what are the names of the two locations where the celestial equator and ecliptic cross
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Ecliptic If the equator is projected outward to the celestial sphere, forming the celestial equator, it crosses the ecliptic at two points known as the equinoxes. The Sun, in its apparent motion along the ecliptic, crosses the celestial equator at these points, one from south to north, the other from north to south.
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The Southern Cross The Southern Cross is notable for containing two bright stars, Acrux and Gacrux, which point the way to the Southern Celestial Pole. The asterism is one of the easiest to identify in the sky and it has significance in a number of cultures in the southern latitudes.
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The Equator Explained Lines of latitude originate at the equator and continue to the North Pole, 90 degrees north, and to the South Pole, 90 degrees south. The other main dividing lines of latitude are the Tropic of Cancer, 23.5 degrees north and Tropic of Capricorn, 23.5 degrees south.
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- The North and South Galactic poles, which are perpendicular to the galactic plane (galactic equator) are labeled NGP and SGP. The NGP lies in the constellation Coma Berenices, which lies 30 north of the ecliptic, above the head of the Virgin. The NGP enters the ecliptic at 5 sidereal Virgo.
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The Equator, the Tropics of Cancer & Capricorn: Association with Earth-Sun Geometry In today's lesson, we're going to talk about a few of the most important parallels we draw on the Earth: the Equator, the Tropic of Cancer and the Tropic of Capricorn. The Equator The Equator is one of the Earth's parallels - it's a line where everywhere on that line has a single latitude.
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Celestial Coordinates On can make a similar coordinate system which is fixed to the sky: Once again, we use the Earth's rotation axis to orient the coordinates. There are two special places, the North and South Celestial Poles. As the Earth rotates (to the East), the celestial sphere appears to rotate (to the West).
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- Equator. In geography, the equator is an imaginary line drawn around a planet, halfway between the poles, where the surface of the roughly spherical planet is parallel to the axis of rotation. The equator divides the surface into the Northern hemisphere and the Southern hemisphere.
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Fall Equinox The equinoxes are not fixed points on the celestial sphere but move westward along the ecliptic, passing through all the constellations of the zodiac in 26,000 years. This motion is called the precession of the equinoxes. The vernal equinox is a reference point in the equatorial coordinate system.
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- Either of the two points on the celestial sphere where the ecliptic (the apparent path of the Sun) crosses the celestial equator. The point at which the Sun's path crosses the celestial equator moving from south to north is called the vernal equinox.
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Nautical & Sailing Terms & Nomenclature The Equator usually refers to the Earth 's equator: an imaginary line on the Earth's surface equidistant from the North Pole and South Pole, dividing the Earth into the Northern Hemisphere and Southern Hemisphere.Other planets and astronomical bodies have equators similarly defined.easons result from the yearly revolution of the Earth around the Sun and the tilt of the Earth's axis relative to the plane of revolution. During the year the northern and southern hemispheres are inclined toward or away from the sun according to Earth's position in its orbit.
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Why is there a 23.5 degree angle between the ecliptic and celestial equator? Because the earth's equator is tilted with respect to the plane of earth's orbit. The celestial equator is the extension of the earth's equator, and the ecliptic is the inte…rsection of the plane of earth's orbit with the apparent 'bowl' of the sky. 2 people found this useful.
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- The two points where the rotation axis meets the surface of the Earth are known as the north pole and the south pole and the great circle perpendicular to the rotation axis and lying half-way between the poles is known as the equator.
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Celestial Equator ~ : An imaginary great circle in the sky drawn concentric to the Earth 's equator. Celestial sphere :- An imaginary sphere centered on the Earth, or arbitrary large radius on the surface of which the stars are considered to be fixed.t's anchored to the celestial poles and the ~ (directly above Earth 's equator). Declination and right ascension are the celestial equivalents of latitude and longitude. Declination-Similar to latitude on the Earth 's surface. The distance in degrees north or south of the ~ (similar to the Earth 's Equator).
