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Re: A noon sight conundrum
From: Peter Fogg
Date: 2003 Dec 2, 11:01 +1100
From: Peter Fogg
Date: 2003 Dec 2, 11:01 +1100
> > 3) In your learned opinion what was the time of meridian passage on that day > > at long 132d 40' E. > > > > 3:15:39 GMT Earlier I had found a slightly different time. On checking I found that I had used the data from 2003 instead of the year before, which prompted the question : what changes the sun's position slightly year to year? One possible answer is that our convention of adding a day every 4 years doesn't exactly account for the time it takes the earth to orbit the sun. Are there others? Another thing I noticed is that on the day in question, Sat 20 Jul 2002, the v correction is zero, and that with the sun it never becomes a big figure, unlike the moon, for example. I guess that all of this is fairly elementary astronomy - would anyone like to have a go at shedding some light?
