RE: [FT] Jump Limits

Here is a quick reference for those who did not have the figures handy.
Mean
distance from the Sun:
Sun:	0au		2.0x10^30kg	
Mercury:	 0.387au		3.3x10^23kg
Venus:	 0.723au		4.8x10^24kg
Earth:	 1.0au		5.9x10^24kg
Mars:	 1.524au		6.4x10^23kg
Jupiter:	 5.23au 	1.9x10^27kg
Saturn:  9.539au		5.7x10^26kg
Uranus: 19.18au 	8.7x10^25kg
Neptune:	30.06au 	1.0x10^26kg
Pluto:	39.53au 	1.3x10^22kg
*All distance and mass are approximate.

You could set zones of safe jump points by setting a limit. Minimum safe
jump point is 5au from a planetary size body (mass of 1x10^22). 

Or some _wierd_ formula based on mass. 1/2au per exponent of 10 in mass
(round up if multiplier is over 5.0) and round up. Would provide minimum
safe distances of:
15au from the sun minimum
12au from Mercury
12au from Venus
13au from Earth
12au from Mars
14au from Jupiter
14au from Saturn
13au from Uranus
13au from Neptune
11au from Pluto
Jumps could be in the planetary plane, above or below it.
-----
Brian Bell
bkb@beol.net
http://fly.to/fullthrust/      
-----

> -----Original Message-----
> From: Laserlight [SMTP:laserlight@cwix.com]
> Sent: Thursday, September 09, 1999 7:14 AM
> To:	gzg-l@CSUA.Berkeley.EDU
> Subject:	[FT] Jump Limits
> 
> Andrew declaimed (speaking of Jump Limits)
> > In my opinion, they should be at the trojan points
> >and those points
> >where space-time is very close to "flat" - gravitation pull
> very close
> >to zero in any direction.
> 
> How close is "very"?	I guess that's what we're asking about
> for the Jump Limit.
> 
>  So, that's a ring around each planet, points
> >if there's a moon, too complex if there's lots or a ring.
> Otherwise, at
> >the Oort or Kuiper belt? Something like 100 AU out?
> 
> 
> I'd think 100 would make for a map rather larger than would
> be convenient?