diff --git a/.gitignore b/.gitignore
index 405026c..3928069 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 .idea
 .vscode
 coverage
+commonjs
 lib
 node_modules
 *.log
diff --git a/README.md b/README.md
index b70fea6..b8061e9 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ console.log(sat.meanMoDev1); // Mean Motion Deviation 1
 console.log(sat.meanMoDev2); // Mean Motion Deviation 2
 console.log(sat.bstar); // Bstar (Drag Coefficient)
 console.log(sat.inclination); // inclination in degrees
-console.log(sat.raan); // right ascension of the ascending node in degrees
+console.log(sat.rightAscension); // right ascension of the ascending node in degrees
 console.log(sat.eccentricity); // eccentricity
 console.log(sat.argOfPerigee); // argument of perigee in degrees
 console.log(sat.meanAnomaly); // mean anomaly in degrees
diff --git a/examples/typescript/tle.ts b/examples/typescript/tle.ts
index 2fff466..77e8dc0 100644
--- a/examples/typescript/tle.ts
+++ b/examples/typescript/tle.ts
@@ -46,7 +46,7 @@ const tle = Tle.parse(tle1, tle2);
 //   meanMoDev2: 0,
 //   bstar: 0.000059442,
 //   inclination: 51.6433,
-//   raan: 59.2583,
+//   rightAscension: 59.2583,
 //   eccentricity: 0.0008217,
 //   argOfPerigee: 16.4489,
 //   meanAnomaly: 347.6017,
@@ -76,7 +76,7 @@ const tleAll = Tle.parseAll(tle1, tle2);
 //   checksum1: 2,
 //   lineNumber2: 2,
 //   inclination: 51.6433,
-//   raan: 59.2583,
+//   rightAscension: 59.2583,
 //   eccentricity: 0.0008217,
 //   argOfPerigee: 16.4489,
 //   meanAnomaly: 347.6017,
diff --git a/package.json b/package.json
index 72ab9e3..c561987 100644
--- a/package.json
+++ b/package.json
@@ -3,8 +3,8 @@
   "version": "1.0.0-0",
   "description": "Orbital Object Toolkit Core including SGP4 Propagator and Coordinate Transforms",
   "scripts": {
-    "mjs": "ttsc -p tsconfig.build.json && node ./scripts/moveMjs.mjs",
-    "cjs": "ttsc -p tsconfig.build.json -m commonjs",
+    "mjs": "ttsc -p tsconfig.build.json -m esnext",
+    "cjs": "ttsc -p tsconfig.c.json -m commonjs",
     "build": "node ./scripts/cleanup.mjs && npm run mjs && npm run cjs",
     "lint": "eslint src",
     "lint:fix": "eslint src --fix",
@@ -13,11 +13,12 @@
     "test:coverage": "jest --coverage",
     "version": "auto-changelog -p && git add CHANGELOG.md"
   },
-  "main": "./lib/ootk-core.js",
+  "main": "./lib/index.js",
   "exports": {
-    "import": "./lib/ootk-core.js",
-    "require": "./lib/ootk-core.js"
+    "import": "./lib/index.js",
+    "require": "./commonjs/index.js"
   },
+  "typings": "./lib/index.d.ts",
   "repository": {
     "type": "git",
     "url": "git://github.com/thkruz/ootk-core"
@@ -56,4 +57,4 @@
     "typescript-transform-paths": "^3.4.6"
   },
   "homepage": "https://github.com/thkruz/ootk"
-}
+}
\ No newline at end of file
diff --git a/scripts/moveMjs.mjs b/scripts/moveMjs.mjs
index 83e31bf..6be9a5f 100644
--- a/scripts/moveMjs.mjs
+++ b/scripts/moveMjs.mjs
@@ -1,4 +1,5 @@
-import { renameSync } from 'fs';
+import { cpSync, renameSync } from 'fs';
 
