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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 J002633.87+005425.61237678434328051777115296158PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376784343280517771152961581PRIMARY
12376460126966907701152961582SECONDARY
12376530135131095791152961582SECONDARY
12376597565942007281152961582SECONDARY
12376599069346366331152961582SECONDARY
12376600271910339021152961582SECONDARY
12376602247616922151152961582SECONDARY
12376603578978140221152961582SECONDARY
12376632784675144451152961582SECONDARY
12376634803470991921152961582SECONDARY
12376635275949507131152961582SECONDARY
12376637165541130931152961582SECONDARY
12376637852740485641152961582SECONDARY
12376671740027863591152961582SECONDARY