NGC 663

open cluster in the constellation Cassiopeia
Thing open_cluster Q825894
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NGC 663

Summary

NGC 663 is an open cluster[1]. It has Wikipedia articles in 37 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • NGC 663 is credited with the discovery of William Herschel[3].
  • NGC 663's instance of is recorded as open cluster[4].
  • NGC 663's constellation is recorded as Cassiopeia[5].
  • NGC 663's Commons category is recorded as NGC 663[6].
  • NGC 663's parent astronomical body is recorded as Perseus Arm[7].
  • NGC 663's catalog code is recorded as NGC 663[8].
  • NGC 663's catalog code is recorded as OCl 333[9].
  • NGC 663's catalog code is recorded as OCl 333.0[10].
  • NGC 663's catalog code is recorded as C 0142+610[11].
  • NGC 663's catalog code is recorded as OCISM 80[12].
  • NGC 663's catalog code is recorded as [KPS2012] MWSC 0139[13].
  • NGC 663's catalog code is recorded as Collinder 20[14].
  • NGC 663's catalog code is recorded as Melotte 11[15].
  • NGC 663's catalog code is recorded as Caldwell 10[16].
  • NGC 663's time of discovery or invention is recorded as +1787-11-03T00:00:00Z[17].
  • NGC 663's topic's main category is recorded as Category:NGC 663[18].
  • NGC 663's apparent magnitude is recorded as {'unit': '1', 'amount': '+7.78'}[19].
  • NGC 663's apparent magnitude is recorded as {'unit': '1', 'amount': '+7.1'}[20].
  • NGC 663's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-32.3'}[21].
  • NGC 663's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q531', 'amount': '+7900'}[22].
  • NGC 663's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+26.5375'}[23].
  • NGC 663's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+61.2350'}[24].
  • NGC 663's epoch is recorded as J2000.0[25].
  • NGC 663's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-0.96'}[26].
  • NGC 663's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-2.52'}[27].

Body

Definition and Type

NGC 663's instance of is recorded as open cluster[4].

Why It Matters

NGC 663 has Wikipedia articles in 37 language editions, a strong signal of global cultural recognition.[2]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] . SIMBAD. wikidata.org.
  2. [5] . VizieR. wikidata.org.
  3. [3] . cseligman.com. Retrieved . cseligman.com. Provenance: wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . SIMBAD. wikidata.org.
  7. [9] . SIMBAD. wikidata.org.
  8. [10] . SIMBAD. wikidata.org.
  9. [11] . SIMBAD. wikidata.org.
  10. [12] . SIMBAD. wikidata.org.
  11. [13] . SIMBAD. wikidata.org.
  12. [14] . On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters. wikidata.org.
  13. [15] . A Catalogue of Star Clusters shown on Franklin-Adams Chart Plates. wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . cseligman.com. Retrieved . cseligman.com. Provenance: wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . SIMBAD. wikidata.org.
  18. [20] . SIMBAD. wikidata.org.
  19. [21] . A RAVE investigation on Galactic open clusters. wikidata.org.
  20. [22] . New catalogue of optically visible open clusters and candidates. wikidata.org.
  21. [23] . The orbits of open clusters in the Galaxy. wikidata.org.
  22. [24] . The orbits of open clusters in the Galaxy. wikidata.org.
  23. [25] . The orbits of open clusters in the Galaxy. wikidata.org.
  24. [26] . Proper motions of the optically visible open clusters based on the UCAC4 catalog. wikidata.org.
  25. [27] . Proper motions of the optically visible open clusters based on the UCAC4 catalog. wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikidata sitelinks. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). NGC 663. Retrieved May 7, 2026, from https://4ort.xyz/entity/ngc-663
MLA “NGC 663.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/ngc-663.
BibTeX @misc{4ortxyz_ngc-663_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{NGC 663}}, year = {2026}, url = {https://4ort.xyz/entity/ngc-663}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): NGC 663 — https://4ort.xyz/entity/ngc-663 (retrieved 2026-05-07)

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