N
- N30 — Catalog of 5,268 Standard Stars Based on the Normal System N30
- NGC — New General Catalogue
- NHICAT — Northern HIPASS Catalog
- NLTT — New Luyten Two-Tenths Catalogue
- NOMAD — The Naval Observatory Merged Astrometric Dataset (NOMAD)
- NStars — Nearby Stars Database
- NSV — New Catalogue of Suspected Variable Stars
Read more about this topic: List Of Astronomical Catalogues