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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 J003156.74-002426.6123766378366402571287888668PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783664025712878886681PRIMARY
1237667172392763491878886682SECONDARY
1237645877411905672878886682SECONDARY
1237653011903086755878886682SECONDARY
1237659754984177773878886682SECONDARY
1237659905324613766878886682SECONDARY
1237660025581011014878886682SECONDARY
1237660223151669397878886682SECONDARY
1237660356287791161878886682SECONDARY
1237663276857491599878886682SECONDARY
1237663478737076341878886682SECONDARY
1237663525984927865878886682SECONDARY
1237663714944090214878886682SECONDARY