i need the mathmathic formulas.
2007-07-24 07:07:43 · 8 answers · asked by farzane l 2 in Science & Mathematics ➔ Astronomy & Space
NOOOOOOOO.NOW BEAT IT!!!!!!!!Sorry?!I got a little carried away because people don't give me thumbs ups and they give me thumbs downs and I was really ANGRY!!!.Sorry again.
2007-07-24 07:32:30 · answer #1 · answered by Anonymous · 0⤊ 4⤋
3.26 Light Years
2016-10-16 05:07:02 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Set up a right triangle, with 1 astronomical unit (149,598,000 km) as your base. We're interested in the distance at which an object will show a parallax of one arcsecond (1/3600th of a degree) using that 1 AU base. Or, looked at another another way, we're looking for the distance at which 1 astronomical unit spans 1" of sky. So:
(1/3600) = inverse tan ( 149598000 / x )
x = 3.0857 x 10^13 km, or 3.26 ly
2007-07-24 11:03:29 · answer #3 · answered by clitt1234 3 · 0⤊ 0⤋
There is no need to prove that a parsec is 3.26 light years. It is stated by definition, the same way 1 meter is 100 centimeters; 1pc = 3.26ly
2007-07-24 07:53:23 · answer #4 · answered by Anonymous · 0⤊ 3⤋
(9.3e7/tan((pi/180)*(1/3600)))
/5.88e12 = 3.26 parsecs
93000000 = radius of earth's orbit around sun
tan = trigonometric tangent function
pi/180 = converts degrees to radians
1/3600 = arc seconds in one degree
5880000000000 = miles in 1 light year.
2007-07-24 07:28:00 · answer #5 · answered by jimschem 4 · 0⤊ 1⤋
Hi. Trig it out. The base is 2*93 million.
2007-07-24 07:12:25 · answer #6 · answered by Cirric 7 · 0⤊ 2⤋
See Calculating the value of a parsec at:
http://en.wikipedia.org/wiki/Parsec
2007-07-24 07:13:50 · answer #7 · answered by johnsgec 2 · 0⤊ 1⤋
Uhh... that is kind of like how do you prove 12 inches = 1 foot. It is a fact, it just does by definition. There is no proof.
2007-07-24 07:19:32 · answer #8 · answered by Anonymous · 0⤊ 5⤋