| discov | author |
| HDO | Harvard Obs. |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | dm_number | notes | coord_arcsec_2000 |
| 00273+0708 | HDO 21 | 2000 | 6 | 312 | 16.2 | 12.00 | 12.70 | D | 002715.13+070835.5 | |||
| 00273+0708 | HDO 21 | 2012 | 8 | 313 | 16.3 | 12.00 | 12.70 | 002715.13+070835.5 | ||||
| 00273+0708 | HDO 21 | 2015 | 10 | 312 | 16.3 | 12.00 | 12.70 | 002715.13+070835.5 |