# Satellite observatory

(yes i'm aware of the typo)


Inspired by my previous project [iss_locator.rs](https://tangled.sh/@technoduck.me/iss_locator.rs), and the indomitable human spirit,
its an interactive program displaying the current location of the ISS.

The UI is made using [ratatui.rs](https://ratatui.rs/), which I hopefully will be able to then also port to [ratzilla](https://github.com/orhun/ratzilla).


## Usage

Can either be compiled normally, or with a `logging` feature, to enable tracing everything into log.log file (horrible alas it works).

## Methods

Location of the ISS is obtained from [celestrak](https://celestrak.org), where the Two Line Element for the ISS's orbit is obtained.

SGP4 algorithms + Earth Rotation angle are used to calculate the location and velocity at any specific point in time.


## Future?

While the code for now is a bit ISS specific other satellites can be easily added, by fetching their TLE and doing the same calculations.

- [ ] Transform location update to inline calculation, it's not that costly async can be reserved for the TLE fetching.
- [ ] general cleanup

## Contributions?

If you want a symbolic (or not) contribution, the easiest would be to ~~dox yourself~~ add a city!
They are all held in a `pub const CITIES` in `app.rs`. Adding a city is as easy as adding another line with your chosen location name, and longitude and lattitude (decimal).

The ISS visibility status is in the works, but the `City` struct should not change.