Mercury's orbit is highly eccentric (e = 0.2056). November (Ascending Node 3) = 63 = 67.0 % These events can be organized into two groups: If the Mercury is passing between the Earth and Sun at that time, a transit will be seen.ĭuring the seven century period 1601 CE to 2300 CE 1, Earth experiences 94 transits of Mercury across the Sun. In the case of Mercury, there are on average thirteen transits each century.Ī transit of Mercury occurs only if the planet is in inferior conjunction with the Sun (between Earth and Sun) and is also crossing the through Earth's orbital plane (the Ecliptic).ĭuring the present period in Earth's history, Mercury's orbit crosses Earth's orbital plane in early May and early November each year. Transits are very rare astronomical events. Lie inside Earth's orbit, so they are the only planets which can pass between Earth and Sun to produce a transit. Seven Century Catalog of Mercury Transits: 1601 CE to 2300 CEĪ transit is the passage of a planet across the Sun's bright disk.Īt this time, the planet can be seen as a small black disk slowly moving in front of the Sun.
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