diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36de35d..939b026 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,10 +4,18 @@ All notable changes to this project will be documented in this file. Dates are d
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
-#### [v1.0.0](https://github.com/thkruz/ootk-core/compare/v1.0.0-5...v1.0.0)
+#### [v1.0.1](https://github.com/thkruz/ootk-core/compare/v1.0.0...v1.0.1)
 
 
 
+- refactor: :label: add more typing for Seconds in Epoch calculations [`0419a86`](https://github.com/thkruz/ootk-core/commit/0419a86e4eaa8e29f2281bbee3b3b01f559ec7f4)
+- refactor: :label: improve type support in Vector3D [`e3d3e3a`](https://github.com/thkruz/ootk-core/commit/e3d3e3a1abcd3fcb2832b1cce4d0e40e41db2d35)
+
+### [v1.0.0](https://github.com/thkruz/ootk-core/compare/v1.0.0-5...v1.0.0)
+
+> 15 January 2024
+
+
 - refactor: :recycle: standardize rng az el syntax [`59f7f53`](https://github.com/thkruz/ootk-core/commit/59f7f53c497d75bda2bf049c20e67d5191d586d7)
 - build: :memo: add auto changelog [`8abc50c`](https://github.com/thkruz/ootk-core/commit/8abc50cd4eb4b437cbea0ccaad9df5853257c386)
 - docs: :memo: update examples [`f27b230`](https://github.com/thkruz/ootk-core/commit/f27b230dfa0fb7440a81859b4057ab8d21b97ed6)
diff --git a/package-lock.json b/package-lock.json
index 529b5bd..a0db7b0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "ootk-core",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ootk-core",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "devDependencies": {
         "@babel/core": "^7.23.7",
diff --git a/package.json b/package.json
index 7a46538..4fea60c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ootk-core",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "type": "module",
   "module": "dist/main.js",
   "description": "Orbital Object Toolkit. A modern typed replacement for satellite.js including SGP4 propagation, TLE parsing, Sun and Moon calculations, and more.",
diff --git a/src/body/Sun.ts b/src/body/Sun.ts
index 0eb4ed9..2324b21 100644
--- a/src/body/Sun.ts
+++ b/src/body/Sun.ts
@@ -51,6 +51,7 @@ import {
   RAD2DEG,
   RaDec,
   Radians,
+  Seconds,
   SunTime,
   TAU,
   Vector3D,
@@ -522,7 +523,7 @@ export class Sun {
     const distance = Sun.position(epoch).magnitude();
     const dSec = distance / cKmPerSec;
 
-    return Sun.position(epoch.roll(-dSec));
+    return Sun.position(epoch.roll(-dSec as Seconds));
   }
 
   /**
diff --git a/src/coordinate/Tle.ts b/src/coordinate/Tle.ts
index 578fb76..ac45a7a 100644
--- a/src/coordinate/Tle.ts
+++ b/src/coordinate/Tle.ts
@@ -222,7 +222,7 @@ export class Tle {
     }
     const days = parseFloat(epochStr.substring(2, 14)) - 1;
 
-    return EpochUTC.fromDateTimeString(`${year}-01-01T00:00:00.000Z`).roll(days * secondsPerDay);
+    return EpochUTC.fromDateTimeString(`${year}-01-01T00:00:00.000Z`).roll(days * secondsPerDay as Seconds);
   }
 
   /**
diff --git a/src/operations/Vector3D.ts b/src/operations/Vector3D.ts
index 5431b2e..16fbe61 100644
--- a/src/operations/Vector3D.ts
+++ b/src/operations/Vector3D.ts
@@ -21,7 +21,7 @@
  * SOFTWARE.
  */
 
-import { Kilometers, Radians, linearDistance } from '../main';
+import { Radians, linearDistance } from '../main';
 import { Matrix } from './Matrix';
 import { Vector } from './Vector';
 
@@ -125,13 +125,13 @@ export class Vector3D<T extends number = number> {
   }
 
   // / Return a copy of this [Vector3D] scaled by [n];
-  scale(n: number): Vector3D {
-    return new Vector3D(this.x * n, this.y * n, this.z * n);
+  scale(n: number): Vector3D<T> {
+    return new Vector3D<T>(this.x * n as T, this.y * n as T, this.z * n as T);
   }
 
   // / Return a copy of this [Vector3D] with the elements negated.
-  negate(): Vector3D<Kilometers> {
-    return this.scale(-1) as Vector3D<Kilometers>;
+  negate(): Vector3D<T> {
+    return this.scale(-1);
   }
 
   /**
@@ -139,7 +139,7 @@ export class Vector3D<T extends number = number> {
    * @param v The other Vector3D.
    * @returns The distance between this and the other Vector3D.
    */
-  distance(v: Vector3D): number {
+  distance(v: Vector3D<T>): T {
     return linearDistance(this, v);
   }
 
@@ -147,14 +147,14 @@ export class Vector3D<T extends number = number> {
    * Convert this to a unit Vector3D.
    * @returns A unit Vector3D.
    */
-  normalize(): Vector3D {
+  normalize(): Vector3D<T> {
     const m = this.magnitude();
 
     if (m === 0) {
-      return Vector3D.origin;
+      return Vector3D.origin as Vector3D<T>;
     }
 
