# Tag Info

### What is the name of this specific, popular MEO orbit?

Answer: Space junk. As PearsonArtPhoto explained in the answer to the linked question, these are upper stages of GEO launch vehicles. The perigee appears to be over Cape Canaveral (Lat 28*N) so we ...

### Vis-Viva equation applied to Earth

With $r = a$ for a circle, your (correct!) equation simplifies to $$v = \sqrt{\frac{GM}{a}}$$ which using a different mass for the Sun than you used, gives the right answer. I used ...

### Equivalent Vis-Viva equation but for acceleration

Equivalent Vis-Viva equation but for acceleration Comments are already mostly conclusive, I'll stick my neck out and answer a bit further. Let's see what "equivalent" might mean to the OP: ...

### In circle orbit, give a delta V to a satellite, how to find final orbit altitude?

I used my Hohmann Spreadsheet inputting 600 km into periapsis for earth orbit and adjusting by trial and error the apoapsis for earth orbit. I look at the sum of the apoapsis and periapsis ...

### In circle orbit, give a delta V to a satellite, how to find final orbit altitude?

Matlab's symbolic toolbox is very helpful to solve this problem. Below, I wrote expressions for $\Delta v$ from initial circular orbit to Hohmann transfer orbit and from Hohmann transfer orbit to ...

### In circle orbit, give a delta V to a satellite, how to find final orbit altitude?

In addition to the great answers you have already got, beware of what happens in the extreme case! The cost of a Hohmann transfer increases by altitude, but only up to a point. After that, the cost ...