Fixing last Moon issues

Signed-off-by: Cédric Foellmi <cedric@onekiloparsec.dev>
onekiloparsec · Apr 24, 2024 · 9524157 · 9524157
1 parent 281796f
commit 9524157
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/earth/moon/details.ts b/src/earth/moon/details.ts
@@ -40,7 +40,7 @@ export function getPhaseAngle (jd: JulianDay): Degree {
  const Delta: Kilometer = getRadiusVectorInKilometer(jd) // kilometer!!!
  // Distance Earth-Sun
  const R: Kilometer = getEarthRadiusVector(jd) * ONE_UA_IN_KILOMETERS
- return Math.atan2(R * Math.sin(psi), Delta - (R * Math.cos(psi))) * RAD2DEG
+ return Math.atan2(R * Math.sin(psi), Delta - R * Math.cos(psi)) * RAD2DEG
 }
 
 /**
@@ -77,7 +77,7 @@ export function getPositionAngleOfTheBrightLimb (jd: JulianDay): Degree {
  */
 export function getIlluminatedFraction (jd: JulianDay): number {
  const phaseAngle = getPhaseAngle(jd) * DEG2RAD
- return 1 + Math.cos(phaseAngle) / 2
+ return (1 + Math.cos(phaseAngle)) / 2
 }
 
 /**