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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 J011206.23-002510.9123766378366841714987970696PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783668417149879706961PRIMARY
1237666381592789690879706962SECONDARY
1237645877416297217879706962SECONDARY
1237646547414156030879706962SECONDARY
1237660025585402327879706962SECONDARY
1237660223156060292879706962SECONDARY
1237663525989318879879706962SECONDARY
1237663542630154746879706962SECONDARY