Dropping orbits, tidal forces and Kraken

[Andrew1233]

Hi guys! I finally orbited Laythe for the first time! (Launch: https://forum.kerbalspaceprogram.com/topic/223681-liftoff-of-the-2nd-laythe-orbiter/    Orbit: https://forum.kerbalspaceprogram.com/topic/223700-laythe-probe-got-into-low-laythe-orbit/#comment-4366617) But I just can't get a 100% circular orbit, bc every time I did it, a mysterious force just moves my orbit and pulled either points of my orbit, what causes this? Tidal forces? Kraken? Ghost of Bob? I don't know!

 PLZ HELP!!!

Edited February 15, 2024 by Andrew1233
Forgot something

[Martian Emigrant]

Hi.

Congrats on making it to Laythe.

 

Why would you want perfect circles?

Small deviations (Even larger ones) are normal and expected.

 

Some ideas.

I don't really know but I think the game keeps more decimals than what is saved so on reload ships always move a bit, speeds are ever so sightly off.

When you do a burn the ship loses mass and the burns are not instantaneous.

The later part of the burn is more efficient.

So burning in the middle of the burn time is actually a bit off.

Is your ship balanced?  The engines need to gimbal for any off-centre mass.

So the average direction is a bit off.

 

ME

 

 

[Andrew1233]

37 minutes ago, Martian Emigrant said:

Hi.

Congrats on making it to Laythe.

 

Why would you want perfect circles?

Small deviations (Even larger ones) are normal and expected.

 

Some ideas.

I don't really know but I think the game keeps more decimals than what is saved so on reload ships always move a bit, speeds are ever so sightly off.

When you do a burn the ship loses mass and the burns are not instantaneous.

The later part of the burn is more efficient.

So burning in the middle of the burn time is actually a bit off.

Is your ship balanced?  The engines need to gimbal for any off-centre mass.

So the average direction is a bit off.

 

ME

 

 

yeah, but I'm using 2 ant engines and at 0.5% thrust, no problem with craft, i dont really know whats wrong tho

 

[GluttonyReaper]

A picture would help here - orbits can bounce around a bit depending on craft design (e.g. minor flexing between parts can throw off the calculations a little), but it usually evens out when you let things rest. Does the orbit stabilize when you timewarp?

[Andrew1233]

7 hours ago, GluttonyReaper said:

A picture would help here - orbits can bounce around a bit depending on craft design (e.g. minor flexing between parts can throw off the calculations a little), but it usually evens out when you let things rest. Does the orbit stabilize when you timewarp?

yeah when time warping(not physical), they get stabilized.

[Andrew1233]

On 2/15/2024 at 3:06 AM, GluttonyReaper said:

A picture would help here - orbits can bounce around a bit depending on craft design (e.g. minor flexing between parts can throw off the calculations a little), but it usually evens out when you let things rest. Does the orbit stabilize when you timewarp?

my (target)orbit is at 100,000 meters