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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 J022846.22+005815.31237678617434128807117921420PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376786174341288071179214201PRIMARY
12376459439705296541179214202SECONDARY
12376460127100603321179214202SECONDARY
12376466483559797661179214202SECONDARY
12376467084745773161179214202SECONDARY
12376571108919875741179214202SECONDARY
12376578711038859111179214202SECONDARY
12376597566075707921179214202SECONDARY
12376598854413193611179214202SECONDARY
12376600272044036131179214202SECONDARY
12376602075632770931179214202SECONDARY
12376602419186896271179214202SECONDARY
12376603364128853541179214202SECONDARY
12376632398070421141179214202SECONDARY
12376632784808843051179214202SECONDARY
12376635276083205051179214202SECONDARY
12376637852874183501179214202SECONDARY
12376638926458720341179214202SECONDARY
12376671310515411241179214202SECONDARY