• S —
James South (double stars) • Sa — Sanduleak (planetary nebulae) • SA — Sandqvist (dark nebulae) (for example: Sandqvist 169 near
Alpha Centauri) • SACS —
Second Astrolabe Catalogue of Santiago • Saloranta — Jaakko Saloranta (telescopic asterisms) • SAO —
Smithsonian Astrophysical Observatory Star Catalog • Saurer — (for example: the open star cluster Saurer 1 at 7:18:18 / +1°53'12" in
Canis Minor) • SaWe — Sanduleak-Weinberger (planetary nebulae) • SAX — Satellite per Astronomia a raggi X (
BeppoSAX satellite) • SC —
Slough catalogue ("Observations of Nebulae and Clusters of Stars, made at Slough, with a Twenty-Feet Reflector, between the years 1825 and 1833" by John Herschel; 2306 entries) • Schb —
John Martin Schaeberle (double stars) • Schj —
Hans Schjellerup (double stars) • Schoenberg — (for example: Schoenberg 205-6 at 6:37.1 / +10°21') • Schuster — (for example: open star cluster Schuster 1 at 10:04:39 / -55°51'29" in
Vela) • SCM — Schwarz, Corradi, Melnick catalogue. • Scott — J.L. Scott (double stars) • SCR — SuperCOSMOS-RECONS • SDSS —
Sloan Digital Sky Survey • SDSSp — Sloan Digital Sky Survey, provisory • SHOC --- Strong Emission Line H II Galaxies in the Sloan Digital Sky Survey. I. Catalog of DR1 Objects with Oxygen Abundances from Te Measurements. • 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. • Se — Father Angelo Secchi (double stars) • Se — Sersic (selected list of peculiar galaxies and groups of galaxies) • See — T.J.J. See (
Thomas Jefferson Jackson See, 1866–1962) (double stars) (related to the 'Lambda' catalogue which is mentioned in T.W.Webb's Celestial Objects for Common Telescopes, Volume 2: The Stars, pages 285–319: Index of Double Stars, Epoch 2000). • SEGUE — Sloan Extension for Galactic Understanding and Exploration (for example: galaxies
Segue 1 in Leo,
Segue 2 in Aries, and
Segue 3 in Pegasus) • Sei — J. Scheiner (double stars) • SGR — Soft Gamma Repeater • Sh —
Sharpless catalog (Sh 1 (1953) & Sh 2 (1959)) • Sh — Sher (open star clusters) (for example: Sher 1 at 11:01:04 / -60°14'00" in
Carina) • S, h — James South / John Herschel (joint 1824 catalogue of double stars) • Shk — Romela Karapet Shakhbazian (compact groups of galaxies) (for example: Shakhbazian 1 (the 'Russian Cluster') at 10:54.8 / +40°28' in
Ursa Major) • Shorlin — (for example: open star cluster Shorlin 1 at 11:05:46 / -61°13'48" in
Carina) • Simeis — (for example: supernova remnant Simeis 147 / Sh2-240 in Taurus, also known as the '
Spaghetti Nebula') • SIMP — Sondage Infrarouge de Mouvement Propre (), an all-sky survey in the near-infrared initiated in 2005 with the CPARIR camera. • Sinnott — (multiple star systems) • SIPS —
Southern Infrared Proper Motion Survey • Sk — Skinner (double stars) • SL — Sandqvist-Lindroos (dark nebulae) • Slr — R.P. Sellors (double stars) • Smart — W.M. Smart (double stars) • Smyth — W.H. Smyth (1788–1865) (double stars) • Sn — Shane (planetary nebulae) • Sp —
Giovanni Schiaparelli (double stars) • Sp — Shapley (planetary nebulae) • Spano — (telescopic asterisms) • SPF2 —
Second Cat of Fundamental Stars • SPF3 —
Third Santiago-Pulkovo Fundamental Star Catalogue • SPOCS —
Spectroscopic Properties of Cool Stars • SRS —
Southern Reference Star Catalog • SS — Sadler and Sharp (survey of E-type and S0-type galaxies) • SS — Sanduleak-Stephenson (for example: SS 433 in Aquila) • SSSPM —
SuperCOSMOS Sky Survey • SSTc2d —
Spitzer Space Telescope c2d Legacy Source • SSTDUSTG —
DUSTiNGS (Dust in Nearby Galaxies with Spitzer) • St — Carl L. Stearns (double stars) • Ste — Stephenson (open star clusters) • Stein —
Johan Stein (double stars) • Steine — (open star clusters) • STF (Σ) —
Friedrich Georg Wilhelm von Struve, aka 'Struve the Father' (double stars) • ΣI — W. Struve, First Supplement (double stars) • ΣII — W. Struve, Second Supplement (double stars) • StM –
Charles Bruce Stephenson (late M stars) • St / Stock —
Jürgen Stock (open star clusters) (Stock 1 and 2 in, Stock 3 to 23 in, Stock 24 in ) • Stone —
Ormond Stone (double stars) • Streicher — (telescopic asterisms) • Stromlo — (for example: Stromlo 2 in
Monoceros and
Canis Major, at IC 2177; the 'Eagle Nebula') • StWr — Stock-Wroblewski (planetary nebulae) • Sw — Swift (double stars) • SWEEPS — Sagittarius Window Eclipsing Extrasolar Planet Search • Swift (for example: Swift J1745-26 in Sagittarius) (stellar-mass black hole) • SwSt — Swings-Struve (planetary nebulae) • SyO — Sydney Observatory, Australia (double stars) ==T==