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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 J031951.36-005117.1123766629948168670974620529PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237666299481686709746205291PRIMARY
1237666406853706089746205292SECONDARY
1237666539970167099746205292SECONDARY
1237646546891309240746205292SECONDARY
1237652997929042264746205292SECONDARY
1237653577746022677746205292SECONDARY
1237657584954507586746205292SECONDARY
1237657761042792670746205292SECONDARY
1237657812590592455746205292SECONDARY
1237659912826847834746205292SECONDARY
1237660338018845229746205292SECONDARY
1237663327326372389746205292SECONDARY
1237663503451947284746205292SECONDARY