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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 J052858.14+010023.01237658188924322751116544737PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376581889243227511165447371PRIMARY
12376633342956017791165447372SECONDARY
12376763045632418971165447372SECONDARY
12376463820741028281165447372SECONDARY
12376466483757063081165447372SECONDARY
12376467084943037551165447372SECONDARY
12376467514331634991165447372SECONDARY
12376467938388220241165447372SECONDARY