-renameSync('./lib/ootk-core.js', './lib/ootk-core.mjs');
-renameSync('./lib/ootk-core.js.map', './lib/ootk-core.mjs.map');
+renameSync('./lib/index.js', './lib/index.mjs');
+renameSync('./lib/index.js.map', './lib/index.mjs.map');
+cpSync('./lib/index.d.ts', './lib/index.d.mts');
diff --git a/src/body/Celestial.ts b/src/body/Celestial.ts
index 51f37c3..7642722 100644
--- a/src/body/Celestial.ts
+++ b/src/body/Celestial.ts
@@ -1,4 +1,4 @@
-import { AzEl, Degrees, RaDec, Radians } from '../ootk-core';
+import { AzEl, Degrees, RaDec, Radians } from '..';
 import { RAD2DEG } from '../utils/constants';
 import { Sun } from './Sun';
 
diff --git a/src/body/Earth.ts b/src/body/Earth.ts
index 5ce8bef..9765e0e 100644
--- a/src/body/Earth.ts
+++ b/src/body/Earth.ts
@@ -1,5 +1,5 @@
+import { AngularDiameterMethod, Kilometers, Radians } from '..';
 import { DataHandler } from '../data/DataHandler';
-import { AngularDiameterMethod, Kilometers, Radians } from '../ootk-core';
 import { Vector3D } from '../operations/Vector3D';
 import { EpochUTC } from '../time/EpochUTC';
 import { asec2rad, DEG2RAD, RAD2DEG, secondsPerDay, secondsPerSiderealDay, TAU, ttasec2rad } from '../utils/constants';
diff --git a/src/body/Moon.ts b/src/body/Moon.ts
index 7823fa9..2f2ab9d 100644
--- a/src/body/Moon.ts
+++ b/src/body/Moon.ts
@@ -38,7 +38,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
-import { AngularDiameterMethod, Celestial, Degrees, Kilometers, RaDec, Radians } from '../ootk-core';
+import { AngularDiameterMethod, Celestial, Degrees, Kilometers, RaDec, Radians } from '..';
 import { Vector3D } from '../operations/Vector3D';
 import { EpochUTC } from '../time/EpochUTC';
 import { DEG2RAD, MS_PER_DAY } from '../utils/constants';
diff --git a/src/body/NutationAngles.ts b/src/body/NutationAngles.ts
index 4edb2c7..dce2cc3 100644
--- a/src/body/NutationAngles.ts
+++ b/src/body/NutationAngles.ts
@@ -1,4 +1,4 @@
-import { Radians } from '../ootk-core';
+import { Radians } from '..';
 
 // / Earth nutation angles _(rad)_.
 export type NutationAngles = {
diff --git a/src/body/PrecessionAngles.ts b/src/body/PrecessionAngles.ts
index faf6d75..3a2ba27 100644
--- a/src/body/PrecessionAngles.ts
+++ b/src/body/PrecessionAngles.ts
@@ -1,4 +1,4 @@
-import { Radians } from '../ootk-core';
+import { Radians } from '..';
 
