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Astronomy
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Hour Angle and Local Sidereal Time
Grade Level
Astronomy
AST.056 Hour Angle and Local Sidereal Time
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A review question card needs the normalized signed hour angle for Target E20, whose RA is 17h 00m, at LST 17h 00m. Which choice is correct? Use positive HA for west of the meridian, negative HA for east, and 00h 00m for on the meridian.
A
Target E20: HA = +01h 00m; object is west of the meridian
B
Target E20: HA = 00h 00m; object is on the meridian
C
Target E20: HA = -01h 00m; object is east of the meridian
D
Target E20: HA = +12h 00m; object is west of the meridian
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