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Interacting galaxies · evidence and sources

Arp 273

A distorted spiral and its smaller companion form a rose-like pair of interacting galaxies.

Also known as UGC 1810, UGC 1813, Rose Galaxies.

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

Registered image field

J2000 image-field center RA 2.4 h, Dec 39.4°. Field 2.6 × 2.7 arcminutes; north -33.8° right of vertical.

SourceHubble WFC3
EpochJ2000
LimitThe image field center is not necessarily a galaxy nucleus.
Physical data Catalog

Adopted distance

Approximately 300,000,000 light-years.

SourcePublished distance context
LimitAn approximate reference distance; distances to individual points within the image are not supplied by the observation.
Appearance Reconstructed

Observation-derived appearance

The Hubble composite shows the pair’s projected structure. Their depth separation and orbital history are not measured by this image. 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.

SourceNASA, ESA and the Hubble Heritage Team (STScI/AURA)

What is not measured

  • Appearance: a reconstruction from measurements, not a direct observation. Observation-derived appearance. The Hubble composite shows the pair’s projected structure. Their depth separation and orbital history are not measured by this image. 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.

Sources cited

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