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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 J002956.44-004641.3123766378312695815177815036PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783126958151778150361PRIMARY
1237667171855695944778150362SECONDARY
1237646010549534825778150362SECONDARY
1237653011366019199778150362SECONDARY
1237659754447110212778150362SECONDARY
1237659904787546244778150362SECONDARY
1237660025043878018778150362SECONDARY
1237660222614601801778150362SECONDARY
1237660355750658184778150362SECONDARY
1237663276320424067778150362SECONDARY
1237663478200008774778150362SECONDARY
1237663525447860323778150362SECONDARY
1237663714407022670778150362SECONDARY