Merge pull request #408 from observerly/refactor/constants/EARTH_RADIUS

refactor: amend EARTH_RADIUS in constants module in @observerly/astrometry
observerly · Jan 22, 2025 · 43f6a73 · 43f6a73
2 parents 0c815b9 + fc73d0f
commit 43f6a73
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/src/constants.ts b/src/constants.ts
@@ -11,7 +11,7 @@
  * The approximateed average radius of the Earth in meters.
  *
  */
-export const EARTH_RADIUS = 6.378e6 as const
+export const EARTH_RADIUS = 6.3781378e6 as const
 
 /*****************************************************************************************************************/
 

diff --git a/tests/observer.spec.ts b/tests/observer.spec.ts
@@ -33,7 +33,7 @@ describe('getLocalHorizon', () => {
   })
 
   it('should return a sensible value for an observer at altitude, h, 1000m (with no refraction correction)', () => {
-    expect(getLocalHorizon(elevation + 1000, 0)).toBe(1.0146012026926674)
+    expect(getLocalHorizon(elevation + 1000, 0)).toBeCloseTo(1.0146012026926674)
   })
 
   it('should return a sensible value for an observer at 1000m (with no refraction correction)', () => {
@@ -44,7 +44,7 @@ describe('getLocalHorizon', () => {
       elevation: 1000
     }
 
-    expect(getLocalHorizon(observer, 0)).toBe(1.0146012026926674)
+    expect(getLocalHorizon(observer, 0)).toBeCloseTo(1.0146012026926674)
   })
 
   it('should return a sensible value for an observer at altitude, h, 1000m', () => {