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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 J233923.53-004943.7123766378312138818877731560PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783121388188777315601PRIMARY
1237666647882662438777315602SECONDARY
1237667103130714682777315602SECONDARY
1237667171850125930777315602SECONDARY
1237645876869333294777315602SECONDARY
1237650009169396173777315602SECONDARY
1237653011360514430777315602SECONDARY
1237659754441540079777315602SECONDARY
1237659904782041493777315602SECONDARY
1237660025038373407777315602SECONDARY
1237660222609031724777315602SECONDARY
1237660355745153626777315602SECONDARY
1237663276314919311777315602SECONDARY
1237663478194438742777315602SECONDARY
1237663525442290264777315602SECONDARY
1237663714401452644777315602SECONDARY