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A compilation of celestial data geojson objects

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# Celestial Data

[![DOI](https://img.shields.io/badge/DOI-10.5281/zenodo.7561601-blue)](https://doi.org/10.5281/zenodo.7561601)
![GitHub release (latest
SemVer)](https://img.shields.io/github/v/release/dieghernan/celestial_data)
![jsDelivr hits (GitHub)](https://img.shields.io/jsdelivr/gh/hy/dieghernan/celestial_data)

This repository contains several datasets in GeoJSON and GeoPackage
format of celestial objects as of J2000 epoch.

The original files were provided on the [d3-celestial
plugin](https://github.com/ofrohn/d3-celestial/) ([Frohn
2015](#ref-frohn2015)) under [BSD
3-Clause](https://opensource.org/licenses/BSD-3-Clause). The datasets on
this repository consists on the same data provided on [d3-celestial
plugin](https://github.com/ofrohn/d3-celestial/) processed with the
**R** package **sf** ([Pebesma 2018](#ref-pebesma2018)) to ensure its
validity:

- The spatial data objects are bounded to $[-180, -90, 180, 90]$.

- Date is provided on WGS84 - World Geodetic System 1984
  ([EPSG:4326](https://epsg.io/4326)).

- All geometries valid as per
  [ST_IsValid](https://postgis.net/docs/ST_IsValid.html) (GEOS
  **3.9.3**).

## Distribution

The data can be accessed from several API endpoints:

``` html

https://raw.githubusercontent.com/dieghernan/celestial_data/main/data/mw.min.geojson

https://dieghernan.github.io/celestial_data/data/mw.min.geojson

https://cdn.jsdelivr.net/gh/dieghernan/celestial_data@main/data/mw.min.geojson
```

## Citation

Please cite these datasets as:

Frohn O, Hernangómez D (2023). “Celestial Data.”
<doi:10.5281/zenodo.7561601> <https://doi.org/10.5281/zenodo.7561601>,
<https://dieghernan.github.io/celestial_data/>.

A BibTeX entry:

``` bibtex

@misc{frohnhernangomez:2023,
    title        = {Celestial Data},
    author       = {Olaf Frohn and Diego Hernangómez},
    year         = 2023,
    doi          = {10.5281/zenodo.7561601},
    url          = {https://dieghernan.github.io/celestial_data/},
}
```

## Data

Data is provided in GeoJSON (`*.geojson`) and GeoPackage (`*.gpkg`)
format. Additionally, for GeoJSON formats a minified version
(`*.min.geojson`) is also provided.

The data source can be found on
<https://github.com/dieghernan/celestial_data/tree/main/data>.

<details>
<summary>
List of files provided
</summary>

- `asterisms.geojson`
- `asterisms.gpkg`
- `asterisms.min.geojson`
- `constellations.borders.cn.geojson`
- `constellations.borders.cn.gpkg`
- `constellations.borders.cn.min.geojson`
- `constellations.borders.geojson`
- `constellations.borders.gpkg`
- `constellations.borders.min.geojson`
- `constellations.bounds.cn.geojson`
- `constellations.bounds.cn.gpkg`
- `constellations.bounds.cn.min.geojson`
- `constellations.bounds.geojson`
- `constellations.bounds.gpkg`
- `constellations.bounds.min.geojson`
- `constellations.cn.csv`
- `constellations.cn.geojson`
- `constellations.cn.gpkg`
- `constellations.cn.min.geojson`
- `constellations.csv`
- `constellations.geojson`
- `constellations.gpkg`
- `constellations.lines.cn.geojson`
- `constellations.lines.cn.gpkg`
- `constellations.lines.cn.min.geojson`
- `constellations.lines.geojson`
- `constellations.lines.gpkg`
- `constellations.lines.min.geojson`
- `constellations.min.geojson`
- `dsonames.cn.csv`
- `dsonames.csv`
- `dsos.14.geojson`
- `dsos.14.gpkg`
- `dsos.14.min.geojson`
- `dsos.20.geojson`
- `dsos.20.gpkg`
- `dsos.20.min.geojson`
- `dsos.6.geojson`
- `dsos.6.gpkg`
- `dsos.6.min.geojson`
- `dsos.bright.geojson`
- `dsos.bright.gpkg`
- `dsos.bright.min.geojson`
- `lg.geojson`
- `lg.gpkg`
- `lg.min.geojson`
- `messier.geojson`
- `messier.gpkg`
- `messier.min.geojson`
- `mw.geojson`
- `mw.gpkg`
- `mw.min.geojson`
- `starnames.cn.csv`
- `starnames.csv`
- `stars.14.geojson`
- `stars.14.gpkg`
- `stars.14.min.geojson`
- `stars.6.geojson`
- `stars.6.gpkg`
- `stars.6.min.geojson`
- `stars.8.geojson`
- `stars.8.gpkg`
- `stars.8.min.geojson`

