| refcode | metd | author | reference |
| HDS | Hipparcos Double Star (from additional DD list) | ................... |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 00523+4220 | HDS 114 | 1991 | 2 | 167 | 5.0 | 9.20 | 13.27 | K0 | 005220.91+421934.9 | ||
| 00523+4220 | HDS 114 | 2020 | 3 | 165 | 5.0 | 9.20 | 13.27 | K0 | X | 005220.91+421934.9 |