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# Planetary Geologic Mapping: the Vesta Snowman 
## Alessandro Frigeri<sup>1</sup>, Katrin Stephan<sup>2</sup>, Roland Wagner<sup>2</sup> 
__<sup>1</sup>Istituto di Astrofisica e Planetologia Spaziali (IAPS), Istituto Nazionale di Astrofisica (INAF), Rome, Italy__ \
__<sup>2</sup>German Aerospace Center - DLR, Berlin, Germany__

This package contain the dataset for the geologic mapping of a region of asteroid Vesta named 'The Snowman'.  

This datapackage includes data from the NASA/Dawn mission to Vesta and Ceres:
- FC: image mosaic basemaps
- FC: topographic basemap
- FC: color map (RBG)
- VIR: spectral indexes for band center and depths for the pyroxene absorption bands

## The geographic context

![The Snowman](https://planetary.s3.amazonaws.com/web/assets/pictures/vesta_dawn_snowman_2f2_365891958_detail.jpg "The Snowman"){height=600px}

The snowman is a set of three craters, nicknamed "Snowman" by the NASA/Dawn Framing Camera's team members.  TIt is located in the northern hemisphere of Vesta and the two larger craters are about 40 kilometers across.

This dataset includes basemaps and data to do develop a geologic mapping project over the _Snowman_ region of Vesta.

The __coordinate reference system (CRS)__ for this data set is the [IAU_2015:20000041](https://spatialreference.org/ref/iau_2015/200000410/), indicating a [simple cylindrical projection](https://en.wikipedia.org/wiki/Equirectangular_projection) over a sphere with 255 km of radius.

## How to Use this Material

This "Vesta Snowman dataset" is licensed under CC-BY-SA-4.0 international license.  This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. The license allows for commercial use. If you remix, adapt, or build upon the material, you must license the modified material under identical terms. CC BY-SA includes the following elements: