map the debris freecodecamp
const orbitalPeriod = arr => {
const GM = 398600.4418;
const earthRadius = 6367.4447;
const root = 2 * Math.PI
const orbitalPeriods = arr.map(elem => {
let avgAlt = elem.avgAlt // avgAlt from current looped object
delete elem.avgAlt // Delete avgAlt from the object
const numerator = (earthRadius + avgAlt)**3 // Power of 3 or power of x(**x)
const innerRoot = Math.sqrt(numerator / GM) // Square root
const orbitalPeriod = Math.ceil(innerRoot * root); // Round a number upward to its nearest integer
// Since we are using map, we return a new object of all the initial elements and the new one
return {
...elem,
orbitalPeriod
}
})
return orbitalPeriods
}
orbitalPeriod([{name: "iss", avgAlt: 413.6}, {name: "hubble", avgAlt: 556.7}, {name: "moon", avgAlt: 378632.553}]);
// With love @kouqhar