Contents within planetarium

• 12,904 galaxies
• 3 galaxy pairs
• 2 duplicate catalogue entries
• 1 reflection nebula
• 1 planetary nebula
• 1 hII region
• 1 nebula

Overlap with other object catalogs

• 12,482 Uppsala General Catalog of galaxies (UGC)
• 3,174 New General Catalogue (NGC)
• 838 Index Catalogue (IC)
• 433 Uppsala General Catalog of galaxies addendum (UGCA)
• 299 Markarian galaxies
• 99 Arp's catalog of peculiar galaxies
• 38 Messier objects
• 29 Caldwell objects
• 1 Strasbourg-ESO Catalogue of Galactic Planetary Nebulae
• 1 PK planetary nebulae
• 1 Melotte catalog
• 1 Lynds' catalogue of bright nebulae
• 1 Collinder catalog

Reference

• https://cdsarc.cds.unistra.fr/viz-bin/cat/VII/237

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