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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 J020108.50-010322.8123766378260004873068412640PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663782600048730684126401PRIMARY
1237663889958502466684126402SECONDARY
1237667128364171484684126402SECONDARY
1237676323894067278684126402SECONDARY
1237678882107621451684126402SECONDARY
1237646010022690939684126402SECONDARY
1237646503933051053684126402SECONDARY
1237646645668610151684126402SECONDARY
1237656592810573989684126402SECONDARY
1237656970772742343684126402SECONDARY
1237657108204617861684126402SECONDARY
1237657868416516328684126402SECONDARY
1237659753920200876684126402SECONDARY
1237659882753949829684126402SECONDARY
1237660024517034079684126402SECONDARY
1237660204875907138684126402SECONDARY
1237660222087692404684126402SECONDARY
1237660333725515835684126402SECONDARY
1237660784700621003684126402SECONDARY
1237663237119672433684126402SECONDARY
1237663275793514749684126402SECONDARY
1237663524920950916684126402SECONDARY