description RCW 140 Overview
RCW 140, also catalogued as Sh 2-19, is an emission nebula and H II region in the direction of Sagittarius. An H II region is a cloud of ionized hydrogen surrounding or near hot, young stars. Infrared sources associated with RCW 140 have been studied in connection with star formation, because infrared observations can reveal young stellar objects and dense material hidden by interstellar dust.
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How good is RCW 140?
RCW 140 scores 5.88/10 (Mediocre) on Lunoo, making it rated in the Nebula category. Sagittarius H II region with infrared star-formation interest, but crowded field and limited popular recognition.
What are the best alternatives to RCW 140?
See our alternatives page for RCW 140 for a ranked list with scores. Top alternatives include: RCW 121, RCW 122, RCW 147.
How does RCW 140 compare to RCW 121?
See our detailed comparison of RCW 140 vs RCW 121 with scores, features, and an AI-powered verdict.
Is RCW 140 worth it in 2026?
With a score of 5.88/10, RCW 140 is a solid option in Nebula. See all Nebula ranked.
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