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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 J022854.73+002236.91237666408458682487103521656PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376664084586824871035216561PRIMARY
12376664986278298211035216562SECONDARY
12376665415752090541035216562SECONDARY
12376458784984924701035216562SECONDARY
12376465871541371951035216562SECONDARY
12376529995340841911035216562SECONDARY
12376565128229028611035216562SECONDARY
12376565944242012881035216562SECONDARY
12376569723863696451035216562SECONDARY
12376570711634084891035216562SECONDARY
12376575865595494981035216562SECONDARY
12376578141956342391035216562SECONDARY
12376600089540690621035216562SECONDARY
12376629681535058781035216562SECONDARY
12376635050569237481035216562SECONDARY
12376635437122847771035216562SECONDARY
12376663826749850041035216562SECONDARY