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Planet Creation Resources

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#1
Asha Hex

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Hey so, for all you planet creators out there, I found a fun little Google-Toy which will let you create a planet :) It might take a few attempts to adjust to the settings etc but it's really worth it. Anyway here you go:

 

http://planetmaker.wthr.us/

 

Raziel contributed to these resources also, adding the following;

 

Orbital period calculator: http://www.calctool....my/planet_orbit (I'd suggest setting radius to au, which would be 1 for earth)

Main sequence diagram showing typical luminosities and colours of main sequence stars:
http://commons.m.wik...e:HRDiagram.png

Mass-luminosity relationship for stars: http://en.m.wikipedi...nosity_relation

Habitable zone calculator: http://astro.unl.edu...itableZone.html

Multiple system habitable zone calculator: http://astro.twam.info/hz/

Put the above together, with the fact that brightness reduces on a distance squared basis and you'll be well on the way to placing your planet on a sensible orbit!

 

Here is his example:

 

So let's have a simple example.

I want a planet with 1.5 earth mass and a bright blue star.

I go the the main-sequence diagram and I select a star with 100 stellar luminosity and an effective temperature of 10,000K.

Now I want to place my planet in orbit. I go the habital zone calculator, where you can place your star on the main sequence and through its life find the habitable zone in AU (this is fun!). I can't find a simulation with the right mass, but by going either side I can see that the approximate mass of my star is 3 solar masses, my planet is around 10AU away from the star.

Now I go the the orbital period calculator. I enter the following numbers:
10 AU
3 Suns
1.5 Earths

I find that my orbital period is 18 years!

 

And his stance on the situation:

 

Obviously I'm not going to check if every planet makes perfect sense. I love to see creative and interesting submissions (we don't really have a great deal of empirical knowledge about habitable planets outside our solar system after all!)

However, if you're making a fairly standard planet (without environmental manipulation) I will check that your numbers aren't so far off your planet should be burnt to a crisp or a frozen rock.


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#2
Taitos Vin the Vengeful

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You're so helpful

:)



#3
Nessarose deWinter

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oooohprettycolorsssss

*wipes drool*


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#4
Asha Hex

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A visual representation of the sort of thing you can make:

 

aurum_by_kioxes-d7f4623.png

 

It's excellent because you can view it from every angle, change the orbital period, rotational period etc :X squee


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#5
Fatty

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http://channel.natio...system-builder/

 

This is also kinda fun if you want multiple planets, but it's pretty difficult to make a stable system.



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#6
Raziel

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Orbital period calculator: http://www.calctool....my/planet_orbit (I'd suggest setting radius to au, which would be 1 for earth)

Main sequence diagram showing typical luminosities and colours of main sequence stars:
http://commons.m.wik...e:HRDiagram.png

Mass-luminosity relationship for stars: http://en.m.wikipedi...nosity_relation

Habitable zone calculator: http://astro.unl.edu...itableZone.html

Multiple system habitable zone calculator: http://astro.twam.info/hz/

Put the above together, with the fact that brightness reduces on a distance squared basis and you'll be well on the way to placing your planet on a sensible orbit!

Edited by Raziel, 28 August 2014 - 04:34 AM.


#7
Raziel

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So let's have a simple example.

I want a planet with 1.5 earth mass and a bright blue star.

I go the the main-sequence diagram and I select a star with 100 stellar luminosity and an effective temperature of 10,000K.

Now I want to place my planet in orbit. I go the habital zone calculator, where you can place your star on the main sequence and through its life find the habitable zone in AU (this is fun!). I can't find a simulation with the right mass, but by going either side I can see that the approximate mass of my star is 3 solar masses, my planet is around 10AU away from the star.

Now I go the the orbital period calculator. I enter the following numbers:
10 AU
3 Suns
1.5 Earths

I find that my orbital period is 18 years!

Edited by Raziel, 28 August 2014 - 04:29 AM.


#8
Raziel

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Obviously I'm not going to check if every planet makes perfect sense. I love to see creative and interesting submissions (we don't really have a great deal of empirical knowledge about habitable planets outside our solar system after all!)

However, if you're making a fairly standard planet (without environmental manipulation) I will check that your numbers aren't so far off your planet should be burnt to a crisp or a frozen rock.