The Sun makes one complete circuit of the ecliptic in 365.24 days, so its average angular velocity is 0.99° per day.Īt this rate, it takes 34.5 days for the Sun to cross the 34° wide eclipse zone centered on each node.īecause the Moon's orbit with respect to the Sun has a mean duration of 29.53 days, there will always be one and possibly two If New Moon takes place within about 17° of a node, then a solar eclipse will be visible from some location The orbit of the Moon around Earth is inclined about 5.1° to Earth's orbit around the Sun.Īs a consequence, the Moon's orbit crosses the ecliptic at two points or nodes.
Periodicity of Solar Eclipses Fred Espenak, NASA's GSFC Indexġ.2 Interval Between Two Successive Solar Eclipsesġ.10 Secular Variations in the Saros and Inex
0 kommentar(er)
