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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 J030004.28+004843.71237678617437537356114313786PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376786174375373561143137861PRIMARY
12376465490366307241143137862SECONDARY
12376465876944166181143137862SECONDARY
12376530000743639621143137862SECONDARY
12376565133631824321143137862SECONDARY
12376565477140732481143137862SECONDARY
12376575870998289231143137862SECONDARY
12376599149721691151143137862SECONDARY
12376603401641667491143137862SECONDARY
12376632049338945541143137862SECONDARY
12376633294716936661143137862SECONDARY
12376635055972033671143137862SECONDARY
12376635442525640861143137862SECONDARY
12376663402751597151143137862SECONDARY
12376663832152644291143137862SECONDARY
12376664089990274981143137862SECONDARY
12376664991681091391143137862SECONDARY