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Related Flashcards
Cards In This Set
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Constellation
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One of the stellar patterns identified by name, usually of mythological gods, people animals, or objects; the region of the sky containing these stars
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Asterism
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A named group of stars not identified as a constellation, e.g. - the "Big Dipper".
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Magnitude scale
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The astronomical brightness; the larger the number, the fainter the star
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Apparent visual magnitude
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The brightness of a star as seen by human eyes on Earth
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Celestial sphere
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An imaginary sphere of very large radius surrounding the Earth and to which the planets, stars, sun, and moon seem to be attached
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Horizon
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The line that marks the apparent intersection of Earth and sky
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Zenith
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The point on the sky directly overhead
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Nadir
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The point on the bottom of the sky directly under ones feet
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North celestial pole
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The point on the celestial sphere directly above the Earth's North Pole
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South celestial pole
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The point on the celestial sphere directly above the Earth's South Pole
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Celestial equator
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The imaginary line around the sky directly above the Earth's equator
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North point
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The point on the horizon directly below the north celestial pole; exactly north
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South point
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The point on the horizon directly above the south celestial pole; exactly south
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East point
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The point on the eastern horizon exactly halfway between the north point and the south point; exactly east
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West point
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The point on the western horizon exactly halfway between the north point and the south point; exactly west
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