 // / Earth precession angles _(rad)_.
 export type PrecessionAngles = {
diff --git a/src/body/Sun.ts b/src/body/Sun.ts
index 9a847a5..09d93ff 100644
--- a/src/body/Sun.ts
+++ b/src/body/Sun.ts
@@ -1,4 +1,4 @@
-import { AngularDiameterMethod, AzEl, Degrees, Kilometers, Meters, RaDec, Radians, SunTime } from '../ootk-core';
+import { AngularDiameterMethod, AzEl, Degrees, Kilometers, Meters, RaDec, Radians, SunTime } from '..';
 import { Vector3D } from '../operations/Vector3D';
 import { EpochUTC } from '../time/EpochUTC';
 import { astronomicalUnit, cKmPerSec, DEG2RAD, MS_PER_DAY, RAD2DEG, TAU } from '../utils/constants';
diff --git a/src/coordinate/Geodetic.ts b/src/coordinate/Geodetic.ts
index 64d52a7..390e703 100644
--- a/src/coordinate/Geodetic.ts
+++ b/src/coordinate/Geodetic.ts
@@ -1,5 +1,5 @@
+import { AngularDistanceMethod } from '..';
 import { Earth } from '../body/Earth';
-import { AngularDistanceMethod } from '../ootk-core';
 import { Vector3D } from '../operations/Vector3D';
 import { EpochUTC } from '../time/EpochUTC';
 import { DEG2RAD, RAD2DEG } from '../utils/constants';
diff --git a/src/coordinate/TLE.ts b/src/coordinate/TLE.ts
index f399bcd..bf9a63f 100644
--- a/src/coordinate/TLE.ts
+++ b/src/coordinate/TLE.ts
@@ -25,16 +25,18 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+import { Sgp4, Vector3D } from '..';
 import { Earth } from '../body';
 import { ClassicalElements, FormatTle, TEME } from '../coordinate';
 import { Sgp4OpsMode } from '../enums/Sgp4OpsMode';
-import { Sgp4, Vector3D } from '../ootk-core';
 import { Sgp4GravConstants } from '../sgp4/sgp4';
 import { EpochUTC } from '../time/EpochUTC';
 import {
+  Degrees,
   EciVec3,
   Line1Data,
   Line2Data,
+  Minutes,
   SatelliteRecord,
   StateVectorSgp4,
   TleData,
@@ -123,7 +125,7 @@ export class Tle {
   /** The mean motion field. */
   private static readonly meanMo_ = new TleFormatData(53, 63);
   /** The right ascension of the ascending node field. */
-  private static readonly raan_ = new TleFormatData(18, 25);
+  private static readonly rightAscension_ = new TleFormatData(18, 25);
   /** The revolution number field. */
   private static readonly revNum_ = new TleFormatData(64, 68);
   /** The satellite number field. */
@@ -274,16 +276,16 @@ export class Tle {
    * Example: 69.9862
    *
    * @param {string} tleLine2 The second line of the Tle to parse.
-   * @returns {number} The argument of perigee in degrees.
+   * @returns {Degrees} The argument of perigee in degrees.
    */
-  static argOfPerigee(tleLine2: TleLine2): number {
+  static argOfPerigee(tleLine2: TleLine2): Degrees {
     const argPe = parseFloat(tleLine2.substring(Tle.argPerigee_.start, Tle.argPerigee_.stop));
 
     if (!(argPe >= 0 && argPe < 360)) {
       throw new Error(`Invalid argument of perigee: ${argPe}`);
     }
 
-    return toPrecision(argPe, 4);
+    return toPrecision(argPe, 4) as Degrees;
   }
 
   /**
@@ -494,16 +496,16 @@ export class Tle {
    * Example: 51.6400
    *
    * @param {string} tleLine2 The second line of the Tle to parse.
-   * @returns {number} The inclination of the satellite.
+   * @returns {Degrees} The inclination of the satellite.
    */
-  static inclination(tleLine2: TleLine2): number {
+  static inclination(tleLine2: TleLine2): Degrees {
     const inc = parseFloat(tleLine2.substring(Tle.inclination_.start, Tle.inclination_.stop));
 
     if (inc < 0 || inc > 180) {
       throw new Error(`Invalid inclination: ${inc}`);
     }
 
-    return toPrecision(inc, 4);
+    return toPrecision(inc, 4) as Degrees;
   }
 
   /**
@@ -585,16 +587,16 @@ export class Tle {
    * Example: 25.2906
    *
    * @param {string} tleLine2 The second line of the Tle to parse.
-   * @returns {number} The mean anomaly of the satellite.
+   * @returns {Degrees} The mean anomaly of the satellite.
    */
-  static meanAnomaly(tleLine2: TleLine2): number {
+  static meanAnomaly(tleLine2: TleLine2): Degrees {
     const meanA = parseFloat(tleLine2.substring(Tle.meanAnom_.start, Tle.meanAnom_.stop));
 
     if (!(meanA >= 0 && meanA <= 360)) {
       throw new Error(`Invalid mean anomaly: ${meanA}`);
     }
 
-    return toPrecision(meanA, 4);
+    return toPrecision(meanA, 4) as Degrees;
   }
 
   /**
@@ -669,10 +671,10 @@ export class Tle {
    * @param tleLine2 The Tle line 2.
    * @returns The period of the satellite orbit in minutes.
    */
-  static period(tleLine2: TleLine2): number {
+  static period(tleLine2: TleLine2): Minutes {
     const meanMo = Tle.meanMotion(tleLine2);
 
