Wiki User
∙ 10y agoThe idea is to divide the number of degrees in a complete circle (360 degrees) by the number of hours the Moon takes for those 360 degrees, i.e., one complete revolution. One revolution by the Moon takes about 27 1/2 days; convert that into hours and do the division.
Wiki User
∙ 10y agoThe rate of movement for the moon in degrees of azimuth per hour varies depending on its position in the sky and the time of year. On average, the moon moves about 15 degrees per hour in its orbit around the Earth. However, this rate can change as the moon's orbit is not a perfect circle.
The azimuth is the compass direction, measured clockwise from true north, and the altitude is the angle above the horizon. Given the latitude of 20 degrees north, right ascension of 11 hours, and declination of -10 degrees, you would need to calculate these values using spherical trigonometry or an astronomical calculator to determine the exact azimuth and altitude.
A star at the celestial equator will move 15 degrees in altitude per hour, and 15 arcseconds in 1 second of time. This is because the celestial equator intersects the celestial sphere at 90 degrees from the north and south celestial poles, so the stars appear to move in circles around the celestial poles.
One day is 24 hours, so the apparent movement of the Sun is one full circle - or 360 degrees - every 24 hours. That is equivalent to 15 degrees per hour. That's the speed of the Sun as perceived from Earth - and such an apparent movement of an object in thesky has to be expressed in angular measurement (such as degrees or radians), not in meters/second, kilometers/hour, etc. Also, this apparent speed is the same at different latitudes. Actually, it can be slightly less when the Sun is not at the equinox, since then, the Sun doesn't describe a major circle from our point of view. But the difference is not great.
For every 15 degrees of longitude traveled eastwards, there is typically a time difference of one hour ahead. This is due to the Earth's rotation at 15 degrees per hour.
1 day = 1 360 degree rotation and that is also 24 hours, so the shift per hour is 360/24 = 15 degrees /hour
The azimuth is the compass direction, measured clockwise from true north, and the altitude is the angle above the horizon. Given the latitude of 20 degrees north, right ascension of 11 hours, and declination of -10 degrees, you would need to calculate these values using spherical trigonometry or an astronomical calculator to determine the exact azimuth and altitude.
360 degrees
It takes twelve hours for the hour hand to move 360 degrees In half an hour the hour hand moves 15 degrees
15 Degrees per hour
The angle between the hour hand and the minute hand on a standard clock at 6:30 is 15 degrees. Let's review the movement of the hands of the clock specific to this problem. The hour hand moves through the 12 hours of half a day in 12 hours (naturally), and that translates into the hour hand moving 360 degrees in 12 hours. That means the hour hand moves 360/12, or 30 degrees per hour. That translates into 15 degrees in half an hour. If the hour hand is pointing straight down at 6:00 (which it is), it will move 15 degrees from where it was in half and hour. And the time will be 6:30 with the minute hand pointing straight down. The minute hand will be pointing to where the hour hand was half an hour ago. And, as stated, the hour hand will have moved from dead on the six and gone 15 degrees further around.
The hour hand on a standard 12 hour clock rotates one twelth of 360 degrees in one hour. That is 30 degrees.
A star at the celestial equator will move 15 degrees in altitude per hour, and 15 arcseconds in 1 second of time. This is because the celestial equator intersects the celestial sphere at 90 degrees from the north and south celestial poles, so the stars appear to move in circles around the celestial poles.
23/24 of 720 degrees = 690 degrees
The calculation is an hour for every 15 degrees you are away from the Greenwich meridian . You need to know your longitude , then do the calculation . Remember to do plus or minus depending if you are East or West....... eg. if you are in mid Atlantic somewhere , say 45 degrees West .....its minus three hours..
One day is 24 hours, so the apparent movement of the Sun is one full circle - or 360 degrees - every 24 hours. That is equivalent to 15 degrees per hour. That's the speed of the Sun as perceived from Earth - and such an apparent movement of an object in thesky has to be expressed in angular measurement (such as degrees or radians), not in meters/second, kilometers/hour, etc. Also, this apparent speed is the same at different latitudes. Actually, it can be slightly less when the Sun is not at the equinox, since then, the Sun doesn't describe a major circle from our point of view. But the difference is not great.
The angular speed of the hour hand is 30 degrees per hour because the hour hand completes a full rotation of 360 degrees in 12 hours. Therefore, 360 degrees divided by 12 hours is equal to 30 degrees per hour.
One hour equals 15 degrees.