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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 J002833.42+005510.91237678433791311957114612295PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376784337913119571146122951PRIMARY
12376460126968873771146122952SECONDARY
12376530135133717421146122952SECONDARY
12376597565943973111146122952SECONDARY
12376599069348987771146122952SECONDARY
12376600271912305751146122952SECONDARY
12376602247618889001146122952SECONDARY
12376603578980106461146122952SECONDARY
12376632784677766141146122952SECONDARY
12376634803472958881146122952SECONDARY
12376635275952128031146122952SECONDARY
12376637165543097781146122952SECONDARY
12376637852742451521146122952SECONDARY
12376671740029830481146122952SECONDARY