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Other photometric observations (detections)

Due to overlaps in imaging stripes, the SDSS sometimes observes the same object more than once. In such cases, we select one observation as PRIMARY (mode=1). Each astronomical object is assigned a thingID, and each time that "thing" is observed (detected in SDSS imaging), it assigned a separate objID.

Information about each astronomical "thing" is stored in the thingIndex table; thingIndex is a thin coupling table designed only to connect repeat observations. Information about each individual observation (detection) is in the photoObjAll table. (Note that photoObj contains only the primary [mode=1] and secondary [mode=2] observations of each "thing.") The detectionIndex table connects each objID to the thingID it corresponds with.

This detected object and its associated "Thing" (Primary observation)

IAU nameobjidthingidmode description
SDSS J003111.19+005942.41237663278468038689116774176PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376632784680386891167741761PRIMARY
12376634803476234551167741762SECONDARY
12376635275954749771167741762SECONDARY
12376637165546373161167741762SECONDARY
12376637852745728051167741762SECONDARY
12376671740033105961167741762SECONDARY
12376784332547031431167741762SECONDARY
12376460126971494981167741762SECONDARY
12376530135136338521167741762SECONDARY
12376597565947248881167741762SECONDARY
12376599069351608821167741762SECONDARY
12376600271914926801167741762SECONDARY
12376602247622164671167741762SECONDARY
12376603578982728451167741762SECONDARY