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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 J235531.15+005338.71237663278464172218116890448PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376632784641722181168904481PRIMARY
12376634803436914791168904482SECONDARY
12376635275915430161168904482SECONDARY
12376637165507053981168904482SECONDARY
12376637852706408391168904482SECONDARY
12376666500319153421168904482SECONDARY
12376671739993786601168904482SECONDARY
12376728385262061011168904482SECONDARY
12376460126932830841168904482SECONDARY
12376500113186490431168904482SECONDARY
12376530135097673921168904482SECONDARY
12376597565907928951168904482SECONDARY
12376599069312944241168904482SECONDARY
12376600271876261831168904482SECONDARY
12376602247582844931168904482SECONDARY
12376603578944064861168904482SECONDARY