The list of astronomy acronyms and abbreviations.

All astronomy related acronyms and abbreviations.

Stands For|0Abbreviated As|6Related|1.5k

1,530 entry under topic. ×

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N:
Nova(Celestial object, Celestial objects, Astronomy)
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NEMP:
Nitrogen-Enhanced Metal-Poor(Celestial object, Celestial objects)
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NEO:
Near-Earth Object(Celestial object, Celestial objects, Astronomy)
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NPS:
North Polar Sequence(Celestial object, Celestial objects, Astronomy)
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NS:
Neutron Star(Celestial object, Celestial objects, Astronomy)
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OC:
Open Cluster(Celestial object, Celestial objects, Astronomy)
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OCO:
Oort Cloud Object(Celestial object, Celestial objects, Astronomy)
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PHA:
Potentially Hazardous Asteroid(Celestial object, Celestial objects)
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PMS:
Pre-main Sequence(Celestial object, Celestial objects, Astronomy)
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PN:
Planetary Nebula(Celestial object, Celestial objects, Astronomy)
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PNN:
Planetary Nebula Nucleus(Celestial object, Celestial objects, Astronomy)
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PNNV:
Planetary Nebula Nucleus Variable(Celestial object, Celestial objects)
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PPN:
Proto-Planetary Nebula(Celestial object, Celestial objects, Astronomy)
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PSR:
Pulsar(Celestial object, Celestial objects, Astronomy)
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PVTEL:
PV TELescopii(Celestial object, Celestial objects, Astronomy)
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PWD:
Pre-White Dwarf(Celestial object, Celestial objects, Astronomy)
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PWN:
Pulsar Wind Nebula(Celestial object, Celestial objects, Astronomy)
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Planemo:
Planetary Mass Object(Celestial object, Celestial objects, Astronomy)
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Proplyd:
Protoplanetary Disk(Celestial object, Celestial objects, Astronomy)
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QSO:
Quasi-stellar Object(Celestial object, Celestial objects, Astronomy)
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APASmart Define. (2018). astronomy. Retrieved September 27, 2026, from http://smartdefine.org/astronomy/abbreviations/r/Celestial_object
ChicagoSmart Define. 2018. "astronomy" http://smartdefine.org/astronomy/abbreviations/r/Celestial_object (accessed September 27, 2026).
HarvardSmart Define 2018, astronomy, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/astronomy/abbreviations/r/Celestial_object>.
MLASmart Define. "astronomy" 9 February 2018. Web. 27 September 2026. <http://smartdefine.org/astronomy/abbreviations/r/Celestial_object>