Comments on: I am created Shiva, destroyer of worlds

By: Your Name Here

Your Name Here — Wed, 09 Jun 2010 10:45:26 +0000

Found another one, basically a unstable stable star and planetary system:

Body 1: 200, -245, -124, 0, 0
Body 2: 0.001, -332, -118, 0, 150
Body 3: 200, -56, 132, 0, 0
Body 4: 200, 141, -120, 0, 0

Accuracy: 100% accuracy or 0% speed or all the way to the left.

Turn ‘system centered’ off.

I got this while looking for a horseshoe orbit one.

EDIT: It doesn’t seem to work anymore. Hmm.

By: Arthur Maruyama

Arthur Maruyama — Wed, 28 Apr 2010 00:28:01 +0000

Again, using the numbers in my last post but change the last one to -124 and you get a double exchange of co-orbits.

By: Arthur Maruyama

Arthur Maruyama — Tue, 27 Apr 2010 23:20:02 +0000

Fun 4-body:
200,0,0,0,-1
10,142,0,0,140
10,166,0,0,74
10,-107,0,0,-133
accuracy at max

Blue and magenta start out co-orbiting each other, then green disrupts the system and tosses blue out and goes into a co-orbit with magenta.

Change the last number from -133 to -137 and green and blue go into a co-orbit tossing out magenta which falls into a short cometary-like orbit.

By: Your name here

Your name here — Fri, 12 Mar 2010 06:57:17 +0000

A very unstable stable 3 planet system:
Body 1: 200, 0, 0, 0, 1
Body 2: 1, 100, 100, -50, 50
Body 3: 1, 150, -150, 50, 50
Body 4: 1, -200, -200, 50, -50
Accuracy: Default (30% accuracy or 70% speed or 2 to the right of the half mark)

By: Lukas

Lukas — Fri, 12 Mar 2010 02:19:59 +0000

Three bodies sharing one orbit:

400/0/0/0/-1
0.1/0/150/-164/0
0.1/108/-108/113/115
0.1/-108/-108/115/-113

not completely stable (at least in fast; but interesting positions; most of the time the system keeps itself from getting out of whack)

By: vrs

vrs — Wed, 10 Mar 2010 12:33:18 +0000

@MoonShark (20): even better (some very interesting patterns, then crash):
150/-100/0/0/-50
150/100/0/0/50
5/50/0/0/-100
5/-50/0/0/100
http://img215.imageshack.us/img215/4152/2010031044.png

By: Lukas

Lukas — Sun, 07 Mar 2010 07:47:05 +0000

I call it the sunflower… get it? ahahaha! ohh.. I’m so funny

100/-50/0/0/71
100/50/0/0/-71
0.06/80/0/0/76
1/-20/0/0/-249
(accuracy: second click from left)

but seriously.. the 4th body’s orbit is very strange. At the closest point it’s orbiting body #1 at the farthest body #2, intersecting all other orbits.

It’s surprisingly stable too. didn’t crash yet on my watch

By: Joe

Joe — Fri, 05 Mar 2010 20:18:23 +0000

I made made what I thought would be a nice balanced earth/moon orbit. I realized that a pattern like this one could run for eons, so I let it run all night. Pretty neat! I wonder if this is a pattern similar to the celestial body that impacted with proto-Earth and produced our moon? I'm fascinated! I want to just let it run and see if they ever collide.

By: Denver Astronomer

Denver Astronomer — Fri, 05 Mar 2010 19:40:10 +0000

Sorry – In two clicks from the far left (most accurate – 2)

By: Your name here

Your name here — Fri, 05 Mar 2010 08:33:44 +0000

@Denver Astronomer

What accuracy?

By: Denver Astronomer

Denver Astronomer — Thu, 04 Mar 2010 20:59:49 +0000

Here’s a cool one – four bodies of equal mass quickly turning into a three body problem where one body gets ejected, returns, ejects another body, rinse, repeat

200 -20 0 0 -100
200 20 0 0 100
200 -180 0 0 100
200 180 0 0 -100

By: Gebo

Gebo — Thu, 04 Mar 2010 19:18:23 +0000

This is much more fun than playing Tetris!

By: Felix D.G.

Felix D.G. — Thu, 04 Mar 2010 02:15:06 +0000

Body 1 (Sun)
800 / 0 / 0 / 0 / 0

Body 2 (asteroid A)
.001 / 126 / 0 / 0 / 252

Body 3 (asteroid B)
.001 / 140 / 0 / 0 / 239

Body 4 (Jupiter)
1 / 200 / 0 / 0 / 200

Asteroid A is in 2:1 resonance with Jupiter. Asteroid B is not. See the difference.

