DR13

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 J022736.66-011241.9123766327579639829469274082PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663275796398294692740821PRIMARY
1237663524923834512692740822SECONDARY
1237667128367054991692740822SECONDARY
1237676323896950916692740822SECONDARY
1237646010025574412692740822SECONDARY
1237646503936000052692740822SECONDARY
1237646645671493727692740822SECONDARY
1237653010842058838692740822SECONDARY
1237653607804240007692740822SECONDARY
1237657868419465227692740822SECONDARY
1237659753923084428692740822SECONDARY
1237660784703504615692740822SECONDARY