A lunar eclipse occurs at full moon when the Moon crosses the ecliptic in opposition to the Sun. |
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The Moon's Nodes are points in space representing the points where the moon's orbit around the earth crosses the ecliptic. |
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The other planets though also move across the sky on paths close to the ecliptic. |
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Another eight years later the node has moved beyond the ecliptic limit, and no transit can take place. |
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If the Sun is close to one of the nodes when the Moon crosses the ecliptic, an eclipse is imminent. |
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The planets all orbit the Sun in the same direction, with orbital planes inclined slightly to the ecliptic. |
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Abul Wafa determined accurately the obliquity of the ecliptic in 995 A.D. and calculated the variation in the moon's motion. |
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The statue's sky globe, which is 26 inches in diameter, shows 41 Greek constellations, as well as the celestial equator, tropics and ecliptic. |
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The equinoctial colure is a great circle which passes through the celestial poles and the ecliptic at the two equinoxes. |
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The nodical period is the period between two crossings of the ecliptic in the same direction. |
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We get a partial solar eclipse when the Moon's path almost intersects the ecliptic. |
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Generally, it is agreed that such stars need to be low in latitude and near the ecliptic. |
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The dotted black line pointing to the left in the ecliptic is defined to be 0o and is the direction to the vernal equinox. |
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The planes of the planetary orbits are all within a few degrees of the ecliptic, the plane that contains Earth's orbit around the Sun. |
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More simply, let us say that the Earth turns around its axis in the plan of the equator and around the Sun in the plan of the ecliptic. |
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Astronomical instrument. It consists of several parts, which indicate, for example, the stars, the zodiac or the ecliptic. |
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Another important part of the rete is the ecliptic, the circle of the zodiac. |
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At this time of the year the path of the Zodiac, which we non-astrologers call the ecliptic, rises up from the western horizon at a steep angle. |
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All the lunar ecliptic limits are substantially lower than the solar values, and that is why solar eclipses outnumber lunar eclipses by about three to two. |
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An eclipse occurs only if the Moon crosses the ecliptic when very close to either conjunction or opposition, respectively producing solar and lunar eclipses. |
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This apparent solar path over the year, called the ecliptic, is really to do with the tilt of the Earth's axis. |
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He was also able to give greatly improved data for the orbit of Venus, finding better values for the radius of the orbit, its eccentricity and inclination to the ecliptic. |
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Comets in this group, called the Jupiter family comets, revolve around the Sun near the plane of the ecliptic in the same direction as Earth's orbit. |
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The required coincidence of a conjunction with the ecliptic crossing of Venus has some latitude because the solar disc is so much bigger than the image of Venus. |
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Second, and more significant, eclipses do not necessarily occur precisely on the node, but rather there is a range of possible positions called the ecliptic limits. |
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With Kala-kriya Aryabhata turned to astronomy in particular, treating planetary motion along the ecliptic. |
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In the 9th century the Baghdad astronomers observed that the obliquity of the ecliptic had decreased from the value given in Ptolemy's Almagest. |
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The celestial equator intersects another useful great circle, the ecliptic. |
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This latitude corresponds to the northernmost declination of the Sun's ecliptic to the celestial equator. |
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Because of this tilt, the ecliptic and the celestial equator are inclined 23.5 degrees from each other. |
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The path that the Sun traces on the celestial sphere is called the ecliptic. |
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Spring is the vernal equinox — one of two points of intersection between the ecliptic and the celestial equator. |
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Once you have located the sun on the ecliptic, simply align the sun with the eastern horizon and read its position using the almucantars, which are drawn every ten degrees. |
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The vernal and autumnal equinoxes occur when the ecliptic crosses the celestial equator, so linking stars, sun and earth through the passage of time. |
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Lunar eclipses occur at the time of a Full Moon, and when the Moon is near one of the nodes of intersection between its orbit and the ecliptic plane. |
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The plane of ecliptic is the orbital plane of the earth and the other planets in the solar system. |
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When it is rotated, the stars and the ecliptic move over the projection of the coordinates on the tympan. |
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The navigator precisely measures the angle between the moon and the sun, or between the moon and one of several stars near the ecliptic. |
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Angular distance between the two half-great circles of the celestial sphere passing through the ecliptic poles and containing, respectively, the point representing the celestial object and the equinox. |
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These are the two points where the ecliptic crosses the celestial equator. |
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The progression of the Sun along the ecliptic will cause it to be located north of the celestial equator for half the year and south for the other half of the year. |
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View of the Jupiter-trojans in the ecliptic plane. |
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For instance, the fact that the rotational axis of the Earth is tilted with respect to the plane of the ecliptic is most elegantly explained by an impact during our planet's earliest existence. |
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The plane of the Earth's orbit about the Sun is called the ecliptic, and the plane perpendicular to the rotation axis of the Earth is the equatorial plane. |
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