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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 J003053.12-004216.8123766378312702377677816517PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783127023776778165171PRIMARY
1237667171855761580778165172SECONDARY
1237646010549665877778165172SECONDARY
1237653011366150214778165172SECONDARY
1237659754447175854778165172SECONDARY
1237659904787677267778165172SECONDARY
1237660025044009092778165172SECONDARY
1237660222614667425778165172SECONDARY
1237660355750789235778165172SECONDARY
1237663276320555074778165172SECONDARY
1237663478200074404778165172SECONDARY
1237663525447925949778165172SECONDARY
1237663714407088282778165172SECONDARY