Api Endpoint

space.halowerk.com

Uses da/dt = -rho×sqrt(mu×a)/ballistic_coefficient for a circular orbit, holds density and ballistic coefficient constant, and linearly projects altitude over a bounded horizon. Real density changes rapidly with altitude and solar activity; the result is not a lifetime prediction or maneuver plan.

Open interactive test console

Offering

Provider
space.halowerk.com
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Science And Education
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://space.halowerk.com/v1/orbit-decay
MIME type
Not provided
First seen
2026-10-16T01:57:40.935Z
Last seen
Tags
None supplied

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.004 USDC
Atomic price: 4000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "4000",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E"
  }
]

Observed health

Status
Healthy
Latest latency
311 ms
Average latency
1313 ms
HTTP status
204
Last checked
Reachability
100% over 9 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": false,
      "properties": {
        "altitude_km": {
          "maximum": 2000,
          "minimum": 100,
          "type": "number"
        },
        "atmospheric_density_kg_m3": {
          "description": "Caller-supplied density at the modeled altitude.",
          "maximum": 1,
          "minimum": 0,
          "type": "number"
        },
        "ballistic_coefficient_kg_m2": {
          "description": "Mass divided by drag coefficient and reference area.",
          "maximum": 1000000000,
          "minimum": 0.000001,
          "type": "number"
        },
        "horizon_days": {
          "maximum": 36500,
          "minimum": 0,
          "type": "number"
        },
        "minimum_altitude_km": {
          "maximum": 2000,
          "minimum": 0,
          "type": "number"
        }
      },
      "required": [
        "altitude_km",
        "ballistic_coefficient_kg_m2",
        "atmospheric_density_kg_m3",
        "horizon_days",
        "minimum_altitude_km"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "altitude_km": {
              "maximum": 2000,
              "minimum": 100,
              "type": "number"
            },
            "atmospheric_density_kg_m3": {
              "description": "Caller-supplied density at the modeled altitude.",
              "maximum": 1,
              "minimum": 0,
              "type": "number"
            },
            "ballistic_coefficient_kg_m2": {
              "description": "Mass divided by drag coefficient and reference area.",
              "maximum": 1000000000,
              "minimum": 0.000001,
              "type": "number"
            },
            "horizon_days": {
              "maximum": 36500,
              "minimum": 0,
              "type": "number"
            },
            "minimum_altitude_km": {
              "maximum": 2000,
              "minimum": 0,
              "type": "number"
            }
          },
          "required": [
            "altitude_km",
            "ballistic_coefficient_kg_m2",
            "atmospheric_density_kg_m3",
            "horizon_days",
            "minimum_altitude_km"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}