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Physics Calculators: Orbital Mechanics
x402
Physics Calculators: Orbital Mechanics is a paid API for AI agents from physics-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Calculates circular orbit speed, escape speed, and orbital period at a given altitude or radius around the Sun, planets, the Moon, or a custom mass.
Price / call$0.02
Success—
StatusUnknown
How this service works
Circular orbit speed, escape speed and period at an altitude or radius around the Sun, a planet, the Moon or a custom mass.
Output
Returns circular orbit speed (km/s), escape speed (km/s), orbital period (in seconds, minutes, hours, and days), orbit radius (km), altitude (km), gravitational acceleration at the orbit, surface gravity, body mean radius, and GM — plus metadata like body name, data source, and any disclaimers.
Example use cases
ISS low Earth orbit check
“Calculate the orbital speed and period for a satellite orbiting Earth at 408 km altitude — that's roughly the ISS height.”
Mars mission orbit planning
“What circular orbit speed and orbital period would a spacecraft have at 300 km above Mars, and what's the escape velocity from that altitude?”
Custom body orbital calculation
“I have a custom body with GM of 4902.8 km³/s² and I want to know the circular speed and escape speed at an orbit radius of 1838 km from its center.”
Technical details
Endpoint
GEThttps://physics-calc.x402tookit.com/orbit?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need precise orbital mechanics calculations (speed, period, escape velocity) for any solar system body or a custom mass, without writing physics formulas yourself. Prefer this over a general physics LLM response when you need accurate numeric results grounded in standard GM values for named bodies.
Side effects
- Missing required 'body' or 'muKm3PerS2' parameter returns an error or defaults to Earth
- Providing an altitude below zero (underground) may return an error or unexpected result
- Custom GM without orbitRadiusKm may fail validation
- Unsupported body name (e.g. 'pluto') may return an error or null result
- Network or payment failure returns a 402 or 5xx HTTP error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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