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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 J005127.31+005238.61237663785276735785115770701PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376637852767357851157707011PRIMARY
12376671740055389191157707012SECONDARY
12376763265707542311157707012SECONDARY
12376460126993778151157707012SECONDARY
12376466483453625371157707012SECONDARY
12376530135158620741157707012SECONDARY
12376597565969532451157707012SECONDARY
12376599069373892521157707012SECONDARY
12376600271937210341157707012SECONDARY
12376602247644448351157707012SECONDARY
12376603579005011601157707012SECONDARY
12376632784702670661157707012SECONDARY
12376634803498517901157707012SECONDARY
12376635275977033411157707012SECONDARY
12376637165568001401157707012SECONDARY