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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 J003126.01+002825.21237663716017766538106745066PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376637160177665381067450661PRIMARY
12376637847377020461067450662SECONDARY
12376671734664398461067450662SECONDARY
12376784327177012601067450662SECONDARY
12376460121603442211067450662SECONDARY
12376530129768285101067450662SECONDARY
12376597560578540311067450662SECONDARY
12376599063983555541067450662SECONDARY
12376600266546874031067450662SECONDARY
12376602242253456341067450662SECONDARY
12376603573614675101067450662SECONDARY
12376632779311678801067450662SECONDARY
12376634798107526121067450662SECONDARY
12376635270586041381067450662SECONDARY