this post was submitted on 21 Mar 2025
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Orbital mechanics can be a bit counter intuitive.
To raise an orbit you need to speed up, but your overall orbital speed will decrease, since the distance grows the higher the orbit gets. So you'll need to speed up to reach escape velocity to escape Earth's gravitational pull, once you managed that, you enter the orbit around the sun. To lower an orbit you'll need to lower your speed, while your orbital velocity will increase, since the orbit gets smaller.
The "fuel" of a space craft is measured in Delta v, which describes the ability to change the velocity of the vehicle, the unit is m/s or km/s To reach a low earth orbit you need around 10.000 m/s Delta v, if I'm not mistaking another 9.000 m/s to escape velocity, then you're in a sun orbit, I don't know how much you need from there, but id say at least another 15-20km/s