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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 J004335.63-004515.1123766378312840106377836943PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783128401063778369431PRIMARY
1237667171857138646778369432SECONDARY
1237646010551042683778369432SECONDARY
1237653011367527104778369432SECONDARY
1237659754448618336778369432SECONDARY
1237659904789054297778369432SECONDARY
1237660025045386070778369432SECONDARY
1237660222616110082778369432SECONDARY
1237660355752166273778369432SECONDARY
1237663276321932296778369432SECONDARY
1237663478201516935778369432SECONDARY
1237663525449367929778369432SECONDARY
1237663714408465517778369432SECONDARY