| Obj. Type | Acronym | (Explanation) | Format | ||
| E | Star | HD | (H. Draper) | HD NNNNNN
HD NNNNNNA HD NNNNNNAA HD NNN NNN (L) HD NNN NNNA (L) HD NNN NNNAA (L) | |
| Planet | HD | (H. Draper) | HD NNNNNNa
HD NNNNNNAa HD NNN NNNa (L) HD NNN NNNAa (L) | ||
| E | Star | HDE | (H. Draper Extension) | HD NNNNNN | |
| *inCl | Cl* NGC 2527 HD | (Hilditch+Dodd) | Cl* NGC 2527 HD NN | ||
| *inCl | Cl* Ruprecht 55 HD | (Hilditch+Dodd) | Cl* Ruprecht 55 HD NN |
Acronyms flagged by E are available in electronic form at CDS
(L) following the Format indicates a form found later in the literature, which is not recognized by SIMBAD.