-    return 1440 / meanMo;
+    return (1440 / meanMo) as Minutes;
   }
 
   /**
@@ -687,16 +689,16 @@ export class Tle {
    * Example: 208.9163
    *
    * @param {string} tleLine2 The second line of the Tle to parse.
-   * @returns {number} The right ascension of the satellite.
+   * @returns {Degrees} The right ascension of the satellite.
    */
-  static rightAscension(tleLine2: TleLine2): number {
-    const raan = parseFloat(tleLine2.substring(Tle.raan_.start, Tle.raan_.stop));
+  static rightAscension(tleLine2: TleLine2): Degrees {
+    const rightAscension = parseFloat(tleLine2.substring(Tle.rightAscension_.start, Tle.rightAscension_.stop));
 
-    if (!(raan >= 0 && raan <= 360)) {
-      throw new Error(`Invalid RAAN: ${raan}`);
+    if (!(rightAscension >= 0 && rightAscension <= 360)) {
+      throw new Error(`Invalid Right Ascension: ${rightAscension}`);
     }
 
-    return toPrecision(raan, 4);
+    return toPrecision(rightAscension, 4) as Degrees;
   }
 
   /**
@@ -806,7 +808,7 @@ export class Tle {
     const satNum = Tle.satNum(tleLine2);
     const satNumRaw = Tle.rawSatNum(tleLine2);
     const inclination = Tle.inclination(tleLine2);
-    const raan = Tle.rightAscension(tleLine2);
+    const rightAscension = Tle.rightAscension(tleLine2);
     const eccentricity = Tle.eccentricity(tleLine2);
     const argOfPerigee = Tle.argOfPerigee(tleLine2);
     const meanAnomaly = Tle.meanAnomaly(tleLine2);
@@ -820,7 +822,7 @@ export class Tle {
       satNum,
       satNumRaw,
       inclination,
-      raan,
+      rightAscension,
       eccentricity,
       argOfPerigee,
       meanAnomaly,
@@ -868,7 +870,7 @@ export class Tle {
       meanMoDev2: line1.meanMoDev2,
       bstar: line1.bstar,
       inclination: line2.inclination,
-      raan: line2.raan,
+      rightAscension: line2.rightAscension,
       eccentricity: line2.eccentricity,
       argOfPerigee: line2.argOfPerigee,
       meanAnomaly: line2.meanAnomaly,
diff --git a/src/ootk-core.ts b/src/index.ts
similarity index 92%
rename from src/ootk-core.ts
rename to src/index.ts
index d4d7b4f..10310cc 100644
--- a/src/ootk-core.ts
+++ b/src/index.ts
@@ -31,16 +31,16 @@
  * SOFTWARE.
  */
 
