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.
Observation guide
Guidance follows standard observing practice, derived from the object's real magnitude and position. A dark, moonless sky always helps.
Location in the sky
Precision measurements
Distances and velocities from SIMBAD · NGC 1999
| Right ascension (ICRS) | 84.104167 deg | SIMBAD · measured |
| Declination (ICRS) | -6.711667 deg | SIMBAD · measured |
Full field-level provenance
- Right ascension (ICRS): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · ra · 2003A&A...399..141M · direct catalogue measurement · retrieved 2026-07-11
- Declination (ICRS): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · dec · 2003A&A...399..141M · direct catalogue measurement · retrieved 2026-07-11
Physical size is derived from the OpenNGC angular size and the catalogued distance (small-angle: size = angle × distance). This is a Galactic object: its Doppler shift is shown as a radial velocity, not a cosmological redshift. Fields a source did not provide are omitted, never invented.
Other objects in Orion
| 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 |
Sources
The primary and reference sources this topic draws on.
- OpenNGCOpenNGC (M. Verga) — NGC/IC, Messier, and Caldwell catalogue data
Openly-licensed deep-sky catalogue: object types, positions, magnitudes, sizes, morphology, and cross-identifiers.