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Groups > sci.physics.relativity > #390826
| From | Sylvia Else <sylvia@not.at.this.address> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: The trajectory parameters a, t and v of some of Jupiter's moons |
| Date | 2016-08-25 16:08 +1000 |
| Message-ID | <e27gbrF8a7rU1@mid.individual.net> (permalink) |
| References | (4 earlier) <cbb1e62d-2fdd-4848-bbb7-4e3aeb3c0a9b@googlegroups.com> <e253veFl5btU1@mid.individual.net> <10a59e80-0a8e-412e-8dc5-d019bfd9c2e9@googlegroups.com> <e25aisFmpenU1@mid.individual.net> <63967e50-2d34-418a-b8af-3ea6202e1066@googlegroups.com> |
On 25/08/2016 1:53 PM, Peter Riedt wrote: > On Wednesday, August 24, 2016 at 6:18:07 PM UTC+8, Sylvia Else wrote: > >> The constant of proportionality in Kepler's third law is 4 * Pi^2 / (G * M) >> >> So we have P^2 / a^3 = 4 * Pi^2 / (G * M) >> >> P = sqrt(Pi^2 * a ^ 3 / (G * M)) >> >> Where the central body is the sun, the product G * M is known more >> accurately than either of the factors, being 1.32712440018(9)×10^20 >> >> The semi-major axis of Earth is 149,598,023 km >> >> Plugging those numbers in gives a value for P of 31558244.21 seconds, >> which is 365.26 days to two decimal places. >> > >> Sylvia. > > Thanks for the info. I got this for P=sqrt(PI^2*a^3/GM): > > P=sqrt(9.86960437853402*149598023^3/132720000000000000000) > =498.9654411 > > Where did I go wrong? > You need to express the semi-major axis in metres, not kilometers. Note that I lost the four when writing out the expression for P, so you need to put it back in. P = sqrt(4 * Pi^2 * a ^ 3 / (G * M)) Sylvia.
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The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-23 23:24 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 08:31 +0200
Re: The trajectory parameters a, t and v of some of Jupiter's moons Sylvia Else <sylvia@not.at.this.address> - 2016-08-24 16:38 +1000
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-23 23:43 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Sylvia Else <sylvia@not.at.this.address> - 2016-08-24 16:47 +1000
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 00:54 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Sylvia Else <sylvia@not.at.this.address> - 2016-08-24 18:25 +1000
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 01:34 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Sylvia Else <sylvia@not.at.this.address> - 2016-08-24 20:18 +1000
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 20:53 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Sylvia Else <sylvia@not.at.this.address> - 2016-08-25 16:08 +1000
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-25 01:11 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-26 19:35 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Sylvia Else <sylvia@not.at.this.address> - 2016-08-27 13:40 +1000
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-26 21:48 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Gary Harnagel <hitlong@yahoo.com> - 2016-08-27 05:19 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-06 08:34 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-24 07:53 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Gary Harnagel <hitlong@yahoo.com> - 2016-08-24 09:42 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 18:18 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Sylvia Else <sylvia@not.at.this.address> - 2016-08-25 11:53 +1000
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 21:01 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Sylvia Else <sylvia@not.at.this.address> - 2016-08-25 16:11 +1000
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-25 08:44 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-25 01:19 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-25 06:18 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-25 22:14 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-25 08:36 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-25 17:58 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons "Dono," <sa_ge@comcast.net> - 2016-08-25 18:47 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-25 19:36 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons "Dono," <sa_ge@comcast.net> - 2016-08-25 20:20 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-26 15:14 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-26 20:44 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-06 08:33 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 11:08 +0200
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-24 07:48 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 17:54 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons "Dono," <sa_ge@comcast.net> - 2016-08-24 18:00 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-25 08:34 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons mlwozniak@wp.pl - 2016-08-25 02:46 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons "Dono," <sa_ge@comcast.net> - 2016-08-24 07:22 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 17:56 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons "Dono," <sa_ge@comcast.net> - 2016-08-24 18:02 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Tom Roberts <tjroberts137@sbcglobal.net> - 2016-08-24 11:36 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 18:03 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons mlwozniak@wp.pl - 2016-08-25 02:50 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 11:07 +0200
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 17:38 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-24 20:40 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-26 04:01 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-26 19:54 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-25 08:32 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-24 07:46 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-24 07:52 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-27 09:20 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-27 10:59 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-27 16:30 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-27 18:38 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-27 20:45 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-27 22:06 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-28 00:01 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-28 21:26 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-29 04:55 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-29 19:20 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-29 19:33 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-29 20:00 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-06 11:34 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-06 09:56 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-06 18:54 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-09-06 19:59 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons John Gogo <jfgogo22@yahoo.com> - 2016-09-06 20:07 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-06 21:47 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Python <python@org.invalid> - 2016-09-07 10:41 +0200
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-07 07:45 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-10 19:07 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-11 17:49 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-11 18:02 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-11 20:08 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-12 00:48 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-12 07:34 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons John Gogo <jfgogo22@yahoo.com> - 2016-09-06 19:40 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-06 19:21 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-07 07:32 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-07 19:38 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-08 11:20 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-08 11:10 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-09-06 11:27 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-27 23:57 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-23 23:39 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 11:12 +0200
Re: The trajectory parameters a, t and v of some of Jupiter's moons mlwozniak@wp.pl - 2016-08-24 02:41 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-24 07:50 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons mlwozniak@wp.pl - 2016-08-25 02:48 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 17:40 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-25 08:33 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-02 19:00 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Odd Bodkin <bodkinodd@gmail.com> - 2016-08-24 07:45 -0500
Re: The trajectory parameters a, t and v of some of Jupiter's moons Prokaryotic Caspase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2016-08-24 07:43 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-24 17:59 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons astrofoton@interia.pl - 2016-08-26 10:30 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-26 20:37 -0700
Re: The trajectory parameters a, t and v of some of Jupiter's moons astrofoton@interia.pl - 2016-08-27 08:12 -0700
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