Recent content by MarkB7

This is really all that I wanted to come to in this thread: how many arcseconds the sun travels in one year from the reference point of a person standing on one spot of the solid Earth. Tropical Year: 473040000 arcseconds Tropical Day: 1296000 arcseconds I want to be sure about this, so...

You are correct. That would be a lot of difference. I assume you mean 360 degrees per day from the reference frame of standing on one spot of the Earth. Every day, from my reference frame, the sun circles me 360 degrees. So, can we say the sun travels 473040000 arcseconds every year from...

Thank you for responding to my question! 3,600 arcseconds per day? I think it's 1296000 arcseconds per day. So then it would be, approximately, 1296000 x 365? Mark

Ummm. Assume we are standing on the Earth and looking up...all year.

Hi DH, Thank you! I'm sure you're a nice person : ) So, by tropical year I mean the amount of arcseconds the sun travels from the spot over the vernal equinox to that same spot over the vernal equinox the next year. Of course it doesn't travel, so, apparent travel. Mark : )

Hi DH, I think you misunderstand my intention here. I simply want to find out how many arcseconds the Sun travels through the sky in one year. You are the one continuing the conversation from the closed thread. Mark

Hi D H, I'm not resurrecting that thread. I just hope we can come to a consensus on the number. I mean all the travel of the sun in a year. So it's got to be a lot. Mark

Hi Everyone, I have a simple question: How many arcseconds does the sun "travel" through the sky in one Tropical Year? Mark

We shall see : ) I want to highlight blkqi's post because it is illustrious of the issue. Blkqi came up with 20 minutes for his answer. He measured the orbital circumference of the earth. But 50 arcseconds should not represent 50 arcseconds of the orbital cricumference, it represents 50...

Yes. And the sun comes back to the same position after one tropical year. It takes an additional 50 arcseconds(at the half year it would be 25 arcseconds) to line up with the same background stars. 50 arcseconds is 3.3 seconds of real time. It's just what it is. You can't dispute that. Why...

Very good discussion. This is confusing. .0137 degrees is 50 arcseconds. The sky never takes more or less than 3.3 real time seconds to travel 50 arcseconds. Likewise, the sky never takes more or less than about 20 minutes to travel 5 full degrees. The sun "moves" in the sky 5 degrees...

Perhaps the most important thing to realize is that the spinning of the Earth is a different action than the movement of precession. 20 minutes(1200 seconds of precession) distributed over every day of the year means 3.3 seconds(1200/365) of real time every single day. Likewise it means 50...

DH, 50 arcseconds of displacement between the sun and the background stars occurs every year. Only 50 arcseconds. Observable by anyone who takes the time. 50 arcseconds is 3.3 seconds of real time. Try to imagine the Earth going around the sun without rotating , but still precessing the same...

I'm asking that we be honest with ourselves and with the facts, rather than relying on a number that someone else came up with. If we say, 'you're disputing known facts', then we're not being honest with ourselves. Look at the actual facts and you will see something different. It's too easy to...

Let's do some rough calculations to find out how many degrees there are in a year. 365 days in a year x each day has 360 degrees of celestial sky passing over = Each tropical year has 131400 degrees of celestial sky coverage which equals 7884000 arcminutes which equals 473040000 arcseconds. In...