-    return new Vector3D(this.x / m, this.y / m, this.z / m);
+    return new Vector3D<T>(this.x / m as T, this.y / m as T, this.z / m as T);
   }
 
   // Calculate the dot product of this and another [Vector3D].
@@ -259,7 +259,7 @@ export class Vector3D<T extends number = number> {
   }
 
   // / Return the unit vector that bisects this and another [Vector3D].
-  bisect(v: Vector3D): Vector3D {
+  bisect(v: Vector3D<T>): Vector3D<T> {
     return this.scale(v.magnitude()).add(v.scale(this.magnitude())).normalize();
   }
 
diff --git a/src/time/EpochGPS.ts b/src/time/EpochGPS.ts
index 2d33913..f18e2a0 100644
--- a/src/time/EpochGPS.ts
+++ b/src/time/EpochGPS.ts
@@ -21,6 +21,7 @@
  * SOFTWARE.
  */
 
+import { Seconds } from '../main';
 import { DataHandler } from '../data/DataHandler';
 import { secondsPerWeek } from '../utils/constants';
 import type { EpochUTC } from './EpochUTC';
@@ -49,7 +50,7 @@ export class EpochGPS {
   static reference: EpochUTC;
 
   // / GPS leap second difference from TAI/UTC offsets.
-  static offset = 19;
+  static offset = 19 as Seconds;
 
   // / Get GPS week accounting for 10-bit rollover.
   get week10Bit(): number {
@@ -67,9 +68,9 @@ export class EpochGPS {
 
   // / Convert this to a UTC epoch.
   toUTC(): EpochUTC {
-    const init = EpochGPS.reference.roll(this.week * secondsPerWeek + this.seconds);
+    const init = EpochGPS.reference.roll((this.week * secondsPerWeek + this.seconds) as Seconds);
     const ls = DataHandler.getInstance().getLeapSeconds(init.toJulianDate());
 
-    return init.roll(-(ls - EpochGPS.offset));
+    return init.roll(-(ls - EpochGPS.offset) as Seconds);
   }
 }
diff --git a/src/time/EpochUTC.ts b/src/time/EpochUTC.ts
index d91e756..7e0b0d4 100644
--- a/src/time/EpochUTC.ts
+++ b/src/time/EpochUTC.ts
@@ -21,6 +21,7 @@
  * SOFTWARE.
  */
 
+import { Seconds } from '../main';
 import { DEG2RAD, MS_PER_DAY, RAD2DEG, secondsPerWeek, TAU } from '../utils/constants';
 import { evalPoly } from '../utils/functions';
 import { DataHandler } from './../data/DataHandler';
@@ -67,11 +68,11 @@ export class EpochUTC extends Epoch {
     return new EpochUTC(new Date(dts).getTime() / 1000);
   }
 
-  static fromJ2000TTSeconds(seconds: number): EpochUTC {
+  static fromJ2000TTSeconds(seconds: Seconds): EpochUTC {
     const tInit = new EpochUTC(seconds + 946728000);
     const ls = DataHandler.getInstance().getLeapSeconds(tInit.toJulianDate());
 
-    return tInit.roll(-32.184 - ls);
+    return tInit.roll(-32.184 - ls as Seconds);
   }
 
   static fromDefinitiveString(definitiveString: string): EpochUTC {
@@ -87,7 +88,7 @@ export class EpochUTC extends Epoch {
     return new EpochUTC(dts / 1000);
   }
 
-  roll(seconds: number): EpochUTC {
+  roll(seconds: Seconds): EpochUTC {
     return new EpochUTC(this.posix + seconds);
   }
 
@@ -121,7 +122,7 @@ export class EpochUTC extends Epoch {
   toGPS(): EpochGPS {
     const referenceTime = EpochUTC.fromDateTimeString('1980-01-06T00:00:00.000Z');
     const ls = DataHandler.getInstance().getLeapSeconds(this.toJulianDate());
-    const delta = this.roll(ls - EpochGPS.offset).difference(referenceTime);
+    const delta = this.roll(ls - EpochGPS.offset as Seconds).difference(referenceTime);
     const week = delta / secondsPerWeek;
     const weekFloor = Math.floor(week);
     const seconds = (week - weekFloor) * secondsPerWeek;
diff --git a/tsconfig.base.json b/tsconfig.base.json
index 37b336f..42c59b8 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -7,8 +7,6 @@
     "module": "es6",
     "lib": ["esnext"],
     "declaration": true,
-    // "noImplicitAny": true,
-    // "removeComments": true,
     "baseUrl": ".",
     "allowJs": true,
     "experimentalDecorators": true,
@@ -17,7 +15,6 @@
     "listFiles": true,
     "newLine": "LF",
     "skipLibCheck": true,
-    // "noEmitOnError": true,
     "types": ["jest", "node"],
     "moduleResolution": "Node",
     "esModuleInterop": true
diff --git a/tsconfig.json b/tsconfig.json
index a874b52..750919a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -9,6 +9,4 @@
   },
   "include": ["./src/**/*.ts", "./test/**/*.ts"],
   "filesGlob": ["./src/**/*.ts", "./test/**/*.ts"],
-  "ignorePatterns": ["./src/sgp4/asc/**/*.ts"],
-  "exclude": ["./src/sgp4/asc/assembly/index.ts"]
 }