| Show | code | author ⇓ |
| Show | USN | (U.S. Naval Observatory) |
| Show | TOR | (Torino Observatory) |
| Show | ERO | (the EROS collaboration) |
| Show | SPR | (Sproul Observatory) |
| Show | PKO | (Pulkova Observatory) |
| Show | PTF | (Palomar Transient Factory) |
| Show | PTI | (Palomar Testbed Interferometer) |
| Show | STT | (O. Struve DD - Appendix list) |
| Show | ENH | (Note: Sometime after publication of the IDS, the designation for Engelmann was |
| Show | ENG | (Note: Some time after publication of the IDS, the designation for Engelmann was |
| Show | NOI | (Navy Prototype/Precision Optical Interferometer) |
| Show | MKT | (Mark III Interferometer) |
| Show | AST | (HST FGS Astrometry Science Team) |
| Show | H | (Herschel DD - list 1) |
| Show | HBC | (Herbig Bell Catalog) |
| Show | HMO | (Hamburg Observatory) |
| Show | STF | (F. Struve DD - Appendix list #1) |
| Show | DEO | (Dearborn Observatory) |
| Show | AAQ | (Astronomical Association of Queensland) |
| Show | VSK | (additional Discoverer Designation - see VAS) |
| Show | KOI | "Kepler Object of Interest" (transiting exoplanet candidate of Kepler mission. |