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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 J220053.71+010551.21237678595929932450119665565PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376785959299324501196655651PRIMARY
12376498094497470271196655652SECONDARY
12376499125249643201196655652SECONDARY
12376562390110048041196655652SECONDARY
12376569090264273381196655652SECONDARY
12376571925027886391196655652SECONDARY
12376600099984511381196655652SECONDARY
12376602376300139961196655652SECONDARY
12376634459736641971196655652SECONDARY
12376635061013713081196655652SECONDARY
12376635447566669951196655652SECONDARY
12376660787867815991196655652SECONDARY
12376663021311758381196655652SECONDARY
12376663407792625611196655652SECONDARY
12376664095031300731196655652SECONDARY
12376664953898274171196655652SECONDARY
12376666371318746391196655652SECONDARY
12376666629023993861196655652SECONDARY