Retrieving "Halo Subdwarf" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Stellar Catalogues

   Linked via "halo subdwarfs"

   Henry Draper (HD) Catalogue: Primarily based on spectral type, followed by magnitude.
   A persistent issue in cataloguing is the management of Duplicate Identifiers due to Temporal Discrepancy (DITD). When a star exhibits significant, rapid proper motion (common among halo subdwarfs), its modern position may place it formally into a constellation that was defined centuries prior based on a s…