Finding the Hour Angle between 8:00 and 9:00

Thread starter vselvar2
Start date Feb 20, 2011
Tags

Angle

In summary, an hour angle is a measure of the angular distance between a specific point on the celestial sphere and the observer's meridian line. It is calculated by multiplying the time elapsed since a specific point in time by 15 degrees, as the Earth rotates 15 degrees per hour. Finding the hour angle between two specific times helps determine the position of celestial objects. This calculation is important in astronomy and navigation for determining the position of objects in relation to the observer's location on Earth. The hour angle can be affected by factors such as the observer's location, time of day, and the position of the celestial object in the sky.

Feb 20, 2011

vselvar2

Hey guys,

How do I find the hour angle between 8:00 and 9:00?

Physics news on Phys.org

Feb 20, 2011

PhaseShifter

On a sundial, or a clock face?

Feb 20, 2011

cepheid

Staff Emeritus

Science Advisor

Gold Member

http://en.wikipedia.org/wiki/Hour_angle

What is an hour angle?

An hour angle is a measure of the angular distance between a specific point on the celestial sphere and the observer's meridian line. It is often used in astronomy and navigation to determine the position of celestial objects in relation to the Earth.

How is the hour angle calculated?

The hour angle is typically calculated by multiplying the time elapsed since a specific point in time (usually noon or midnight) by 15 degrees, as the Earth rotates 15 degrees per hour.

What does it mean to find the hour angle between 8:00 and 9:00?

Finding the hour angle between 8:00 and 9:00 means determining the angular distance between the observer's meridian line and a specific point on the celestial sphere at 8:00 and 9:00, respectively. This can help determine the position of the celestial object at those times.

Why is finding the hour angle important?

Finding the hour angle is important in astronomy and navigation as it allows for the determination of the position of celestial objects in relation to the observer's location on Earth. It is also used in timekeeping and determining the Earth's rotation.

What factors can affect the hour angle?

The hour angle can be affected by the observer's location on Earth, the time of day, and the position of the celestial object in the sky. The Earth's rotation and any movement of the observer can also impact the hour angle.