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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 J232711.16-004805.2123766378312007704577711658PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783120077045777116581PRIMARY
1237666647881351401777116582SECONDARY
1237667103129338136777116582SECONDARY
1237667171848814825777116582SECONDARY
1237646010542653674777116582SECONDARY
1237650009168019692777116582SECONDARY
1237653011359138159777116582SECONDARY
1237659754440229138777116582SECONDARY
1237659904780665163777116582SECONDARY
1237660025037062322777116582SECONDARY
1237660222607720763777116582SECONDARY
1237660355743777015777116582SECONDARY
1237663276313542736777116582SECONDARY
1237663478193127662777116582SECONDARY
1237663525440979169777116582SECONDARY
1237663714400141522777116582SECONDARY