Pluto and Charon look alot like Duna and Ike

[daniel l.]

Think about it: Pluto is bright red, Duna is bright red, Charon is dark gray, Ike is dark gray.

Its really amazing how the devs did that before even knowing what pluto looked like.

[HoloYolo]

SQUAD Illuminati Confirmed?

*X-Files theme starts playing*

[peachoftree]

Wow. except for the size the two systems really are quite simmilar

Image for context:

[Guest]

Wow. except for the size the two systems really are quite simmilar

Not really.

Pluto radius: 1185km

Duna radius: 320km

Pluto/Duna ratio: 3.7:1km

Charon radius: 603km

Ike radius: 130km

Charon/Ike ratio: 4.6:1km

Pluto/Charon distance: 19,570km

Duna/Ike distance: 3,200km

Pluto/Duna system ratio: 6.1:1km

Duna doesn't orbit a point outside itself nor is it tidally locked to Ike.

[UmbralRaptor]

Think about it: Pluto is bright red, Duna is bright red, Charon is dark gray, Ike is dark gray.

Its really amazing how the devs did that before even knowing what pluto looked like.

We've known the approximate colors of Pluto and Charon for a number of years. eg: http://www.boulder.swri.edu/~buie/biblio/pub072.html

[Geschosskopf]

I prefer the false color image where they look like jawbreakers. After all, Kerbals tend to regard planets (and pseudo-planets, protoplanets, moons, and potatoroids) as edible .

[peadar1987]

Not really.

Pluto radius: 1185km

Duna radius: 320km

Pluto/Duna ratio: 3.7:1km

Charon radius: 603km

Ike radius: 130km

Charon/Ike ratio: 4.6:1km

Pluto/Charon distance: 19,570km

Duna/Ike distance: 3,200km

Pluto/Duna system ratio: 6.1:1km

Duna doesn't orbit a point outside itself nor is it tidally locked to Ike.

Duna and Ike actually are tidally locked to each other.

Duna is 16.21 times Ike's mass, and their individual barycentres are located 3,200,000m apart. This means that the common barycentre is 185,938m from the centre of Duna. Duna's equatorial radius is 320,000m, so the common barycentre is well beneath its surface (although if it were a real-world system, there would be a very noticeable "wobble" of Duna as the system spun)

[Yellowburn10]

Duna doesn't orbit a point outside itself nor is it tidally locked to Ike.

Actaully... Duna IS tidally locked to Ike. The wiki states " Ike's size and proximity tidally locks it and Duna to each other."

http://wiki.kerbalspaceprogram.com/wiki/Duna

Edit: Dang ninjas!

[Guest]

Duna is 16.21 times Ike's mass, and their individual barycentres are located 3,200,000m apart. This means that the common barycentre is 185,938m from the centre of Duna.

No, the center of Duna is the center of Ike's orbit.

Did not know that Duna was tidally locked, pretty cool.

[MalfunctionM1Ke]

Oh my God D:

[peadar1987]

No, the center of Duna is the center of Ike's orbit.

Well yes, due to the way KSP is coded, there's no such thing as an offset barycentre from the game's perspective. That's not what I was really getting at though.

[Guest]

That's not what I was really getting at though.

It's part of what I was getting at.

[klgraham1013]

Not really.

Pluto radius: 1185km

Duna radius: 320km

Pluto/Duna ratio: 3.7:1km

Charon radius: 603km

Ike radius: 130km

Charon/Ike ratio: 4.6:1km

Pluto/Charon distance: 19,570km

Duna/Ike distance: 3,200km

Pluto/Duna system ratio: 6.1:1km

Duna doesn't orbit a point outside itself nor is it tidally locked to Ike.

Stock Kerbal is so tiny.

[HoloYolo]

Stock Kerbal is so tiny.

Real Solar System Masterace.-

[moogoob]

If you sit on Duna and time-warp, Ike will just sway back and forth in the sky, never setting. (It's called libration and many things in the sky display it)

[Borsek]

No, the center of Duna is the center of Ike's orbit.

Did not know that Duna was tidally locked, pretty cool.

You don't know what a common barycenter is, do you?

[monophonic]

You don't know what a common barycenter is, do you?

He does. It is something that Kerbal Space Program does not model.

[Whirligig Girl]

Not really.

Pluto radius: 1185km

Duna radius: 320km

Pluto/Duna ratio: 3.7:1km

Charon radius: 603km

Ike radius: 130km

Charon/Ike ratio: 4.6:1km

Pluto/Charon distance: 19,570km

Duna/Ike distance: 3,200km

Pluto/Duna system ratio: 6.1:1km

Duna doesn't orbit a point outside itself nor is it tidally locked to Ike.

Duna is tidally locked to Ike. And it would orbit a point outside itself if it weren't for the fact that KSP does not model barycenters.

[Guest]

Duna is tidally locked to Ike. And it would orbit a point outside itself if it weren't for the fact that KSP does not model barycenters.

No it wouldn't.

[nightingale]

CoM (relative to Duna center) = (M_Ike x d_Ike) / (M_Ike x M_Duna).

Plug these numbers in:

[TABLE=width: 308]

[TR]

[TD]Ike orbit (using SmA, as a simplification)[/TD]

[TD=align: right]3200000[/TD]

[/TR]

[TR]

[TD]Ike mass[/TD]

[TD=align: right]2.7821E+20[/TD]

[/TR]

[TR]

[TD]Duna mass[/TD]

[TD=align: right]4.51548E+21[/TD]

[/TR]

[/TABLE]

Get 185,717 m which is less than 320,000 m (Duna's radius). The center of mass of the system is still within Duna.

[Dspan_000]

OMG this . . . this must mean!!! HALF LIFE 3 CONFIRMED

[windows_x_seven]

SQUAD Illuminati Confirmed?

*X-Files theme starts playing*

Reminded of this thing that I made a while ago.

[Aethon]

I prefer the false color image where they look like jawbreakers. After all, Kerbals tend to regard planets (and pseudo-planets, protoplanets, moons, and potatoroids) as edible .

Yes.

You must have missed this one in the Sci. lab. False color Pluto by Unmanned Space Flight Forum user ZLD. Highlighting areas of different surface composition.

http://www.unmannedspaceflight.com/index.php?showtopic=7986&st=300&p=223375entry223375

Edited July 16, 2015 by Aethon