diff --git a/src/coordinate/RelativeState.ts b/src/coordinate/RelativeState.ts
index 3c7dc21..52d6847 100644
--- a/src/coordinate/RelativeState.ts
+++ b/src/coordinate/RelativeState.ts
@@ -69,8 +69,8 @@ export abstract class RelativeState {
    * Calculates the range of the relative state.
    * @returns The range in kilometers.
    */
-  range(): Kilometers {
-    return this.position.magnitude() as Kilometers;
+  get range(): Kilometers {
+    return this.position.magnitude();
   }
 
   /**
@@ -79,7 +79,7 @@ export abstract class RelativeState {
    *
    * @returns The range rate in Kilometers per second.
    */
-  rangeRate(): number {
-    return this.position.dot(this.velocity) / this.range();
+  get rangeRate(): number {
+    return this.position.dot(this.velocity) / this.range;
   }
 }
diff --git a/test/coordinate/RIC.test.ts b/test/coordinate/RIC.test.ts
index 9bba0d9..8d457f3 100644
--- a/test/coordinate/RIC.test.ts
+++ b/test/coordinate/RIC.test.ts
@@ -80,4 +80,28 @@ describe('RIC', () => {
 
     expect(name).toMatchSnapshot();
   });
+
+  // toString
+  it('should return a string representation of the RIC coordinate', () => {
+    const ric = new RIC(stateVector.position, stateVector.velocity);
+    const string = ric.toString();
+
+    expect(string).toMatchSnapshot();
+  });
+
+  // range
+  it('should return the range of the RIC coordinate', () => {
+    const ric = new RIC(stateVector.position, stateVector.velocity);
+    const range = ric.range;
+
+    expect(range).toMatchSnapshot();
+  });
+
+  // rangeRate
+  it('should return the range rate of the RIC coordinate', () => {
+    const ric = new RIC(stateVector.position, stateVector.velocity);
+    const rangeRate = ric.rangeRate;
+
+    expect(rangeRate).toMatchSnapshot();
+  });
 });
diff --git a/test/coordinate/__snapshots__/RIC.test.ts.snap b/test/coordinate/__snapshots__/RIC.test.ts.snap
index ac93284..d8e3935 100644
--- a/test/coordinate/__snapshots__/RIC.test.ts.snap
+++ b/test/coordinate/__snapshots__/RIC.test.ts.snap
@@ -32,6 +32,16 @@ RIC {
 
 exports[`RIC should get the name of the RIC coordinate system 1`] = `"RIC"`;
 
+exports[`RIC should return a string representation of the RIC coordinate 1`] = `
+"[RIC]
+  Position: [1538.223336, 5102.261204, 4432.634965] km
+  Velocity: [-7.341518909, 0.651671845, 1.793388250] km/s"
+`;
+
+exports[`RIC should return the range of the RIC coordinate 1`] = `6931.627020979389`;
+
+exports[`RIC should return the range rate of the RIC coordinate 1`] = `-0.002663194316531782`;
+
 exports[`RIC should transform the current RIC coordinate to J2000 using the provided origin and transform matrix 1`] = `
 J2000 {
   "epoch": EpochUTC {