diff --git a/modules/core/shared/src/main/scala/lucuma/core/math/Angle.scala b/modules/core/shared/src/main/scala/lucuma/core/math/Angle.scala
index 757c29b6e..6d528a39b 100644
--- a/modules/core/shared/src/main/scala/lucuma/core/math/Angle.scala
+++ b/modules/core/shared/src/main/scala/lucuma/core/math/Angle.scala
@@ -300,6 +300,26 @@ object Angle extends AngleOptics {
     def -(a: Angle): Angle =
       Angle.fromMicroarcseconds(toMicroarcseconds - a.toMicroarcseconds)
 
+    /**
+    * Scalar multiplication of this angle and and natural number `a`. Exact
+    * @group Operations
+    */
+    def *(a: Long): Angle = {
+      val µas = BigInt(toMicroarcseconds) * BigInt(a)
+      val µasʹ = (((µas % µasPer360) + µasPer360) % µasPer360).toLong
+      Angle.apply(µasʹ)
+    }
+
+    /**
+    * Scalar multiplication of this angle and double precission number `a`. Approximate
+    * @group Operations
+    */
+    def *(a: Double): Angle = {
+      val µas = toMicroarcseconds.toDouble * a
+      val µasʹ = (((µas % µasPer360) + µasPer360) % µasPer360).toLong
+      Angle.apply(µasʹ)
+    }
+
     /**
     * This angle as an Offset.P. Exact, invertible.
     *
diff --git a/modules/tests/shared/src/test/scala/lucuma/core/math/AngleSuite.scala b/modules/tests/shared/src/test/scala/lucuma/core/math/AngleSuite.scala
index 8a9f29aa5..d48b2bf5f 100644
--- a/modules/tests/shared/src/test/scala/lucuma/core/math/AngleSuite.scala
+++ b/modules/tests/shared/src/test/scala/lucuma/core/math/AngleSuite.scala
@@ -182,4 +182,27 @@ final class AngleSuite extends munit.DisciplineSuite {
       assertEquals(a.tan, scala.math.tan(a.toDoubleRadians))
     }
   }
+
+  test("Scalar int multiplication") {
+    assertEquals(Angle.Angle0 * 2, Angle.Angle0)
+    assertEquals(Angle.Angle90 * 2, Angle.Angle180)
+    assertEquals(Angle.Angle90 * 4, Angle.Angle0)
+    assertEquals(Angle.Angle90 * -2, Angle.Angle180)
+    assertEquals(Angle.Angle90 * 10, Angle.Angle180)
+    assertEquals(Angle.Angle90 * 4000000, Angle.Angle0)
+    // Check overflow
+    assertEquals(Angle.Angle90 * 40000000, Angle.Angle0)
+  }
+
+  test("Scalar double multiplication") {
+    assertEquals(Angle.Angle0 * 2.0, Angle.Angle0)
+    assertEquals(Angle.Angle90 * 2.0, Angle.Angle180)
+    assertEquals(Angle.Angle90 * 4.0, Angle.Angle0)
+    assertEquals(Angle.Angle90 * -2.0, Angle.Angle180)
+    assertEquals(Angle.Angle90 * 10.0, Angle.Angle180)
+    assertEquals(Angle.Angle180 * 0.5, Angle.Angle90)
+    assertEquals(Angle.Angle90 * 40000000.0, Angle.Angle0)
+    assert(((Angle.Angle180 * 0.001) - Angle.fromDoubleDegrees(0.18)).toMicroarcseconds < 1000)
+    assert(((Angle.Angle180 * -0.001) - Angle.fromDoubleDegrees(359.82)).toMicroarcseconds < 1000)
+  }
 }