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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 J002944.02-001213.6123765719090849412294830373PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237657190908494122948303731PRIMARY
1237660236035719663948303732SECONDARY
1237663543162372948948303732SECONDARY
1237663740713632154948303732SECONDARY
1237666300536816311948303732SECONDARY
1237666541025297022948303732SECONDARY
1237666635537580873948303732SECONDARY
1237666661308039917948303732SECONDARY
1237646011086406391948303732SECONDARY
1237656851586941627948303732SECONDARY
1237656855872405866948303732SECONDARY
1237657104989160156948303732SECONDARY