S
- SACS — Second Astrolabe Catalogue of Santiago
- SAO — Smithsonian Astrophysical Observatory Star Catalog
- SCR — SuperCOSMOS-RECONS
- SDSS — Sloan Digital Sky Survey
- SDSSp — Sloan Digital Sky Survey, provisory
- 1SDSS — Sloan Digital Sky Survey, 1st release
- 2SDSS — reserved by the Sloan Digital Sky Survey for future release. The name is reserved to the IAU, but does not exist yet.
- 3SDSS — reserved by the Sloan Digital Sky Survey for future release. The name is reserved to the IAU, but does not exist yet.
- Sh — Sharpless catalog (Sh 1 (1953) & Sh 2(1959))
- SIMP — Sondage Infrarouge de Mouvement Propre
- SIPS — Southern Infrared Proper Motion Survey
- SPF2 — Second Cat of Fundamental Stars
- SPF3 — Third Santiago-Pulkovo Fundamental Star Catalogue
- SPOCS — Spectroscopic Properties of Cool Stars
- SRS — Southern Reference Star Catalog
- SSSPM — SuperCOSMOS Sky Survey
- SSTc2d — Spitzer Space Telescope c2d Legacy Source
- STF — Struve the Father double star
- Stock — Stock open clusters (Stock 1 and 2 in, Stock 3 to 23 in, Stock 24 in )
Read more about this topic: List Of Astronomical Catalogues