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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 J030000.97+005006.31237678617437536442114314344PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376786174375364421143143441PRIMARY
12376458790387719441143143442SECONDARY
12376465876944169921143143442SECONDARY
12376530135299529581143143442SECONDARY
12376535798912787211143143442SECONDARY
12376570717036883631143143442SECONDARY
12376572349159187491143143442SECONDARY
12376578147359137421143143442SECONDARY
12376597566109787761143143442SECONDARY
12376599149721691851143143442SECONDARY
12376600094943487191143143442SECONDARY
12376632049338950141143143442SECONDARY
12376635055972035571143143442SECONDARY
12376635442525644921143143442SECONDARY
12376663016270080861143143442SECONDARY
12376663402751598681143143442SECONDARY
12376666623982306091143143442SECONDARY