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.. _Data-Products-DP0-1-schema-position:
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#####################################
Schema for dp01_dc2_catalogs.position
#####################################

.. This section should provide a brief, top-level description of the page.

This page is a reference to schema for select astrometry-related parameters for objects detected in the coadded images.
Other schemas are listed under :ref:`DP0-1-Data-Products-DPDD-Catalogs`.

Principal columns are in **bold face type**.

.. list-table:: Schema for dp01_dc2_catalogs.position
   :header-rows: 1

   * - Column Name
     - Unit
     - Data Type
     - Description
   * - **coord_ra**
     - rad
     - double
     - RA-coordinate
   * - **coord_dec**
     - rad
     - double
     - Decl-coordinate
   * - **extinction_bv**
     - mag
     - double
     - Milky Way dust extinction, E(B-V)
   * - **objectId**
     - 
     - long
     - Unique id.
   * - **parent**
     - 
     - long
     - unique ID of parent source
   * - **deblend_nChild**
     - 
     - int
     - Number of children this object has (defaults to 0)
   * - **detect_isPrimary**
     - 
     - boolean
     - true if source has no children and is in the inner region of a coadd patch and is in the inner region of a coadd tract and is not "detected" in a pseudo-filter (see config.pseudoFilterList)
   * - detect_isPatchInner
     - 
     - boolean
     - true if source is in the inner region of a coadd patch
   * - detect_isTractInner
     - 
     - boolean
     - true if source is in the inner region of a coadd tract
   * - merge_footprint_sky
     - 
     - boolean
     - Detection footprint overlapped with a detection from filter sky
   * - merge_peak_sky
     - 
     - boolean
     - Peak detected in filter sky
   * - merge_footprint_[f]
     - 
     - boolean
     - Detection footprint overlapped with a detection from filter f
   * - merge_measurement_[f]
     - 
     - boolean
     - Flag field set if the measurements here are from the f filter
   * - merge_peak_[f]
     - 
     - boolean
     - Peak detected in filter f