</details>

See additional details on
<https://dieghernan.github.io/celestial_data/data>

## Original data sources

For completion, we add the original data sources cited by Frohn
([2015](#ref-frohn2015)):

- `asterisms.*`:

- [Saguaro Astronomy Club
    Asterisms](http://saguaroastro.org/sac-downloads/)

- `constellations.*` and `constellations.lines.*`:

- [IAU Constellation
    page](http://www.iau.org/public/themes/constellations/), name
    positions and some line modifications by Olaf Frohn, , names in
    other languages from
    [Wikipedia](https://wiki2.org/en/88_modern_constellations_in_different_languages)

- `constellations.bounds.*`:

- Davenhall, A. C., and S. K. Leggett. 1989. “Catalogue of
    Constellation Boundary Data.”
    <http://vizier.cfa.harvard.edu/viz-bin/Cat?VI/49>.

- Traditional Chinese Constellations & Stars: `constellations.cn.*`,
  `constellations.bounds.cn.*`, `constellations.lines.cn.*`,
  `starnames.cn.*`:

- [Stellarium skycultures
    data](https://github.com/Stellarium/stellarium/tree/master/skycultures/chinese)

- `dsos.6.*`, `dsos.8.^*`, `dsos.14.*`:

- [Saguaro Astronomy Club Database version
    8.1](http://www.saguaroastro.org/sac-downloads/)

- `dsos.bright.*`

- Frohn, Olaf. 2015. “d3-celestial.”
    <https://github.com/ofrohn/d3-celestial/>.

- `messier.*` Messier objects:

- [Messier Objects with Data](http://messier.seds.org/data.html),
    H.Frommert/seds.org

- `lg.*` Local group and Milky Way halo:

- Frohn, Olaf. 2015. “d3-celestial.”
    <https://github.com/ofrohn/d3-celestial/>, from different sources:
    see
    [blog](http://armchairastronautics.blogspot.com/p/milky-way-halo.html),
    [pages](http://armchairastronautics.blogspot.com/p/local-group.html)
    for complete list.

- `stars.6.*`, `stars.8.^*`, `stars.14.*`:

- Anderson, E., and Ch. Francis. 2012. “XHIP: An Extended Hipparcos
    Compilation.” *Astronomy Letters* 38 (5): 331–46.
    <https://doi.org/10.1134/S1063773712050015>.

- `starnames.*` Star names and designations:

- Kostjuk, N. D. 2002. “VizieR Online Data Catalog:
    HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index.” *VizieR Online Data
    Catalog*, IV/27A.
    <https://ui.adsabs.harvard.edu/abs/2004yCat.4027....0K>.

- [Stellarium skycultures
    data](https://github.com/Stellarium/stellarium/tree/master/po/stellarium-skycultures)
    for star name translations

## References

Anderson, E., and Ch. Francis. 2012. “XHIP: An Extended Hipparcos
Compilation.” *Astronomy Letters* 38 (5): 331–46.
<https://doi.org/10.1134/S1063773712050015>.

</div>

Butler, H., M. Daly, A. Doyle, S. Gillies, S. Hagen, and T. Schaub.
2016. “The GeoJSON Format.” RFC7946. RFC Editor.
<https://doi.org/10.17487/RFC7946>.

</div>

Davenhall, A. C., and S. K. Leggett. 1989. “Catalogue of Constellation
Boundary Data.” <http://vizier.cfa.harvard.edu/viz-bin/Cat?VI/49>.

</div>

Frohn, Olaf. 2015. “<span class="nocase">d3-celestial</span>.”
<https://github.com/ofrohn/d3-celestial/>.

</div>

Gliese, W., and H. Jahreiß. 1991. “Preliminary Version of the Third
Catalogue of Nearby Stars.”
<https://ui.adsabs.harvard.edu/abs/1991adc..rept.....G>.

</div>

Kostjuk, N. D. 2002. “VizieR Online Data Catalog:
HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index.” *VizieR Online Data
Catalog*, IV/27A.
<https://ui.adsabs.harvard.edu/abs/2004yCat.4027....0K>.

</div>

Pebesma, Edzer. 2018. “Simple Features for R: Standardized Support for
Spatial Vector Data.” *The R Journal* 10 (1): 439446.
<https://doi.org/10.32614/RJ-2018-009>.

</div>

Samus’, N. N., E. V. Kazarovets, O. V. Durlevich, N. N. Kireeva, and E.
N. Pastukhova. 2017. “General Catalogue of Variable Stars: Version GCVS
5.1.” *Astronomy Reports* 61 (1): 80–88.
<https://doi.org/10.1134/S1063772917010085>.

</div>

Smith, W. B. 1996. “VizieR Online Data Catalog: FK5 - SAO - HD - Common
Name Cross Index.” *VizieR Online Data Catalog*, August, IV/22.
<https://ui.adsabs.harvard.edu/abs/1996yCat.4022....0S>.

</div>

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