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 J052856.71+010013.01237658188924322166116544728PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
12376581889243221661165447281PRIMARY
12376633342956012981165447282SECONDARY
12376763045632413771165447282SECONDARY
12376463820741022681165447282SECONDARY
12376466483757058151165447282SECONDARY
12376467084943035051165447282SECONDARY
12376467514331630151165447282SECONDARY
12376467938388215401165447282SECONDARY