800 years nearly.
- ↑ Fractious omitted.
