Version 2.0.1.

CHANGELOG.md

@@ -1,6 +1,11 @@
 ## Changelog
 
-### 2.0.0
+### 2.0.1 (2018-03-01)
+
+- `sgp4` function's call result is used in `sgp4init`.
+- Longitude of `eciToGeodetic` result is in [-PI; PI] range now.
+
+### 2.0.0 (2017-12-23)
 
 - Library became ES and Common.js compatible.
 - Source code is reorganized to match [original Python library](https://pypi.python.org/pypi/sgp4/).

README.md

@@ -214,7 +214,7 @@ npm run lint:test
 ```
 
 Implementing new functions or features, please, if possible, provide tests to cover them and mention your works
-in [Changelog](#CHANGELOG).
+in [Changelog](CHANGELOG.md).
 
 In order to get test code coverage run the following:
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "satellite.js",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "SGP4/SDP4 calculation library",
   "main": "lib/index.js",
   "jsnext:main": "dist/satellite.es.js",

src/propagation/sgp4init.js

@@ -643,10 +643,11 @@ export default function sgp4init(satrec, options) {
     // sgp4fix take out check to let satellites process until they are actually below earth surface
     // if(rec.error == 0)
   }
-  sgp4(rec, 0.0);
 
-  rec.init = 'n';
+  const { satrec: resultRec } = sgp4(rec, 0.0);
 
-  // rec.error contains any error codes
-  return rec;
+  resultRec.init = 'n';
+
+  // resultRec.error contains any error codes
+  return resultRec;
 }

src/transforms.js

@@ -1,5 +1,6 @@
 import {
   pi,
+  twoPi,
   rad2deg,
 } from './constants';
 
@@ -52,7 +53,15 @@ export function eciToGeodetic(eciCoords, gmst) {
   const R = Math.sqrt((eciCoords.x * eciCoords.x) + (eciCoords.y * eciCoords.y));
   const f = (a - b) / a;
   const e2 = ((2 * f) - (f * f));
-  const longitude = Math.atan2(eciCoords.y, eciCoords.x) - gmst;
+
+  let longitude = Math.atan2(eciCoords.y, eciCoords.x) - gmst;
+  while (longitude < -pi) {
+    longitude += twoPi;
+  }
+  while (longitude > pi) {
+    longitude -= twoPi;
+  }
+
   const kmax = 20;
   let k = 0;
   let latitude = Math.atan2(