-export * from './body';
+export { Celestial, Earth, Moon, Sun } from './body';
 export * from './coordinate';
 export { Tle } from './coordinate/Tle';
 export * from './data/DataHandler';
 export * from './enums';
 export * from './interfaces';
-export * from './objects';
+export { BaseObject, GroundPosition, Satellite, Sensor, Star } from './objects';
 export * from './observation';
 export * from './operations/operations';
-export { Sgp4 } from './sgp4/sgp4';
+export * from './sgp4';
 export * from './time/time';
 export * from './transforms';
 export * from './types/types';
diff --git a/src/interfaces/index.ts b/src/interfaces/index.ts
index 4c9fb64..325ff92 100644
--- a/src/interfaces/index.ts
+++ b/src/interfaces/index.ts
@@ -1,6 +1,6 @@
-export { BaseObjectParams } from './BaseObjectParams';
-export { GroundPositionParams } from './GroundPositionParams';
-export { OptionsParams } from './OptionsParams';
-export { SatelliteParams } from './SatelliteParams';
-export { SensorParams } from './SensorParams';
-export { StarObjectParams } from './StarObjectParams';
+export type { BaseObjectParams } from './BaseObjectParams';
+export type { GroundPositionParams } from './GroundPositionParams';
+export type { OptionsParams } from './OptionsParams';
+export type { SatelliteParams } from './SatelliteParams';
+export type { SensorParams } from './SensorParams';
+export type { StarObjectParams } from './StarObjectParams';
diff --git a/src/objects/Satellite.ts b/src/objects/Satellite.ts
index 6d29bc5..5e8d8a5 100644
--- a/src/objects/Satellite.ts
+++ b/src/objects/Satellite.ts
@@ -47,6 +47,7 @@ import {
   GreenwichMeanSiderealTime,
   Kilometers,
   LlaVec3,
+  Minutes,
   PosVel,
   Radians,
   RaeVec3,
@@ -68,23 +69,23 @@ import { GroundPosition } from './GroundPosition';
  * Represents a satellite object with orbital information and methods for calculating its position and other properties.
  */
 export class Satellite extends BaseObject {
-  apogee: number;
-  argOfPerigee: number;
+  apogee: Kilometers;
+  argOfPerigee: Degrees;
   bstar: number;
   eccentricity: number;
   epochDay: number;
   epochYear: number;
-  inclination: number;
+  inclination: Degrees;
   intlDes: string;
-  meanAnomaly: number;
+  meanAnomaly: Degrees;
   meanMoDev1: number;
   meanMoDev2: number;
   meanMotion: number;
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   options: OptionsParams;
-  perigee: number;
-  period: number;
-  raan: number;
+  perigee: Kilometers;
+  period: Minutes;
+  rightAscension: Degrees;
   satrec: SatelliteRecord;
   /**
    * The satellite catalog number as listed in the TLE.
@@ -100,6 +101,14 @@ export class Satellite extends BaseObject {
   sccNum6: string;
   tle1: TleLine1;
   tle2: TleLine2;
+  /**
+   * The semi-major axis of the satellite's orbit.
+   */
+  semiMajorAxis: Kilometers;
+  /**
+   * The semi-minor axis of the satellite's orbit.
+   */
+  semiMinorAxis: Kilometers;
 
   constructor(info: SatelliteParams, options?: OptionsParams) {
     super(info);
@@ -109,26 +118,31 @@ export class Satellite extends BaseObject {
     this.tle1 = info.tle1;
     this.tle2 = info.tle2;
 
-    this.sccNum = info.sccNum || tleData.satNum.toString();
+    this.sccNum = info.sccNum ?? tleData.satNum.toString();
     this.sccNum5 = Tle.convert6DigitToA5(this.sccNum);
     this.sccNum6 = Tle.convertA5to6Digit(this.sccNum5);
+    this.intlDes = tleData.intlDes;
     this.epochYear = tleData.epochYear;
     this.epochDay = tleData.epochDay;
     this.meanMoDev1 = tleData.meanMoDev1;
     this.meanMoDev2 = tleData.meanMoDev2;
     this.bstar = tleData.bstar;
     this.inclination = tleData.inclination;
-    this.raan = tleData.raan;
+    this.rightAscension = tleData.rightAscension;
     this.eccentricity = tleData.eccentricity;
     this.argOfPerigee = tleData.argOfPerigee;
     this.meanAnomaly = tleData.meanAnomaly;
     this.meanMotion = tleData.meanMotion;
     this.period = tleData.period;
+    this.semiMajorAxis = ((8681663.653 / this.meanMotion) ** (2 / 3)) as Kilometers;
+    this.semiMinorAxis = (this.semiMajorAxis * Math.sqrt(1 - this.eccentricity ** 2)) as Kilometers;
+    this.apogee = (this.semiMajorAxis * (1 + this.eccentricity) - 6371) as Kilometers;
+    this.perigee = (this.semiMajorAxis * (1 - this.eccentricity) - 6371) as Kilometers;
 
