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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 J002428.65-004306.6123766378312630362277805498PRIMARY

Other Observations of this "Thing"

objidthingidmodemode description
1237663783126303622778054981PRIMARY
1237667171855041467778054982SECONDARY
1237678433253655056778054982SECONDARY
1237646010548945322778054982SECONDARY
1237653011365429717778054982SECONDARY
1237659754446520934778054982SECONDARY
1237659904786956704778054982SECONDARY
1237660025043288712778054982SECONDARY
1237660222614012292778054982SECONDARY
1237660355750068789778054982SECONDARY
1237663276319834633778054982SECONDARY
1237663478199419218778054982SECONDARY
1237663525447270769778054982SECONDARY
1237663714406368092778054982SECONDARY