+40°28') Shorlin - (for example: open star cluster Shorlin 1 at 11:05:46 / -61:13:48) Simeis - (for example: supernova remnant Simeis 147 / Sh2-240 in Taurus, also known as the 'Spaghetti Nebula') SIMP — Sondage Infrarouge de Mouvement Propre 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 - G.V.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) — Struve the Father double stars ΣI - W.Struve, First Supplement (double stars) ΣII - W.Struve, Second Supplement (double stars) St / Stock — Stock open 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 Ta — Tarrant (double stars) TAC — Twin Astrograph Catalog Tc — Thackeray (planetary nebulae) TD1 — Catalogue of stellar UV fluxes (TD1 satellite) Terzan — Agop Terzan Catalogue of Globular Star Clusters (11 objects) THA — TH-alpha catalogue of emission line stars in the Eta Carinae nebula region TIC — TESS Input Catalog TIC — Tycho Input Catalog TOI — TESS Object of Interest Tom — Tombaugh (open star clusters) Ton — Tonantzintla Catalogue (globular star clusters) TPK — Teutsch-Patchick-Kronberger (asterisms) TRAPPIST — Transiting Planets and Planetesimals Small Telescope TrES — Trans-Atlantic Exoplanet Survey TrES-And0 — TrES of planetary