     // NOTE: Calculate apogee and perigee
 
     this.satrec = Sgp4.createSatrec(info.tle1, info.tle2);
-    this.options = options || {
+    this.options = options ?? {
       notes: '',
     };
   }
@@ -203,6 +217,10 @@ export class Satellite extends BaseObject {
    */
   eci(date: Date = this.time): PosVel<Kilometers> {
     const { m } = Satellite.calculateTimeVariables(date, this.satrec);
+
+    if (!m) {
+      throw new Error('Propagation failed!');
+    }
     const pv = Sgp4.propagate(this.satrec, m);
 
     if (!pv) {
@@ -221,6 +239,10 @@ export class Satellite extends BaseObject {
    */
   getJ2000(date: Date = this.time): J2000 {
     const { m } = Satellite.calculateTimeVariables(date, this.satrec);
+
+    if (!m) {
+      throw new Error('Propagation failed!');
+    }
     const pv = Sgp4.propagate(this.satrec, m);
 
     if (!pv.position) {
@@ -319,7 +341,7 @@ export class Satellite extends BaseObject {
   private static calculateTimeVariables(
     date: Date,
     satrec?: SatelliteRecord,
-  ): { gmst: GreenwichMeanSiderealTime; m: number; j: number } {
+  ): { gmst: GreenwichMeanSiderealTime; m: number | null; j: number } {
     const j =
       jday(
         date.getUTCFullYear(),
diff --git a/src/observation/RAE.ts b/src/observation/RAE.ts
index ccebf08..e661eb2 100644
--- a/src/observation/RAE.ts
+++ b/src/observation/RAE.ts
@@ -1,8 +1,8 @@
 /* eslint-disable no-undefined */
+import { Radians } from '..';
 import { ITRF } from '../coordinate/ITRF';
 import { J2000 } from '../coordinate/J2000';
 import { AngularDistanceMethod } from '../enums/AngularDistanceMethod';
-import { Radians } from '../ootk-core';
 import { Vector3D } from '../operations/Vector3D';
 import { EpochUTC } from '../time/EpochUTC';
 import { DEG2RAD, halfPi, RAD2DEG, TAU } from '../utils/constants';
diff --git a/src/operations/Vector3D.ts b/src/operations/Vector3D.ts
index 6bb7cc9..87f560b 100644
--- a/src/operations/Vector3D.ts
+++ b/src/operations/Vector3D.ts
@@ -1,4 +1,4 @@
-import { linearDistance } from '../ootk-core';
+import { linearDistance } from '..';
 import { Matrix } from './Matrix';
 import { Vector } from './Vector';
 
diff --git a/src/sgp4/index.ts b/src/sgp4/index.ts
new file mode 100644
index 0000000..b54dc44
--- /dev/null
+++ b/src/sgp4/index.ts
@@ -0,0 +1 @@
+export { Sgp4 } from './sgp4';
diff --git a/src/sgp4/sgp4.ts b/src/sgp4/sgp4.ts
index 2f448bb..5d148c5 100644
--- a/src/sgp4/sgp4.ts
+++ b/src/sgp4/sgp4.ts
@@ -110,7 +110,7 @@ export enum Sgp4GravConstants {
  *                           original baseline
  *       ----------------------------------------------------------------
  */
-class Sgp4 {
+export class Sgp4 {
   // Dot
 
   /*
@@ -238,7 +238,7 @@ class Sgp4 {
     let year = 0;
 
     const satrec = {
-      a: null,
+      a: null as number | null,
       am: null,
       alta: null,
       altp: null,
@@ -263,7 +263,7 @@ class Sgp4 {
       em: null,
       epochdays: null,
       epochyr: null,
-      error: null,
+      error: null as number | null,
       eta: null,
       gsto: null,
       im: null,
@@ -285,7 +285,7 @@ class Sgp4 {
       Om: null,
       omgcof: null,
       operationmode: null,
-      satnum: null,
+      satnum: null as string | null,
       sinmao: null,
       t: null,
       t2cof: null,
@@ -4119,5 +4119,3 @@ class Sgp4 {
    * Invjday
    */
 }
-
-export { Sgp4 };
diff --git a/src/transforms/conversions.ts b/src/transforms/conversions.ts
index 2792ea9..2edf9c0 100644
--- a/src/transforms/conversions.ts
+++ b/src/transforms/conversions.ts
@@ -1,4 +1,4 @@
-import { Degrees, Radians } from '../ootk-core';
+import { Degrees, Radians } from '..';
 import { DEG2RAD, PI, RAD2DEG } from '../utils/constants';
 
