![]() ![]() 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. The light-year (ly) and parsec (pc) are units used by astronomers to measure large distances in space. The nautical mile (nm) is used for maritime and air navigation. Yes, indeedy, after all the mathematical fooling around to prove that we really knew trigonometry, it came out to exactly 3.26 light years. In the customary or English system, common length units are the inch (in.), foot (ft.), yard (yd.), and mile (mi.). 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. a The parsec unit is obtained by the use of parallax and trigonometry, and is. 30.9 trillion kilometres (19.2 trillion miles ). 30.9 trillion kilometres (19.2 trillion miles ). The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to 3.26 light-years or 206,265 astronomical units (au), i.e. 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. The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to 3.26 light-years or 206,265 astronomical units (au), i.e. ![]() 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). To convert all types of measurement units, you can used this tool which. For distances on galactic and intergalactic scales, kiloparsec (kpc). I always wondered what a parsec was! Thanks, very interesting! In other words, 1 parsec is 1.90939487090493E+51 times bigger than a planck length. One parsec equals 3.2616 light years, 206 265 astronomical units, or 30.857 × 1012 km. 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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