/sci/ - Science & Math » Thread #11889975

18KiB, 355x200, geostat.png

View Same Google iqdb SauceNAO

Do objects lose energy while orbiting around another object?

Anonymous Sat 11 Jul 13:48:05 2020 No.11889975 View Reply Original Report

Quoted By: >>11890040 >>11890046 >>11890657 >>11890705

Or they fall slowly towards it? Or speed slowly decreases?
They can't stay in an infinitely stable orbit forever without exchanging any energy isn't it?

Anonymous

Anonymous Sat 11 Jul 2020 14:21:37 No.11890040 Report

Quoted By: >>11890155 >>11893755

>>11889975
>Or they fall slowly towards it?
Yes.
>They can't stay in an infinitely stable orbit forever without exchanging any energy isn't it?
Right.
The problem you're having thinking about this is probably "where does that energy go?", and the answer is gravitational waves. They're a little different, but you can think about Hertzian dipoles as an analog, where e.g. a negative charge orbits a positive charge (in the classical sense, in a plane). Since looking at this from the top reveals this to be a dipole that changes orientation, electromagnetic waves are produced, robbing the system of energy and lowering the height of the orbit until at one point, the negative charge will reach the center.

Anonymous

Anonymous Sat 11 Jul 2020 14:27:25 No.11890046 Report

Quoted By:

>>11889975
>the answer is gravitational waves
wow cool thanks fren

Anonymous

Anonymous Sat 11 Jul 2020 15:18:12 No.11890155 Report

Quoted By: >>11890210 >>11890366

>>11890040
>The problem you're having thinking about this is probably "where does that energy go?"
Tidal forces and air resistance mostly.

Anonymous

Anonymous Sat 11 Jul 2020 15:41:43 No.11890210 Report

Quoted By: >>11890216

>>11890155
>Tidal forces
not a very satisfying answer...

Anonymous

Anonymous Sat 11 Jul 2020 15:42:58 No.11890216 Report

Quoted By:

>>11890210
Oh well gee wiz anon it sure is a shame reality didn't even offer to suck your dick

Anonymous

Anonymous Sat 11 Jul 2020 16:49:27 No.11890366 Report

Quoted By: >>11890373

>>11890155
>air resistance
>in space

Anonymous

Anonymous Sat 11 Jul 2020 16:50:28 No.11890370 Report

Quoted By:

they're going just about as fast as they're falling

Anonymous

View Same Google iqdb SauceNAO 1582229156153.png, 159KiB, 1273x1024

Anonymous Sat 11 Jul 2020 16:52:05 No.11890373 Report

Quoted By: >>11890392 >>11890452 >>11890454

>>11890366
Yes.

Anonymous

Anonymous Sat 11 Jul 2020 16:57:44 No.11890392 Report

Quoted By: >>11890395 >>11890424

>>11890373
Anon, I'm not sure how to tell you this, but 35,000 km are a lot more than 420 km. Like, a whole lot more.

Anonymous

Anonymous Sat 11 Jul 2020 16:58:56 No.11890395 Report

Quoted By:

>>11890392
OP's image mentions GSO but OP's post does not specify.

Anonymous

Anonymous Sat 11 Jul 2020 17:11:26 No.11890424 Report

Quoted By: >>11890510

>>11890392
Even deep space has dust, but it's true that geostationary satellites stay in space for a very, very long time.

Anonymous

Anonymous Sat 11 Jul 2020 17:17:20 No.11890452 Report

Quoted By: >>11890462

>>11890373
I'm sure that air density is extremely low above GSO orbit for example

Anonymous

Anonymous Sat 11 Jul 2020 17:18:22 No.11890454 Report

Quoted By: >>11890462

>>11890373
I'm sure that air pressure is extremely low above GSO orbit for example

Anonymous

Anonymous Sat 11 Jul 2020 17:19:41 No.11890462 Report

Quoted By:

>>11890452
>>11890454
On human timescales it's utterly negligible at GSO.

Anonymous

Anonymous Sat 11 Jul 2020 17:30:56 No.11890510 Report

Quoted By: >>11890649

>>11890424
Dust isn't air.

Anonymous

Anonymous Sat 11 Jul 2020 18:03:58 No.11890649 Report

Quoted By:

>>11890510
Air is dust.

