Contents within planetarium

• 1,043 hII regions
• 25 nebulae
• 21 reflection nebulae
• 15 open clusters
• 4 stars
• 3 supernova remnant
• 3 nebulae
• 2 duplicate catalogue entries

Overlap with other object catalogs

• 48 New General Catalogue (NGC)
• 48 Index Catalogue (IC)
• 30 Van den Bergh catalogue of reflection nebulae
• 18 Collinder catalog
• 8 Sharpless catalog
• 8 Caldwell objects
• 6 Messier objects
• 2 Melotte catalog
• 1 Uppsala General Catalog of galaxies (UGC)
• 1 Principal Galaxies Catalogue
• 1 PK planetary nebulae

Reference

• https://cdsarc.cds.unistra.fr/viz-bin/cat/VII/9

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