By: Blerk

Blerk — Wed, 03 Mar 2010 22:01:51 +0000

Smaller inner planet has its orbit disrupted by other planet, orbit becomes eccentric and it eventually migrates outward and becomes the outer planet (around T-250). I’ve let it run as long as T=1100 and it what appears to settle into a somewhat stable orbit.

200/0/0/0/0
1/203/-1/-1/89
0.001/123/-5/-2/119
Slider in middle

If you run it on fast it settles into a higher orbit as well but eventually gets bullseyed into the star around T=950

Great link lot of time wasted on that today

By: Robert E

Robert E — Wed, 03 Mar 2010 17:54:05 +0000

Hm, whats the longest someone has let this run?

My second planet had huge shifts in orbit at 533 & 646 and has continued to have small changes; first planet is mostly stable.

Current time is 1604.

By: Robert E

Robert E — Wed, 03 Mar 2010 17:00:25 +0000

250 / -200 / 0 / 8 / 0
0.001 / -115 / 0 / 0 /155
0.001 / 50 / 0 / 0 / 60
0.0750 / 152 / 106 / 0 / 37

4th planed routinely shifts the orbit of the first and second planet, but so far (with maximum accuracy and at 300 time), they still have ‘stable’ orbits. I would assume that the times at which the orbits shift would be a bad time to be vacationing there.

OOPS: typing this, at some point between 300 and 317 the orbits shift a lot — orbit of the first planet gets much larger.

By: J. D. Mack

J. D. Mack — Wed, 03 Mar 2010 16:18:17 +0000

Here’s my fun set up. Three bodies with unstable orbits around the sun. Green body briefly captured by blue body. Major collision with red body leaves no green body and red and blue bodies gravitationally bound in a somewhat stable orbit around the sun. Eventually, the planets collide.

200 /0 /0 /0 /-1
5 /-1/ -126 /150/ 0
4 /170 /4/ 1 /111
2.501 /96 /115 /-47 /63

J. D.

By: Jackson

Jackson — Wed, 03 Mar 2010 08:44:21 +0000

One more just for fun. A planet with a moon orbiting a binary star system.
150/0/0/-3/-64
120/77/-1/4/120
10/-194/-5/-1/123
0.001/-208/-8/0/23
The moon however has a very large ratio between it’s apoapsis and periapsis.

By: Jackson

Jackson — Wed, 03 Mar 2010 08:07:57 +0000

@Cain, I managed to do that with a 3 body system similar to Saturn, Janus and Epimetheus, with body 2 and 3 having similar mass. Problem is that it takes a long time to see the two bodies trading orbits. But it works.

By: Lukas

Lukas — Wed, 03 Mar 2010 04:40:23 +0000

a moon with a moon…

90/0/0/0/-1
5/270/0/0/60
0.25/298/0/0/100
0.005/301/0/0/120

(worked for me at 20% speed for at least two “years”.. but at some point the tiny moon got lost, not sure how)

this is fun

By: Lukas

Lukas — Wed, 03 Mar 2010 03:18:12 +0000

@ Kevin:
set your solar mass and your planet velocity to zero. Then tweak the two moons until you think you have something stable. Low masses for the moons reduce the chance for them to perturb each other’s orbits.
Then set a normal solar mass again and add the same number to all the planet and moon vectors, to get the planet-moon system moving around the sun.
Here’s one that seems stable:

450/0/0/0/-1
10/300/0/0/120
0.001/320/0/0/54
0.002/260/0/0/170

cheers

By: Cochise

Cochise — Tue, 02 Mar 2010 22:32:34 +0000

I’ve been addicted to Orbiter lately, http://orbit.medphys.ucl.ac.uk/
It’s a free space flight simulator with a ton of add-ons. The learning curve is pretty steep so read some tutorials that comes with it and on the forum. Theres a lot of vehicles you can use, both fictional and non. I’ve made it to the Moon, Mars, and, Jupiter so far. Also successfully docked with the ISS. The physics are realistic so you need a basic knowledge of orbital mechanics. The lastest beta is out at http://www.orbiter-forum.com/

By: Solar system simulation « Masks of Eris

Solar system simulation « Masks of Eris — Tue, 02 Mar 2010 20:42:38 +0000

[...] (By the way of Phil Plait.) [...]

By: Papa Surf

Papa Surf — Tue, 02 Mar 2010 20:23:25 +0000

I love how in a simple 3 body system, a moon orbiting a planet orbiting a sun, the moon’s path relative to the sun can be almost a perfect square! Cool.

By: Kevin

Kevin — Tue, 02 Mar 2010 19:53:36 +0000

@Mathias R.:

Congratulations, you have done what I haven’t done.

Edit: Strike that, so have I:

200/0/0/0/-1
10/150/0/0/120
.001/175/0/0/50
.001/125/0/0/50

NOOOOO!! 750 or so, blue moon crashed into the planet! Sucks…