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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 J002948.35-010353.1123766378259002170068202094PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663782590021700682020941PRIMARY
1237667171318759504682020942SECONDARY
1237646010012663973682020942SECONDARY
1237659753910239365682020942SECONDARY
1237659904250675228682020942SECONDARY
1237660024507007037682020942SECONDARY
1237660222077730818682020942SECONDARY
1237660355213787175682020942SECONDARY
1237663275783553055682020942SECONDARY
1237663477663137794682020942SECONDARY
1237663524910989319682020942SECONDARY
1237663713870086219682020942SECONDARY