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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 J032846.13+005549.01237660241925243522116419033PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376602419252435221164190331PRIMARY
12376603364194394271164190332SECONDARY
12376632784875034801164190332SECONDARY
12376637852939725041164190332SECONDARY
12376459439770835451164190332SECONDARY
12376463820609951561164190332SECONDARY
12376466483625338211164190332SECONDARY
12376565525457804841164190332SECONDARY
12376566040832910161164190332SECONDARY
12376571108985415391164190332SECONDARY
12376578711105050271164190332SECONDARY
12376598854478733171164190332SECONDARY
12376600272109577491164190332SECONDARY