How many degrees will each star appear to move in 3 hours and how many degrees does the sun move in 1 hour of time?
The Earth rotates on its axis once every 24 hours. This results in a star appearing to move 1-degree every 4 minutes to the west. 15-degrees each hour. 15-degrees per hour to the we
The apparent motion of celestial objects across the sky is due to the rotation of the Earth. The Earth completes one full rotation approximately every 24 hours, which causes the stars and other celestial objects to appear to move across the sky.
To calculate how many degrees each star appears to move in 3 hours, you can use the following formula:
Degrees Moved = (360 degrees / 24 hours) * (time in hours)
So, for 3 hours:
Degrees Moved = (360 degrees / 24 hours) * (3 hours) = 45 degrees
Therefore, each star will appear to move approximately 45 degrees across the sky in 3 hours.
Thus, the Sun appears to move approximately 15 degrees across the sky in 1 hour.
Thanks, the sun does move across the sky at 15° per hour along its path across the sky, but when you project the positions straight down to the horizon, you will see that the bearing change with time can be much faster, depending on the height of the sun, which in turn depends on your lat and the time of year. t is earth rotation that makes the sun seem to move across the sky. Since the earth rotates at a constant rate (360 degrees in 24 hours), this equals 15 degrees per hour. Thus the sun seems to advance 15 degrees across the sky each hour. This never changes. The Earth rotates on its axis once every 24 hours. This results in a star appearing to move 1-degree every 4 minutes to the west. 15-degrees each hour. Telescopes that track the stars must be driven at that speed, 15-degrees per hour to the west. So, at some fixed time of night (say, midnight) any given star will be in a given position one day, slightly moved from that position the next day, and so on, returning to the same position 365.25 days later. So, at the same time of night, a star moves its apparent position 360 / 365.25 = 0.99 degrees each day. This motion is due to the Earth's rotation. As the spin of the Earth carries us eastward at almost one thousand miles per hour, we see stars rising in the East, passing overhead, and setting in the West. The Sun, Moon, and planets appear to move across the sky much like the stars. The sun moves about 15 degrees across the sky in an hour. Moving 15 degrees an hour for 24 hours would equal 360 degrees or a full day from sunset to sunset. It takes 24 hours for the Earth to spin once around (360 degrees. In one hour the Earth will spin 360 degrees/ 24 hours = 15 degrees per hour. Therefore the sun will appear to move 15 degrees in one hour. J0927 has the fastest sun-orbiting velocity ever seen, making it capable of racing between New York and Mississippi in under a second, if it were a terrestrial object. At that speed, an object could race around Earth 694 times in just an hour. The sun travels 23.5 degrees to reach its maximum distance from the celestial equator. It does this twice a year, so it travels a total of 47 degrees. Depending on location and date, the Sun may not reach 30 degrees; it could reach 30 degrees once, at local noon, or twice, once before and once after noon. Thus 30° is two hours. The Sun rotates on its axis once in about 27 days. This rotation was first detected by observing the motion of sunspots
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