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Star-forming emission nebula · evidence and sources

NGC 604

Also known as NGC 604 in M33, Triangulum stellar nursery.

Catalog Position basis, the same label the app shows on the selection card.

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Every aspect, with its origin

One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.

ObservedCatalogComputedReconstructedIllustrativeUndocumented
Position Catalog

Image-field position and adopted distance

NGC 604 image-field center is placed at J2000 RA 1.6 h, Dec 30.8° in Triangulum, at an adopted distance of 2,730,000 light-years.

SourceWebb NIRCam: observation, field registration and credit
EpochJ2000
LimitImage north is 65.3 degrees right of vertical. Line-of-sight thickness is illustrative.
Physical data Catalog

Image field at the adopted distance

NGC 604 (star-forming emission nebula; central source NGC 604, embedded stellar population): projected footprint at the adopted distance 1,715.3 × 1,397.7 light-years; outer radius used for arrival 857.7 light-years.

SourceWebb NIRCam: observation, field registration and credit
Methodmeasured sky-plane structure with constrained display depth
Appearance Reconstructed

Sky-plane structure with a display depth

NGC 604 is a star-forming region within M33, not a separate galaxy. The Webb infrared field and approximate 2.73-million-light-year distance follow the 2024 release. Projected structure follows the credited observation at its published angular scale and an approximate adopted distance. Shallow depth is illustrative, not measured tomography. The source palette is preserved; brightness is adjusted for the navigable view.

SourceAdopted distance context
Methodmeasured sky-plane structure with constrained display depth
LimitEmission points and knots are deterministic presentation samples, not individually catalogued gas parcels.
Appearance Reconstructed

Live telescope view: Webb MIRI-led composite

Fewer hot stars compete with the glowing gas and dust, making the large cavity and wispy tendrils easier to trace. Publisher release: 9 March 2024; this is not the observing epoch.

SourceNASA, ESA, CSA, STScI
MethodPublisher AVM tangent-plane coordinates, resampled to the original destination field; approximate display registration.
LimitThis observation covers approximately 76% of the destination’s rectangular source field. Outside its footprint, the original observation remains visible. Field edges and detector gaps are not physical boundaries. Source palettes are display colors; shallow scene depth is illustrative, not measured tomography.

What is not measured

  • Appearance: a reconstruction from measurements, not a direct observation. Sky-plane structure with a display depth. Emission points and knots are deterministic presentation samples, not individually catalogued gas parcels.
  • Appearance: a reconstruction from measurements, not a direct observation. Live telescope view: Webb MIRI-led composite. This observation covers approximately 76% of the destination’s rectangular source field. Outside its footprint, the original observation remains visible. Field edges and detector gaps are not physical boundaries. Source palettes are display colors; shallow scene depth is illustrative, not measured tomography.

Sources cited

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