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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 J031952.44-005024.4123766629948168643074620687PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237666299481686430746206871PRIMARY
1237666724649960113746206872SECONDARY
1237646585549095811746206872SECONDARY
1237653608346812921746206872SECONDARY
1237657232770597828746206872SECONDARY
1237657584954508306746206872SECONDARY
1237657868962038680746206872SECONDARY
1237659754465723017746206872SECONDARY
1237660239776777183746206872SECONDARY
1237660338018845759746206872SECONDARY
1237663202788574194746206872SECONDARY
1237663327326372823746206872SECONDARY
1237663503451947425746206872SECONDARY