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Type: planetary nebula
Mag: B=?, V=?
Synonyms: H III-742
Discovered in 1788 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "vF, stellar, verified with 300 power."
The RNGC (Sulentic and Tifft 1973) notes that this is a planetary nebula.
The Messier objects
The Bennett objects
The Caldwell list
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