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# RE: [FT] Jump Point

From: Noam Izenberg <noam.izenberg@j...>
Date: Thu, 2 Oct 2003 07:59:18 -0400
Subject: RE: [FT] Jump Point
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From Laserlight:

> Let's assume that the jump limit for a star is based on the square
> root of the mass (with Sol set as 1)--this way gas giants and planets
> can also have jump limits.  How far out from the sun should the jump
> limit be?

If we say 1km/

Sun: Mass ~ 2e30 kg,  Sqrt = 1.4 e15:

Assume that Hyperlimit = Sqrt(mass)/Factor in km:
Factor = 1e8 =: ~14 AU, which is outside the orbit of Saturn
Factor = 2e8: = ~7 AU, which is Between Saturn and Jupiter
Factor = 3e8: = ~4.7 AU, which is "just" inside Jupiter's orbit

Taking either of the last two and 1mu = 1000 km

Jupiter: Mass ~1.9e27 kg, Sqrt = 4.4e13
Factor = 2e8: = ~220 MU
Factor = 3e8: = ~147 MU

Earth: Mass ~6e24 kg, Sqrt = 4.4e13
Factor = 2e8: = ~12 MU
Factor = 3e8: = ~8 MU

Mars - About an MU either way.

What's going to govern in-system jumps? Say you have to stop at the

If you force Earth's limit to be about 10x or more than these
calculations, the solar hyperlimit goes out to beyond pluto, unless you
add further non-linearity to the equation.

Here's a very ugly exponential:
Dist (MU) =73.568*e^(4.8643e-15* (Sqrt(mass)))

WHich gives:

Earth = 74.5 MU
Jupiter = 613 MU
Sol = 70,164 (Inside Jupiter'sorbit, outside the main belt.

Zone Miner Garb   (what Noam R. Izenberg wears in the Zone MInes)
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