Natura - nature actualia - actual entities Mundus Plinius - physical world Caelum veter. - region of the fixed stars (Constellation) Sagittarius Cleostratus, 6th century BC - Sgr (Planetary system) OGLE-2006-BLG-109L system B.S. Gaudi et al., 2008 1802.6-2302 (Bright nebula) M20 - Trifid Nebula 1803.8-2423 (Bright nebula) M8 - Lagoon Nebula 1804.8-2420 (Open cluster) NGC 6530 180501.3-293448 (Star system) γ¹ Sagittarii 180548.5-302527 (Star) γ² Sagittarii - Alnasl 181345.8-210332 (Star system) μ Sagittarii 181737.6-364542 (Star system) η Sagittarii 1819.9-1708 (Open cluster) M18 182059.7-294941 (Star system) δ Sagittarii - Kaus Media 182410.3-342305 (Star system) ε Sagittarii - Kaus Australis 182758.2-252518 (Star) λ Sagittarii - Kaus Borealis 184539.4-265927 (Star system) φ Sagittarii 185410.2-224442 (Star system) ν¹ Sagittarii 185507.1-224017 (Star) ν² Sagittarii 185515.9-261748 (Star system) σ Sagittarii - Nunki 185720.5-203923 (Star) ξ¹ Sagittarii 185743.8-210624 (Star) ξ² Sagittarii 190236.7-295249 (Star system) ζ Sagittarii - Ascella 190441.0-214430 (Star system) ο Sagittarii 190656.4-274014 (Star) τ Sagittarii 190945.8-210125 (Star system) π Sagittarii 191532.4-251524 (Star system) ψ Sagittarii 192140.4-175050 (Star system) ρ¹ Sagittarii 192143.6-155718 (Star system) υ Sagittarii 192150.9-181830 (Star) ρ² Sagittarii 192238.3-442732 (Star system) β¹ Sagittarii - Arkab 192313.2-444759 (Star) β² Sagittarii 192353.2-403658 (Star) α Sagittarii - Rukbat 192516.5-243031 (Star system) χ¹ Sagittarii 192529.7-235744 (Star) χ³ Sagittarii 195515.7-415206 (Star) ι Sagittarii 195550.4-261758 (Star) ω Sagittarii 195944.2-351635 (Star) θ¹ Sagittarii 195951.3-344152 (Star system) θ² Sagittarii 202227.5-420259 (Star system) κ¹ Sagittarii 202353.2-422522 (Star system) κ² Sagittarii