Orion Nebula (M42, NGC 1976) is catalogued in this registry as a nebula, held in the frame of Milky Way, from Naked-eye deep-sky objects (curated).
Registry id DS_M42 ·
source layer deepsky ·
provenance PROCESSED — derived deterministically from source catalogues (unit, frame and epoch conversions, cross-source reconciliation) — no value invented
Open Orion Nebula (M42, NGC 1976) in the live scene → The scene composes a position for any date and is where a figure becomes a picture. It downloads the whole catalogue first: measured against the built product, an object outside the core resolves after about 16 s over a local network and about 147 s over a 4 Mbit link, having transferred roughly 70 MB. If you cannot wait that long, this page is the answer.
| Quantity | Value | Uncertainty | Source |
|---|---|---|---|
| Radius | 1.20774×10^17 m (807324 au) | no published uncertainty in this registry | Naked-eye deep-sky objects (curated) |
Each row carries its own uncertainty and its own source. Where a row says no uncertainty is published, that is what the catalogue says — it is not a claim that the value is exact.
| Kind | nebula |
|---|---|
| Origin | natural |
Nebula — naked-eye deep-sky object. Distance 414 pc. Integrated V ≈ 4.0. Extent: 65′ (classical catalogued apparent extent (~65′ across)) ≈ 3.9 pc radius at the published distance. The nearest massive star-forming region, a naked-eye glow in Orion's sword. Distance 414 ± 7 pc by VLBI parallax of its member stars [Menten et al. 2007].
Reproduced as the source wrote it. Author-year citations link to their DOI where one is registered.
These are absences in the catalogues aggregated here, not measurements of zero, and not statements that the quantity is unknown to science:
| Database | Naked-eye deep-sky objects (curated) |
|---|---|
| Authority | Cantat-Gaudin et al. 2020 (Gaia DR2 cluster census, VizieR J/A+A/640/A1) · Harris 1996 (globular-cluster catalogue, VizieR VII/202) · Melis et al. 2014 (Pleiades VLBI) · Menten et al. 2007 (Orion VLBI) · Göppl & Preibisch 2022 (Carina, Gaia EDR3); values verbatim, per-row citations in notes |
| Licence | Public astronomical facts (positions/distances/sizes/magnitudes), cited per row |
| How it entered | Curated data-as-code (src/ingest/catalogs/deepsky.ts) |
| Coverage | 31 classical naked-eye deep-sky objects — 20 open clusters (Pleiades · Hyades · Beehive · Ptolemy · Double Cluster · NGC 6231 …), 9 globular clusters (ω Cen · 47 Tuc · M13 …), 2 nebulae (Orion · Carina); names carry M/NGC/IC designations so the sky-culture deep-sky join attaches cultural names |
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