Object height for a target range

Code snippets

curl "https://api.oanor.com/horizon-api/v1/object-height" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/horizon-api/v1/object-height", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/horizon-api/v1/object-height");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/horizon-api/v1/object-height",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Turning the geographic-range formula around: the object height needed to be seen at a target range = (range ÷ 1.169 − √eye_height)², in feet. It is how tall a tower, light or headland must stand to break the horizon at the distance you want — or, the other way, how close you must be before a known landmark of a given height appears.",
        "inputs": {
            "range_nm": 15.2,
            "eye_height_ft": 9
        },
        "object_height_ft": 100.05
    },
    "meta": {
        "timestamp": "2026-06-07T08:17:58.683Z",
        "request_id": "17f0caa9-ae57-4285-966c-23e871e0eb23"
    },
    "status": "ok",
    "message": "Object height",
    "success": true
}