General Question Is there a reference chart for safe orbit altitudes?

[MetalMania]

In my still very early stages of Orbiter use, I've learned that Earth's minimum stable orbit altitude and velocity is in the neighborhood of 200km and 7800 m/s. Not necessarily etched in stone but close to that. I was just wondering, is there a table or chart or anything that gives similar info - minimum safe/stable orbit alt and vel for the other bodies in the solar system, including moons?

 

[insanity]

200km is where Orbiter decides that the atmosphere starts.

Bodies without atmospheres can be orbited at practically any height. For the moon I like 20km. For smaller moons I like less than that. In orbiter mars' atmosphere starts at 100km so I usually try and get an orbit just above that.

 

[n72.75]

In my still very early stages of Orbiter use, I've learned that Earth's minimum stable orbit altitude and velocity is in the neighborhood of 200km and 7800 m/s. Not necessarily etched in stone but close to that. I was just wondering, is there a table or chart or anything that gives similar info - minimum safe/stable orbit alt and vel for the other bodies in the solar system, including moons?

The velocity for orbit also varies depending on the shape of the orbit.

 

[Kaito]

Orbit MFD should tell you when you're at a good velocity

If I remember correctly...
Earth atmosphere stops at 200km
Mars at 100km
Titan at like..700km (Correct me if i'm wrong)

 

[orb]

In theory, assuming you want a circular orbit, where orbital speed will be constant, you can use this equation to calculate your speed: [math]v=\sqrt{\frac{GM}{r}}[/math]
Where:
v - your speed, of course
G - Gravitational constant [math]G=6.67428*10^{-11}[/math]
M - mass of celestial body (star / planet / moon)
r - radius of orbit (i.e. radius of celestial body + altitude)

Now, you only need to find mass, radius and the lowest altitude, for which atmospheric drag is insignificant for specified celestial body. All of those you can get from Orbiter config files i.e. Mass, Size, AtmAltLimit in planet's configuration file (if you don't have AtmAltLimit, then either there is no atmosphere, or you have Orbiter 2009 beta, where is a new atmospheric model used).