Question 1

What is an orbital calculator?

Accepted Answer

An orbital calculator computes satellite orbital parameters like period, velocity, altitude, and delta-V requirements from user inputs. It helps engineers plan orbit changes and mission profiles.

Question 2

How do you calculate orbital period?

Accepted Answer

Orbital period T = 2π × √(a³/μ), where a is the semi-major axis and μ is the gravitational parameter (398,600 km³/s² for Earth). A satellite at 400 km altitude has a period of about 92 minutes.

Question 3

What is delta-V?

Accepted Answer

Delta-V (Δv) is the change in velocity needed for an orbital maneuver. It is the fundamental measure of how much propellant a spacecraft needs. More delta-V means more fuel or more efficient engines.

Question 4

Is this orbital calculator free?

Accepted Answer

Yes, SpaceNexus provides this orbital mechanics calculator completely free with no account required. It runs in your browser with no downloads needed.

Orbital Mechanics Calculator

Orbital Mechanics Calculator