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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 J030001.67+000057.4123766378421708449997117503PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663784217084499971175031PRIMARY
1237663891575537688971175032SECONDARY
1237667129981272340971175032SECONDARY
1237676325511102993971175032SECONDARY
1237676673934950512971175032SECONDARY
1237645942900195384971175032SECONDARY
1237646011639726115971175032SECONDARY
1237646380984107023971175032SECONDARY
1237646509832929535971175032SECONDARY
1237646547962888456971175032SECONDARY
1237646647285645877971175032SECONDARY
1237653012456210457971175032SECONDARY
1237653609418391589971175032SECONDARY
1237656551468892666971175032SECONDARY
1237656603006403097971175032SECONDARY
1237657109821653695971175032SECONDARY
1237657870033617160971175032SECONDARY
1237659755537236581971175032SECONDARY
1237659884370985470971175032SECONDARY
1237660026134069778971175032SECONDARY
1237660240848355858971175032SECONDARY
1237660335342551480971175032SECONDARY
1237663238736708234971175032SECONDARY
1237663277410615314971175032SECONDARY
1237663526537986677971175032SECONDARY