How does the Satellite Period Calculator work?

Input orbital radius or planet name with altitude Then: Apply T = 2π√(a³/GM) Then: Results show period in hours/days.

Can you give an example of how to use the Satellite Period Calculator?

Example: Input ISS at 400 km altitude around Earth gives a result of T ≈ 90 minutes (16 orbits per day).

Is the Satellite Period Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Satellite Period Calculator?

Our Satellite Period Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Specialized

Satellite Period Calculator

Semi-major Axis (km)

Central Mass (Solar Masses)

Satellite orbital period (Kepler third law) depends on orbital radius and central body mass: T² ∝ a³.

Symbol	Name	Unit	Description
T	2π√(a³/GM)	—	2π√(a³/GM)
GM	GM value	—	Variable used in the calculation

Difficulty:intermediate

References

›Satellite Period — Wikipedia

🔒

100% Free

No sign-up ever

✓

Accurate

Verified formulas

⚡

Instant

Results as you type

📱

Mobile Ready

All devices

Satellite Period Calculator

Satellite Period Calculator

What is Satellite Period Calculator?

Formula

Variable Legend

How to Satellite Period Calculator

Worked Examples

Real-World Applications

Frequently Asked Questions

Common Mistakes to Avoid

Settings

Satellite Period Calculator