Lusteron and Hearthena

[MrFun]

Omni, what equation did you use to get 1.25 Earth radius = 1.95 Earth volume?

I need to know the equation in order to find out if 1.12 Earth radius with 1.15 Earth density would make for a more comfortable gravity level.

[MrFun]

Also, I am willing to change the AU distance from Lusteron to 1.37 as long as this doesn't create an unreasonably higher level of irradition and making it unihabitable for a hominid species.

[Omni Rex Draconis]

Volume is 4/3 x pi x radius^3. You can leave out the first bit and just cube the radius to get "Earth volumes".

So 1.25^3 = 1.953125.

Gravity is reduced by the square of the distance. Thus, you can figure that gravity will increase in proportion to the radius.

For example, double the size is eight times the volume/mass, but one quarter grav due to distance. One quarter of eight is two, same as your size increase.

Density is just a straight multiplier. Twice as dense, twice the gravity.

[Omni Rex Draconis]

I noticed you are sticking to your 1.15 earth density. Got a bigger iron core in mind?

As for the solar distance, it works out pretty much earthlike. At 1.37 AU, your planet is receiving about 53% (inverse square law again) of what it would at Earth orbit. Your star has twice the luminosity, though, so it is all good (assuming that is what you wanted).

Remember that your star is hotter that Sol. The colour will be less red and more blue, and it will radiate more ultraviolet and other high energy particles. It would be a good idea to set the big iron core spinning for a larger magnetosphere; helps block out the ionized particles.

You can also change the numbers quite significantly once you get to the atmosphere stage. It can trap heat or reflect light, it can block UV or let it all through.

[Provost Harrison]

I thought they were two new antidepressants about to enter the market

[Theben]

IT figures a gay person would name a planet "Lust"...

[reds4ever]

Originally posted by Provost Harrison
I thought they were two new antidepressants about to enter the market

What, without informing YOU first?

[Pekka]

what is this.. some perversed way to subtly say to everyone "I have LUST in my HEART?"..

Does the planet have any superpowers and if not, why?

[General Ludd]

Lusteron?


Is this going to be an erotic novel?

[Saras]

Lust Enron. A porn empire with dodgy accounting.

[Omni Rex Draconis]

You were worried about the physics, MrFun? These guys won't even let you get by with the names!

Or is this just a case of friends/ex-lovers having a bit o' fun with you?

[Wezil]

Just OT spam ORD.

[MrFun]

Originally posted by Theben
IT figures a gay person would name a planet "Lust"...

luster, as in illumination

[MrFun]

Originally posted by Omni Rex Draconis
You were worried about the physics, MrFun? These guys won't even let you get by with the names!

Or is this just a case of friends/ex-lovers having a bit o' fun with you?

They think they are being funny.


Thank you for your help so far, Omni. If my book would ever get published I will have to include you in the acknowledgement.

[Immortal Wombat]

Originally posted by MrFun luster, as in illumination

Lustre. Clearly the first colonists would be European, after the economic collapse of America following WW3.