# NGC & IC

Also called: New General Catalogue, Index Catalogue, NGC, IC, OpenNGC.

The New General Catalogue (1888) and its Index Catalogues: the standard numbers for about 13,000 galaxies, clusters and nebulae.

John Dreyer compiled the NGC in 1888 from the Herschels' and others' discoveries — 7,840 objects — and added 5,386 more in two Index Catalogues. Most deep-sky objects are still known by these numbers: NGC 7000 is the North America Nebula, IC 434 the glow behind the Horsehead.

**In AstroPilot:** AstroPilot's catalog data comes from OpenNGC, a modern, openly licensed version of the NGC and IC.

**Examples:** [NGC7000](https://astropilot.space/object/NGC7000.md), [NGC891](https://astropilot.space/object/NGC891.md), [IC434](https://astropilot.space/object/IC434.md)

**Related:** [Messier catalog](https://astropilot.space/glossary/messier-catalog.md), [Caldwell catalog](https://astropilot.space/glossary/caldwell-catalog.md)

From the AstroPilot astronomy glossary: https://astropilot.space/glossary/ngc-ic