HD 20809

star in the constellation Perseus
Thing variable_star Q10849333
Press Enter · cited answer in seconds

HD 20809

Summary

HD 20809 is a variable star[1].

Key Facts

  • HD 20809's instance of is recorded as variable star[2].
  • HD 20809's constellation is recorded as Perseus[3].
  • HD 20809's spectral class is recorded as B5V[4].
  • HD 20809 is part of Q67856749[5].
  • HD 20809 is part of Alpha Persei Cluster[6].
  • HD 20809's catalog code is recorded as HD 20809[7].
  • HD 20809's catalog code is recorded as GCRV 1862[8].
  • HD 20809's catalog code is recorded as GSC 03320-02812[9].
  • HD 20809's catalog code is recorded as HIC 15770[10].
  • HD 20809's catalog code is recorded as HIP 15770[11].
  • HD 20809's catalog code is recorded as HR 1011[12].
  • HD 20809's catalog code is recorded as 2MASS J03231322+4912477[13].
  • HD 20809's catalog code is recorded as PMC 90-93 4657[14].
  • HD 20809's catalog code is recorded as PPM 46103[15].
  • HD 20809's catalog code is recorded as ROT 460[16].
  • HD 20809's catalog code is recorded as SAO 38768[17].
  • HD 20809's catalog code is recorded as TD1 2112[18].
  • HD 20809's catalog code is recorded as UBV 3234[19].
  • HD 20809's catalog code is recorded as UBV M 40920[20].
  • HD 20809's catalog code is recorded as uvby98 520200557[21].
  • HD 20809's catalog code is recorded as YPAC 90[22].
  • HD 20809's catalog code is recorded as AG+49 391[23].
  • HD 20809's catalog code is recorded as BD+48 899[24].
  • HD 20809's catalog code is recorded as HGAM 210[25].
  • HD 20809's catalog code is recorded as TYC 3320-2812-1[26].

Body

Definition and Type

HD 20809's instance of is recorded as variable star[2].

Use and Application

Part of include Q67856749[5] and Alpha Persei Cluster[6], an open cluster[27].

References

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

Direct Wikidata claims

  1. [2] . General Catalogue of Variable Stars. wikidata.org.
  2. [3] . VizieR. vizier.u-strasbg.fr. Provenance: wikidata.org.
  3. [4] . The Uppsala spectral classification. wikidata.org.
  4. [5] . SIMBAD. wikidata.org.
  5. [6] . SIMBAD. wikidata.org.
  6. [7] . SIMBAD. wikidata.org.
  7. [8] . SIMBAD. wikidata.org.
  8. [9] . SIMBAD. wikidata.org.
  9. [10] . SIMBAD. wikidata.org.
  10. [11] . SIMBAD. wikidata.org.
  11. [12] . SIMBAD. wikidata.org.
  12. [13] . SIMBAD. wikidata.org.
  13. [14] . SIMBAD. wikidata.org.
  14. [15] . SIMBAD. wikidata.org.
  15. [16] . SIMBAD. wikidata.org.
  16. [17] . SIMBAD. wikidata.org.
  17. [18] . SIMBAD. wikidata.org.
  18. [19] . SIMBAD. wikidata.org.
  19. [20] . SIMBAD. wikidata.org.
  20. [21] . SIMBAD. wikidata.org.
  21. [22] . SIMBAD. wikidata.org.
  22. [23] . SIMBAD. wikidata.org.
  23. [24] . SIMBAD. wikidata.org.
  24. [25] . SIMBAD. wikidata.org.
  25. [26] . SIMBAD. wikidata.org.

Inline context (facts about related entities)

  1. [27] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. 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). HD 20809. Retrieved May 7, 2026, from https://4ort.xyz/entity/q10849333
MLA “HD 20809.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q10849333.
BibTeX @misc{4ortxyz_q10849333_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HD 20809}}, year = {2026}, url = {https://4ort.xyz/entity/q10849333}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HD 20809 — https://4ort.xyz/entity/q10849333 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q10849333 · Last refreshed: