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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 J002912.80+003103.21237663716017504404106761375PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376637160175044041067613751PRIMARY
12376637847374398701067613752SECONDARY
12376671734661776691067613752SECONDARY
12376784332543756231067613752SECONDARY
12376460121600820011067613752SECONDARY
12376530129765663531067613752SECONDARY
12376597560576574251067613752SECONDARY
12376599063980933961067613752SECONDARY
12376600266544252071067613752SECONDARY
12376602242251489721067613752SECONDARY
12376603573612053481067613752SECONDARY
12376632779309712211067613752SECONDARY
12376634798105559551067613752SECONDARY
12376635270584074851067613752SECONDARY