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General Astronomy/Print version The imaginary line that divides the world into equal east and west halves, is called the Prime Meridian. Any place to the left of the Prime Meridian is in the Western Hemisphere, while any place to the right of the Prime Meridian is in the Eastern Hemisphere.he equator is exactly half way between the North Pole and South Pole. Each of the seven continents is located in at least two hemispheres. Look at our continent of North America. It lies in the Western Hemisphere and the Northern Hemisphere.
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equinox 2. Either of the two times during a year when the sun crosses the celestial equator and when the length of day and night are approximately equal; the vernal equinox or the autumnal equinox.
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Celestial equator The celestial equator is inclined by 23.4° to the ecliptic plane. The image shows the relations between Earth's axial tilt (or obliquity), rotation axis and plane of orbit. The celestial equator is a great circle on the imaginary celestial sphere, in the same plane as the Earth 's equator.In other words, it is a projection of the terrestrial equator out into space. As a result of the Earth's axial tilt, the celestial equator is inclined by 23.4° with respect to the ecliptic plane.At the poles, though, the celestial equator would be parallel to the horizon.) At all latitudes the celestial equator appears perfectly straight because the observer is only finitely far from the plane of the celestial equator but infinitely far from the celestial equator itself.
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- Also important are ecliptic coordinates. The ecliptic is the line in the sky that corresponds to the Earth’s orbit around the Sun. The planets are always near the ecliptic, in a narrow band called the zodiac.
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Ecliptic Plane At an equinox, the Sun is at one of the two opposite points on the celestial sphere where the celestial equator (i.e. declination 0) and ecliptic intersect.
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- There is one line, the equator, that separates the northern from the southern hemisphere. The Greenwich Meridian and International dateline form a circle that separates the we…stern from the eastern hemisphere. These are the standard hemisphere divisions of the globe, but every meridian circle divides the globe into 2 halves.
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- The equator is the imaginary line halfway between the North and South Poles and i … s at 0° degrees latitude. It divides the Earth into North and South Hemispheres. The Sun appears directly above the Equator at the Autumn and Spring equinox.
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Probably a stupid question? Is the southern cross star constellation only visible from the southern hemisphere Answers. 1  If you were exactly at the north pole (latitude = 90 N), you'd see only stars that are north of the celestial equator. If you were at latitude 45 N, The highest part of the celestial equator in your sky would be 45 degrees above the southern horizon.
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General Astronomy/Print version The equator is an imaginary line running around the widest part of the Earth, halfway between the North Pole and the South Pole. North of the Equator, you're in the Northern Hemisphere.South of the Equator, you're in the Southern Hemisphere. North America, Europe, Africa and Asia are mostly in the Northern Hemisphere.he equator is an imaginary line running around the widest part of the Earth, halfway between the North Pole and the South Pole. North of the Equator, you're in the Northern Hemisphere.
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Circles of Latitude & Longitude - The Equator, The Prime Meridian, The Tropic of Cancer and Capricorn Tropic of Capricorn is another Circle of Latitude currently positioned at 23°26’14” south of the Equator (or -23.4372°). The Southern Tropic is another reference for the Tropic of Capricorn. The Tropic of Capricorn is the parallel at which the Winter (or Southern or December) Solstice occurs when once a year the sun appears directly overhead the most southerly parallel.
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The Dazzle of the Southern Sky The Dazzle of the Southern Sky The Dazzle of the Southern Sky. Stargazing Is Better in the Southern Hemisphere. The Southern Cross, Milky Way and Carina Nebula, viewed from Kenya. São PAULO, Brazil — EARLIER this year, I visited Fernando de Noronha, an island off the northeastern coast of Brazil, only four degrees south of the Equator.
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Fall Equinox The science and significance of the autumnal equinox. is a sure sign of fall. Related Links. In the language of science, an equinox is either of two points on the celestial sphere where the ecliptic and the celestial equator intersect. For the rest of us, it's one of two times a year when the Sun crosses the equator, and the day and night are of approximately equal length.