From 31a9f54eff82964432818a3c6a3e9c62470adac8 Mon Sep 17 00:00:00 2001
From: Theodore Kruczek <theodore.kruczek@gmail.com>
Date: Fri, 27 Oct 2023 18:12:41 -0400
Subject: [PATCH] fix: :bug: fix getGroundTracks stopping short of antemeridian
 (#44)

fixes issue #43
---
 __tests__/sgp4.js | 3 ++-
 src/sgp4.js       | 4 +++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/__tests__/sgp4.js b/__tests__/sgp4.js
index b4df440..52c628e 100644
--- a/__tests__/sgp4.js
+++ b/__tests__/sgp4.js
@@ -324,7 +324,8 @@ describe("problematic TLES (geosync, decayed)", () => {
 			tle: tleStr,
 			startTimeMS: timestamp
 		});
-		expect(result.length).toEqual(6001);
+		// Time until it reaches the antemeridian
+		expect(result.length).toEqual(172809);
 	});
 
 	test("getGroundTracks", async () => {
diff --git a/src/sgp4.js b/src/sgp4.js
index 79a89bd..eeedc1f 100644
--- a/src/sgp4.js
+++ b/src/sgp4.js
@@ -390,11 +390,13 @@ export async function getOrbitTrack({
 	stepMS = 1000,
 	sleepMS = 0,
 	jobChunkSize = 1000,
-	maxTimeMS = 6000000,
+	maxTimeMS,
 	isLngLatFormat = true
 }) {
 	const { tle: tleArr } = parseTLE(tle);
 
+	maxTimeMS ??= getAverageOrbitTimeMS(tleArr) * 1.5;
+
 	const startS = (startTimeMS / 1000).toFixed();
 	const cacheKey = `${tleArr[0]}-${startS}-${stepMS}-${isLngLatFormat}`;
 	if (cachedOrbitTracks[cacheKey]) {