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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 J211510.78+003604.61237678617399788733109063245PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376786173997887331090632451PRIMARY
12376499420552243071090632452SECONDARY
12376530129553338941090632452SECONDARY
12376565691885824001090632452SECONDARY
12376597431705941591090632452SECONDARY
12376599063768607531090632452SECONDARY
12376600266331923621090632452SECONDARY
12376601941387522711090632452SECONDARY
12376602242038509711090632452SECONDARY
12376634583140284351090632452SECONDARY
12376634754905553861090632452SECONDARY
12376634797893232481090632452SECONDARY
12376635270371745301090632452SECONDARY
12376666494774813991090632452SECONDARY