[gdal-dev] Shape update/addition for Ceres

Even Rouault even.rouault at spatialys.com
Sat Dec 21 06:40:04 PST 2024


Scott,

You don't need to depend on Esri for that:

$ gdalsrsinfo IAU_2015:200000101

PROJ.4 : +proj=longlat +a=487300 +b=446000 +no_defs

OGC WKT2:2019 :
GEOGCRS["Ceres (2015) / Ographic",
     DATUM["Ceres (2015)",
         ELLIPSOID["Ceres (2015)",487300,11.7990314769976,
             LENGTHUNIT["metre",1]],
         ANCHOR["Kait: 0.0"]],
     PRIMEM["Reference Meridian",0,
         ANGLEUNIT["degree",0.0174532925199433]],
     CS[ellipsoidal,2],
         AXIS["geodetic latitude (Lat)",north,
             ORDER[1],
             ANGLEUNIT["degree",0.0174532925199433]],
         AXIS["geodetic longitude (Lon)",east,
             ORDER[2],
             ANGLEUNIT["degree",0.0174532925199433]],
     ID["IAU",200000101,2015],
     REMARK["Source of IAU Coordinate systems: 
https://doi.org/10.1007/s10569-017-9805-5"]]

Even

Le 21/12/2024 à 15:17, Reynolds, Scott via gdal-dev a écrit :
>
> As a user of GDAL in some of our products I’m trying to find a 
> contact, probably/possibly at Esri, that could add a new entry for 
> Ceres that uses the oblate parameters defined here 
> <https://astropedia.astrogeology.usgs.gov/download/Docs/WGCCRE/WGCCRE2015reprint.pdf> 
> (487.3km, 446km). ESRI:104972 exists for the spherical definition (470 
> km).
>
> Thanks,
>
> Scott
>
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