Glossary of SSA attributes |
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This Glossary alphabetically lists all attributes used in the SSA database(s) held in the SSA. If you would like to have more information about the schema tables please use the SSA Schema Browser. |
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Y | ||||||||
|---|---|---|---|---|---|---|---|---|
| Name | Schema Table | Database | Description | Type | Length | Unit | Default Value | Unified Content Descriptor |
| y_coadd | twomass_xsc | 2MASS | y (in-scan) position (coadd coord.). | real | 4 | arcsec | INST_POS | |
| yCen | Detection | F287 | Intensity-weighted Y-centroid of image | float | 8 | microns | -0.99999995e9 | POS_PLATE_Y |
| yCen | Detection | PSSA | Intensity-weighted Y-centroid of image | float | 8 | microns | POS_PLATE_Y | |
| yCen | Detection | SSA | Intensity-weighted Y-centroid of image | float | 8 | microns | POS_PLATE_Y | |
| ymax | Detection | F287 | Topmost extent of image on plate | float | 8 | microns | -0.99999995e9 | POS_PLATE_Y |
| ymax | Detection | PSSA | Topmost extent of image on plate | float | 8 | microns | POS_PLATE_Y | |
| ymax | Detection | SSA | Topmost extent of image on plate | float | 8 | microns | POS_PLATE_Y | |
| ymin | Detection | F287 | Bottommost extent of image on plate | float | 8 | microns | -0.99999995e9 | POS_PLATE_Y |
| ymin | Detection | PSSA | Bottommost extent of image on plate | float | 8 | microns | POS_PLATE_Y | |
| ymin | Detection | SSA | Bottommost extent of image on plate | float | 8 | microns | POS_PLATE_Y | |
| yPnt | Plate | F287 | Centre of scan area in Y | real | 4 | microns | -0.99999995e9 | POS_PLATE_Y |
| yPnt | Plate | PSSA | Centre of scan area in Y | real | 4 | microns | POS_PLATE_Y | |
| yPnt | Plate | SSA | Centre of scan area in Y | real | 4 | microns | POS_PLATE_Y | |
WFAU, Institute for Astronomy, mar@roe.ac.uk
Royal Observatory, Blackford Hill
Edinburgh, EH9 3HJ, UK
16/01/2026