sidereal hour

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sidereal hour

A 24th part of a sidereal day.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

sidereal hour

(Astronomy) a 24th part of a sidereal day

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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Noun

sidereal hour - 1/24 of a sidereal day

sidereal time - measured by the diurnal motion of stars

60 minutes, hour, hr - a period of time equal to 1/24th of a day; "the job will take more than an hour"

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References in periodicals archive ?

Let's take a quick look at the state of the sky portrayed on our current all-sky map, at sidereal hour 10.

Return of the Leo Hour: every sidereal time has its own unique look and feel

Suppose, however, that we wanted to name each sidereal hour and sky scene after the leading constellation freshly risen in the east?

The hour of Orion's rise

Also the period of the modulation based on a fixed absolute motion vector in the Miller direction would not be 12 sidereal hours but 24 as can be plainly seen from the geometry.