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14 Cards in this Set
- Front
- Back
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Distance from the Sun resulting from 1 arc second as seen from Earth.
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PARSEC
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Unit of measurement for parallax
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PARSEC
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Number of degrees in a circle
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360
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Number of arc minutes in one degree
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60
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Number of arc seconds in one arc minute
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60
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Two things the angular size depends upon
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ACTUAL SIZE, DISTANCE
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Distance between two points of observation
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BASELINE
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The use of three points to calculate distance
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TRIANGULATION
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Calculating distance using measured baseline and angles
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TRIANGULATION or PARALLAX
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Uses the apparent motion of an object against a background from two viewpoints
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PARALLAX
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As the apparent parallax shift increases, the distance to the object...
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DECREASES
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As the distance to the object increases, the parallax angle...
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DECREASES
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Preferred baseline size
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LARGE
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Typical baseline used in astronomy
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PERIHELION/APHELION or TWO POINTS IN ORBIT
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