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Halowerk Space Debris Collision Check
x402
Halowerk Space Debris Collision Check is a paid API for AI agents from space.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Analytically propagates two Cartesian states with constant velocity to compute time of closest approach and determine whether the miss distance falls within the combined hard-body radii of the two objects.
Price / call$0.004
Success—
StatusUnknown
How this service works
Propagates two caller-supplied Cartesian states with constant velocity, analytically finds the clamped time of closest approach, and compares miss distance with combined hard-body radius. It ignores gravity, covariance, maneuver uncertainty, tracking error, and nonlinear dynamics and is not an operational conjunction assessment.
Output
Returns the clamped time of closest approach within the specified horizon, the computed miss distance in km or m, a boolean collision flag indicating whether miss distance is less than or equal to the combined hard-body radii, and the sum of both object radii used as the collision threshold.
Example use cases
Satellite close-approach screening
“My satellite is at position (7000, 200, 100) km with velocity (0, 7.2, 0.3) km/s and a hard-body radius of 2 m. A tracked debris object is at (7000.05, 199.8, 100.1) km moving at (0.05, 7.15, 0.28) km/s with a 0.5 m radius. Check if they'll come within combined hard-body distance over the next 86400 seconds.”
Debris avoidance maneuver decision
“Before I decide whether to execute a collision avoidance maneuver, can you check the minimum miss distance between my spacecraft at (42164, 0, 0) km doing (0, 3.07, 0) km/s with a 5 m body radius and a debris fragment at (42164.1, 0.2, 0) km doing (-0.01, 3.06, 0.01) km/s with a 1 m radius over the next two hours?”
Constellation conjunction screening
“I have two constellation satellites that may be approaching each other — one at position (550, 6350, 2200) km velocity (-7.1, 0.4, 0.8) km/s radius 1.5 m, and another at (549.5, 6350.3, 2200.1) km velocity (-7.08, 0.38, 0.79) km/s radius 1.5 m. What's the closest they'll get in the next 600 seconds and do they collide?”
Technical details
Endpoint
POSThttps://space.halowerk.com/v1/debris-collisionWhen to prefer
Use this endpoint when you need a fast, zero-cost-overhead analytical screen of whether two objects on known linear trajectories come within hard-body distance — e.g., pre-filtering a large catalog for detailed follow-up, or doing a quick sanity check on Cartesian state data. Do not use for operational conjunction assessment, probabilistic collision avoidance, or any scenario where orbital perturbations, maneuver uncertainty, or covariance matter.
Side effects
- Invalid or missing position/velocity vectors returns a 400 validation error
- Horizon exceeding 604800 seconds (7 days) is rejected as out of range
- Objects on identical trajectories (zero relative velocity) may return degenerate closest approach times
- Negative radius values rejected by schema validation
- Result is physically meaningless for real conjunction assessment because gravity, atmospheric drag, covariance, and nonlinear dynamics are all ignored
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| horizon_seconds | number | |
| primary_radius_m | number | |
| secondary_radius_m | number | |
| primary_position_km | object | |
| primary_velocity_km_s | object | |
| secondary_position_km | object | |
| secondary_velocity_km_s | object |
Tags
x402
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