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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 J025952.38+004710.21237678617437537085114313694PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376786174375370851143136941PRIMARY
12376458790387064421143136942SECONDARY
12376465876944164671143136942SECONDARY
12376530000743632561143136942SECONDARY
12376570717036880711143136942SECONDARY
12376572349158530881143136942SECONDARY
12376575870997634421143136942SECONDARY
12376599407333872151143136942SECONDARY
12376603401641660471143136942SECONDARY
12376632049338292791143136942SECONDARY
12376663016270078921143136942SECONDARY
12376667267952155761143136942SECONDARY