Name         Type    Unit  Description
_healpix_19  int64   none  "HEALPix order 19 pixel index."
_healpix_9   int32   none  "HEALPix order 9 pixel index."
_healpix_29  int64   none  "HEALPix order 29 pixel index."
Norder       uint8   none  "Partition column. HEALPix order."
Npix         uint64  none  "Partition column. HEALPix pixel index."
objectid     int64   none  "Unique Object Identifier. This is the "oid" that is returned by queries on the Objects Table. This ID can be used to retrieve additional metadata for an Object or lightcurve."