Anonymous

Anonymous Sat 11 Jul 2020 18:06:13 No.11890657 Report

Quoted By:

>>11889975

very slowly

Anonymous

Anonymous Sat 11 Jul 2020 18:25:20 No.11890705 Report

Quoted By: >>11890748 >>11890751

>>11889975
If you want to better understand basic orbitali mechanics play kerbal space program

Anonymous

Anonymous Sat 11 Jul 2020 18:43:18 No.11890748 Report

Quoted By:

>>11890705
>play kerbal space program
I surely will soon, everybody in the space / sci community is playing it I'm curious

Anonymous

Anonymous Sat 11 Jul 2020 18:44:20 No.11890751 Report

Quoted By: >>11890764 >>11890768

>>11890705
at the same time ksp remains a software running on equations that doesn't necessarily represent reality with 100% accuracy...

Anonymous

Anonymous Sat 11 Jul 2020 18:48:57 No.11890764 Report

Quoted By:

>>11890751
>Basic orbital mechanics
>Representing reality with 100% accuracy
???

Anonymous

Anonymous Sat 11 Jul 2020 18:50:38 No.11890768 Report

Quoted By: >>11890829

>>11890751
It uses patched conics - it's only good for Kepler orbits. It also ignores sun pressure and other effects.
For example the Halo orbit of the JWS telescope cannot be simulated in KSP.

Anonymous

Anonymous Sat 11 Jul 2020 18:53:17 No.11890780 Report

Quoted By: >>11890788

The energy has already been given to the space craft when it launched, if there is nothing to rob it of that energy it will orbit forever

Anonymous

View Same Google iqdb SauceNAO branelet.jpg, 39KiB, 644x500

Anonymous Sat 11 Jul 2020 18:57:00 No.11890788 Report

Quoted By: >>11890790

>>11890780

Anonymous

Anonymous Sat 11 Jul 2020 18:57:38 No.11890790 Report

Quoted By: >>11890831

>>11890788
I'm probably wrong but explain to me why ?

Anonymous

Anonymous Sat 11 Jul 2020 19:12:01 No.11890829 Report

Quoted By:

>>11890768
>patched conics
thanks for making me learn about this numerical way to solve trajectories... seems indarasting

Anonymous

Anonymous Sat 11 Jul 2020 19:12:43 No.11890831 Report

Quoted By: >>11890843

>>11890790
Not him but
>orbit space isn't perfectly empty, there are always miniscule amounts of gases and dust that will gradualy slow orbit down
>object you are orbiting is not situated in empty Universe, outside gravitational forces may make orbit unstable in the long run
>minor energy losses to things like tidal forces or gravitational waves

Anonymous

Anonymous Sat 11 Jul 2020 19:19:21 No.11890843 Report

Quoted By: >>11890910

>>11890831
>tidal forces

isn't the sum of the forces of a closed system zero

Anonymous

Anonymous Sat 11 Jul 2020 19:43:52 No.11890910 Report

Quoted By: >>11891917

>>11890843
I think 2 body systems bleed energy until they're both tidaly locked

Anonymous

Anonymous Sun 12 Jul 2020 04:57:40 No.11891917 Report

Quoted By:

>>11890910
ooh so the tidally locked state is the lowest energy state (except free fall towards the biggest body ofc)?

Anonymous

Anonymous Sun 12 Jul 2020 17:58:52 No.11893755 Report

Quoted By: >>11893798

>>11890040
However our moon is receding. There is a lot more to this than gravitational waves.

Anonymous

Anonymous Sun 12 Jul 2020 18:11:36 No.11893798 Report

Quoted By:

>>11893755
Indeed. I assumed it was a general question about gravitational interaction without interfering environmental effects.

Capcode	All Only User Posts Only Moderator Posts Only Admin Posts Only Developer Posts
Show Posts	All Only With Images Only Without Images
Deleted Posts	All Only Deleted Posts Only Non-Deleted Posts
Ghost Posts	All Only Ghost Posts Only Non-Ghost Posts
Post Type	All Only Sticky Threads Only Opening Posts Only Reply Posts
Results	All Grouped By Threads
Order	Latest Posts First Oldest Posts First

Your latest searches