Planet rise and set times

[mayankkalbhor]

Does anyone know how to calculate planet rise and set times in javascript with this library

[cosinekitty]

Hi @mayankkalbhor and welcome to the project!

To find rise and set times for a planet, use the SearchRiseSet function. The Node.js demo program riseset.js shows how to find rise/set times for the Sun and Moon. The same approach works for planets also.

For example, finding the next time Jupiter rises:

const riseTime = Astronomy.SearchRiseSet(Astronomy.Body.Jupiter,  observer, +1, date, 300);

[cosinekitty]

I'm not familiar with that library, but I don't see why both wouldn't work together, because they are separate modules.

[mayankkalbhor]

it gives this error: We resolved 'astronomy-bundle' to astronomy-bundle/index.js, but the file does not exist on disk.

please check the codepen and open codepen console

https://codepen.io/mayanks20/pen/zYjZVre?editors=0011

[cosinekitty]

Sorry, I don't know anything about astronomy-bundle. This page is for supporting Astronomy Engine.

[mayankkalbhor]

Sorry i mixed 2 things. I am getting the error "Uncaught TypeError: Cannot read properties of null (reading 'SearchRiseSet')" when checking next time Jupiter rises.

please check the codepen and open codepen console

https://codepen.io/mayanks20/pen/MWGmeEP?editors=0011&layout=left

Is there any other import we need to make?

[cosinekitty]

I'm not sure how to use skypack... but I tried this:

import astronomyEngine from 'https://cdn.skypack.dev/astronomy-engine';
console.log(astronomyEngine);

And the result was: null. So for whatever reason, the import isn't working.

[mayankkalbhor]

Thanks @cosinekitty I was able to resolve this. I included browser minified version of astronomy into the script tag and loaded it. Now i am able to fetch the values.
const riseTime = Astronomy.SearchRiseSet(Astronomy.Body.Saturn, observer, +1, new Date(), 300);
console.log("Saturn Rise Time: ", riseTime.date.toString());
}

//Saturn Rise Time: Sun Sep 18 2022 17:46:22 GMT-0500 (Central Daylight Time)