NGC 1999

Scientific overview

NGC 1999 is a reflection nebula in the constellation Orion. It shines at apparent magnitude 9.5 and spans about 2 arcminutes of sky.

Difficulty

Small telescope

Recommended equipment

≈ 80–100 mm telescope

Best observed

Winter (evening sky)

Best hemisphere

Both (equatorial)

Guidance follows standard observing practice, derived from the object's real magnitude and position. A dark, moonless sky always helps.

RA / Dec

5.607h / -6.7159°

Hemisphere

Both

Season

Winter

Object	Type	Mag	Size (′)
Lower SwordNGC 1980	Cluster with nebulosity	2.5	9.3
Great Orion NebulaM 42 · NGC 1976	Cluster with nebulosity	4	90
Upper SwordNGC 1981	Cluster with nebulosity	4.2	9
NGC 1788NGC 1788	Reflection nebula	5.8	2
NGC 2169NGC 2169	Open cluster	5.9	7.2
NGC 1662NGC 1662	Open cluster	6.4	13.8
NGC 2175NGC 2175	Cluster with nebulosity	6.8	5.4
NGC 1973NGC 1973	Nebula	7	5

Facts on this topic will be cited from these primary and reference sources.

OpenNGCOpenNGC (M. Verga) — NGC/IC, Messier, and Caldwell catalogue data
Openly-licensed deep-sky catalogue: object types, positions, magnitudes, sizes, morphology, and cross-identifiers.

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