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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 J230548.23-001853.6123766378365458858587745297PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783654588585877452971PRIMARY
1237666648415862910877452972SECONDARY
1237667103663915095877452972SECONDARY
1237667172383326359877452972SECONDARY
1237650009702596752877452972SECONDARY
1237653011893715071877452972SECONDARY
1237659754974740628877452972SECONDARY
1237659905315242075877452972SECONDARY
1237660025571573921877452972SECONDARY
1237660223142232209877452972SECONDARY
1237660356278354023877452972SECONDARY
1237663276848054527877452972SECONDARY
1237663478727639233877452972SECONDARY
1237663525975490742877452972SECONDARY
1237663714934653108877452972SECONDARY