![]() ![]() Parsec was a very cool video game that I played long, long ago on my TI 94A computer.Įxcellent info. Wonderful stuff, mathematics-I even still remember some of it after more than fifty years since graduation. Yes, indeedy, after all the mathematical fooling around to prove that we really knew trigonometry, it came out to exactly 3.26 light years. The definition of a parsec was: "That distance at which the diameter of the Earth subtends one second of arc" When I was a freshman, we were required in physics to determine the value of a parsec. Is the parsec a relative vector which is adapted to a conventional parameter?Ī comment on Hank's definition of parsec:Ī parsec is the distance at which the diameter of the Earth's orbit, (not of the Earth itself as Hank mistakenly writes) subtends an angle of 1 arc second. This is equivalent to about 30.857×1012 km, or about 206,000 aus, and is itself defined in terms of the au as the distance at which one Astronomical Unit. If youd like to perform a different conversion, just select between the listed Length units in the Select between other Length units tab below or use the search bar above. For an understanding of the conversion process, we include step by step and direct conversion formulas. I read a book at one time, about 20 years ago, which presented a figure of 63,000 miles as the distance of a parsec.(at least I think that was the statement it was 63 followed by zeros). You can enter a value in either the parsecs or astronomical unit input fields. ![]() I always wondered what a parsec was! Thanks, very interesting! ![]() October 30, anon29051: You have also mistakenly written the definition.Ī parsec is the distance at which one astronomical unit (roughly, the radius, not the diameter) of the Earth's orbit, subtends an angle of 1 arc second.Īpril 12, anon16328. The answer for vctrphsr is a parsec is approx 31 trillion km as stated in the article and for your comment about relative vector: no. ![]()
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