What is the apparent daily motion, in degrees per hour, of the constellation Cancer?

All stars and constellations appear to move at the same rate, around the earth. That is, they go all the way around in 24 hours. They complete 15 degrees of their OWN circles in an hour. But these are not degrees of a fixed angular size from our point of view. The measurement is right ascension, which is in hours and minutes.



If you're just talking about angular degrees, that would depend on the latitude. Cancer is at the northernmost extreme of the ecliptic. If it was right on the equatorial, the question would be easy to answer. It would move 15 degrees every hour. And only on the equinox and only at the equator. Or it would move the same amount per hour on the summer solstice at the Tropic of Cancer. So Cancer, being 23.5 degrees away from the equatorial, would be a little slower, most of the time. This time of year, it's pretty close to 15 degrees an hour unless you are at a very high latitude.



That is why we use right ascension and declination. That applies to all stars, regardless of latitude or time of year.What is the apparent daily motion, in degrees per hour, of the constellation Cancer?Due to earths Motion around sun constellations change at a rate of one degree per 4minute

That is 15degrees per hourWhat is the apparent daily motion, in degrees per hour, of the constellation Cancer?24 hrs in day.......360 degrees= one rotation.....360 divided by 24 = 15.....15 degrees per hour

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