@elite-dangerous-almanac/core / astro / decodeModSystemAddress

decodeModSystemAddress(id64): DecodedAddress

Defined in: src/astro/system-address.ts:305

Decode a modulated system address into its geometric components.

SystemAddressInput

The 64-bit modulated system address, as a bigint, a safe-integer number, or a decimal string (see SystemAddressInput). A modulated address packs the sector into the high bits, so it routinely exceeds 2^53; those values must be supplied as a bigint or string because a JS number has already lost precision.

DecodedAddress

The decoded components (same shape as decodeSystemAddress).

The modulated form is an alternative bit-layout of the same system, used by some community tools and data dumps. If you have a normal id64 (the usual case — journal, EDSM, EDDN, Spansh all use it), reach for decodeSystemAddress instead; use this only when a source specifically hands you a modulated address.

If id64 is not a usable address representation.

If id64 is negative or does not fit in 64 bits.

import { decodeModSystemAddress } from '@elite-dangerous-almanac/core/astro/system-address';

declare const modAddressFromSomeTool: bigint;

decodeModSystemAddress(modAddressFromSomeTool).sectorGridPosition;
// -> { sectorX, sectorY, sectorZ }