 /**
diff --git a/src/transforms/transforms.ts b/src/transforms/transforms.ts
index d17fcc6..87d9b20 100644
--- a/src/transforms/transforms.ts
+++ b/src/transforms/transforms.ts
@@ -28,7 +28,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
-import { Earth, Sensor, Sgp4 } from '../ootk-core';
+import { Earth, Sensor, Sgp4 } from '..';
 import {
   Degrees,
   EcefVec3,
diff --git a/src/types/types.ts b/src/types/types.ts
index b769aca..1fc7655 100644
--- a/src/types/types.ts
+++ b/src/types/types.ts
@@ -514,7 +514,7 @@ export type Line1Data = {
  * - satNum: The satellite number.
  * - satNumRaw: The raw string representation of the satellite number.
  * - inclination: The inclination of the satellite's orbit.
- * - raan: The Right Ascension of the Ascending Node.
+ * - rightAscension: The Right Ascension of the Ascending Node.
  * - eccentricity: The eccentricity of the satellite's orbit.
  * - argOfPerigee: The argument of perigee.
  * - meanAnomaly: The mean anomaly of the satellite.
@@ -529,15 +529,15 @@ export type Line2Data = {
   lineNumber2: number;
   satNum: number;
   satNumRaw: string;
-  inclination: number;
-  raan: number;
+  inclination: Degrees;
+  rightAscension: Degrees;
   eccentricity: number;
-  argOfPerigee: number;
-  meanAnomaly: number;
+  argOfPerigee: Degrees;
+  meanAnomaly: Degrees;
   meanMotion: number;
   revNum: number;
   checksum2: number;
-  period: number;
+  period: Minutes;
 };
 
 /**
@@ -693,13 +693,13 @@ export type TleData = {
   meanMoDev1: number;
   meanMoDev2: number;
   bstar: number;
-  inclination: number;
-  raan: number;
+  inclination: Degrees;
+  rightAscension: Degrees;
   eccentricity: number;
-  argOfPerigee: number;
-  meanAnomaly: number;
+  argOfPerigee: Degrees;
+  meanAnomaly: Degrees;
   meanMotion: number;
-  period: number;
+  period: Minutes;
 };
 /**
  * Represents a set of data containing both Line 1 and Line 2 TLE information.
diff --git a/test/sat/sat.test.ts b/test/sat/sat.test.ts
index c63b32b..161ee6e 100644
--- a/test/sat/sat.test.ts
+++ b/test/sat/sat.test.ts
@@ -18,7 +18,7 @@ describe('Basic Satellite functionality', () => {
 
     expect(sat).toBeDefined();
     expect(sat.inclination).toBe(51.6415);
-    expect(sat.raan).toBe(161.8339);
+    expect(sat.rightAscension).toBe(161.8339);
     expect(sat.satrec).toBeDefined();
   });
 
diff --git a/test/tle/tle.test.ts b/test/tle/tle.test.ts
index ce1560b..6fc4e4c 100644
--- a/test/tle/tle.test.ts
+++ b/test/tle/tle.test.ts
@@ -96,7 +96,7 @@ describe('Valid TLEs', () => {
       });
 
       it('should parse right ascension of ascending node', () => {
-        expect(Tle.rightAscension(testCase.line2)).toBe(testCase.raan);
+        expect(Tle.rightAscension(testCase.line2)).toBe(testCase.rightAscension);
       });
 
