astronomy

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Help in finding planetary position for astrology

10

I am not an astronomy student. But I want to find the degrees of planets at a particular time. I used the GeoVector method, but it gives me x, y...

bizprat

Kotlin: Astronomy.seasons is slow

1

I think given the way seasons are calculated the following issue can be expected but I'm describing it anyway so you may want to fix or close it, I'm running...

ebraminio

Predict Jupiter moon shadow and eclipse events

10

Here is an example of the kind of events I want to predict. This text comes from the [Sky and Telescope Jupiter's Moon calculator](https://skyandtelescope.org/wp-content/plugins/observing-tools/jupiter_moons/jupiter.html). That tool also produces a nice...

cosinekitty

Calculate round-trip radar bounce time from Earth to Moon

2

Inspired by a conversation on Facebook, I want to create a demo program that calculates the amount of time it takes for a radar pulse from a specific location on...

cosinekitty

Astronomy glossary

14

Create a document that explains astronomy terminology. Alphabetically sorted glossary. Allow deep linking from other documents. - Observers - Heliocentric - Geocentric - Topocentric - Coordinate systems - Equatorial -...

cosinekitty

Host live demos of JavaScript browser examples

8

I was trying to use GitHub Pages just so I could host live demos of the JavaScript browser examples. It worked, but at the cost of having two different versions...

cosinekitty

It would be nice to find authoritative values for Saturn's visual magnitude to use as test data. The following paper has formulas for Saturn (and the other planets), but no...

cosinekitty

Like its Python counterpart, the C# struct AstroVector should have a ToString override that displays x, y, z, t. Also look for other classes/structs that would benefit from formatting.

cosinekitty

Why is the accuracy error of my calculation results so large? Especially the moon.

5

> Astronomy Engine is designed to be small, fast, and accurate to within ±1 arcminute. It is based on the authoritative and well-tested models [VSOP87](https://en.wikipedia.org/wiki/VSOP_(planets)) and [NOVAS C 3.1](https://aa.usno.navy.mil/software/novas/novas_c/novasc_info.php). Is...

ichingsoft

Node importing broken

11

I think this was broken by #263. When importing using `import * as Astronomy from 'astronomy-engine';` into a Node project that is marked as a module in package.json or into...

bdougherty