Realistic 3D Star map

[d13]

Hi Everyone!

Ok - crazy idea time!

First of all, I discovered this:

http://stars.chromeexperiments.com/

Pretty cool!

I discovered that it's based on this CSV database of star positions:

https://github.com/astronexus/HYG-Database

I'm building a model of the solar system, so I now I thinking "wouldn't it be nice if instead of a skydome to surround my planets, I actually plot real stars as particles!"

I'm just musing through this right now, by my guess is that I would need to extract the x/y/z position values of each star (with the Sun as 0/0/0) and then create particles for each one.

Does that sound right?

 

If so, my first step is to Decode the CSV file:

https://raw.githubusercontent.com/astronexus/HYG-Database/master/hygfull.csv

Here's the first line (with the headings for each data item) and the first entry:

StarID,Hip,HD,HR,Gliese,BayerFlamsteed,ProperName,RA,Dec,Distance,Mag,AbsMag,Spectrum,ColorIndex
1,2,224690,,,,,0.00025315,-19.49883745,45.662100456621,9.27,5.97222057420059,K3V,0.999

All I need is the x/y/z coordinates - do any of you out there know which of those values refer to them?

 

Thanks!!

[Gijs]

How about hygxyz.csv?

[d13]

@GijsThanks, that's it!

[Gijs]

I don't know what it means, but on further inspection, the RA and Dec from hygfull.csv are all you need.

Looks like the Chrome experiment converts them to "Galactic latitude and longitude":

http://stars.chromeexperiments.com/js/spacehelpers.js

[d13]

Here's a StackOverflow suggestion on how to do it - makes sense!

https://stackoverflow.com/questions/47599242/extracting-x-y-z-values-from-a-csv-file

 

[Pryme8]

2 hours ago, d13 said:

http://stars.chromeexperiments.com/

Ohh my...