Celestial Object Abbreviations and Acronyms
- NEONear-Earth Object
- NEONear-Earth Object - Non-combatant Evacuation Operations
- NGVLANext-Generation Very Large Array
- NICMOSNear Iffrared Camera/Multi Object Spectrometer
- NLAGNNarrow-Line Agn
- NPSNorth Polar Sequence
- NRSignal-To-Nosie Ratio
- NSNeutron Star
- OCOpen Cluster
- OCOOort Cloud Object
- OSIRIS-REXOrigins Spectral Interpretation Resource Identification Security Regolith Explorer
- OSSOhio Sky Survey
- OVVAn Optically Violgnt Variable Quasar.
- OVVOptically Violene Variable
- OVVOptically Violent Variable
- PHAPotentially Hazardous Asteroid
- PKSRefers To Parkes Observatory
- PLANEMOPlanetary Mass Object
- PMSPre–Main Sequence
- PNPlanetary Nebula
Last updated: — Total entries: 297