       it('should parse eccentricity', () => {
@@ -129,7 +129,7 @@ describe('Valid TLEs', () => {
           satNum: testCase.satNum,
           satNumRaw: testCase.satNumRaw,
           inclination: testCase.inclination,
-          raan: testCase.raan,
+          rightAscension: testCase.rightAscension,
           eccentricity: testCase.eccentricity,
           argOfPerigee: testCase.argOfPerigee,
           meanAnomaly: testCase.meanAnomaly,
@@ -152,7 +152,7 @@ describe('Valid TLEs', () => {
             meanMoDev2: testCase.meanMoDev2,
             bstar: testCase.bstar,
             inclination: testCase.inclination,
-            raan: testCase.raan,
+            rightAscension: testCase.rightAscension,
             eccentricity: testCase.eccentricity,
             argOfPerigee: testCase.argOfPerigee,
             meanAnomaly: testCase.meanAnomaly,
@@ -183,7 +183,7 @@ describe('Valid TLEs', () => {
             ephemerisType: testCase.ephemerisType,
             elsetNum: testCase.elsetNum,
             inclination: testCase.inclination,
-            raan: testCase.raan,
+            rightAscension: testCase.rightAscension,
             eccentricity: testCase.eccentricity,
             argOfPerigee: testCase.argOfPerigee,
             meanAnomaly: testCase.meanAnomaly,
diff --git a/test/tle/tleData.ts b/test/tle/tleData.ts
index e4e75f6..c9751fa 100644
--- a/test/tle/tleData.ts
+++ b/test/tle/tleData.ts
@@ -25,7 +25,7 @@ export const tleData = [
     satNum2: 25544,
     satNumRaw2: '25544',
     inclination: 51.6415,
-    raan: 161.8339,
+    rightAscension: 161.8339,
     eccentricity: 0.0005168,
     argOfPerigee: 35.9781,
     meanAnomaly: 54.7009,
@@ -58,7 +58,7 @@ export const tleData = [
     satNum2: 25544,
     satNumRaw2: '25544',
     inclination: 51.6416,
-    raan: 247.4627,
+    rightAscension: 247.4627,
     eccentricity: 0.0006703,
     argOfPerigee: 130.536,
     meanAnomaly: 325.0288,
@@ -92,7 +92,7 @@ export const tleData = [
     satNum2: 900,
     satNumRaw2: '00900',
     inclination: 90.1732,
-    raan: 41.6064,
+    rightAscension: 41.6064,
     eccentricity: 0.0024845,
     argOfPerigee: 267.8011,
     meanAnomaly: 122.0949,
@@ -126,7 +126,7 @@ export const tleData = [
     satNum2: 103712,
     satNumRaw2: 'A3712',
     inclination: 13.5389,
-    raan: 14.0082,
+    rightAscension: 14.0082,
     eccentricity: 0.0001997,
     argOfPerigee: 133.0685,
     meanAnomaly: 227.0577,
diff --git a/tsconfig.build.json b/tsconfig.build.json
index 8058585..db4cf6a 100644
--- a/tsconfig.build.json
+++ b/tsconfig.build.json
@@ -6,12 +6,12 @@
   "compilerOptions": {
     "outDir": "./lib" /* Redirect output structure to the directory. */,
     "target": "ES2022",
-    "module": "ES2015",
+    "module": "ESNext",
     "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
-    "plugins": [{ "transform": "typescript-transform-paths" }]
+    "plugins": [{ "transform": "typescript-transform-paths" }],
+    "declaration": true,
+    "isolatedModules": true
   },
   "include": ["./src/**/*.ts"],
-  "filesGlob": ["./src/**/*.ts"],
-  "ignorePatterns": ["./src/sgp4/asc/**/*.ts"],
-  "exclude": ["./src/sgp4/asc/assembly/index.ts"]
+  "filesGlob": ["./src/**/*.ts"]
 }
diff --git a/tsconfig.c.json b/tsconfig.c.json
new file mode 100644
index 0000000..3c3a77c
--- /dev/null
+++ b/tsconfig.c.json
@@ -0,0 +1,17 @@
+/**
+ * This is the tsconfig extension that only applies to webpack.
+ */
+{
+  "extends": "./tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "./commonjs" /* Redirect output structure to the directory. */,
+    "target": "ES2022",
+    "module": "CommonJS",
+    "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
+    "plugins": [{ "transform": "typescript-transform-paths" }],
+    "declaration": true,
+    "isolatedModules": true
+  },
+  "include": ["./src/**/*.ts"],
+  "filesGlob": ["./src/**/*.ts"]
+}
diff --git a/tsconfig.json b/tsconfig.json
index 55ef227..a874b52 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,7 +4,8 @@
 {
   "extends": "./tsconfig.base.json",
   "compilerOptions": {
-    "noEmit": true
+    "noEmit": true,
+    "strict": true
   },
   "include": ["./src/**/*.ts", "./test/**/*.ts"],
   "filesGlob": ["./src/**/*.ts", "./test/**/*.ts"],