HD 21620

star in the constellation Perseus
Thing algol_variable Q10849500
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HD 21620

Summary

HD 21620 is an Algol variable[1].

Key Facts

  • HD 21620's instance of is recorded as Algol variable[2].
  • HD 21620's instance of is recorded as emission-line star[3].
  • HD 21620's constellation is recorded as Perseus[4].
  • HD 21620's spectral class is recorded as A0Vn[5].
  • HD 21620's catalog code is recorded as HD 21620[6].
  • HD 21620's catalog code is recorded as CSV 308[7].
  • HD 21620's catalog code is recorded as GCRV 1934[8].
  • HD 21620's catalog code is recorded as GSC 03320-02813[9].
  • HD 21620's catalog code is recorded as HIC 16424[10].
  • HD 21620's catalog code is recorded as HIP 16424[11].
  • HD 21620's catalog code is recorded as HR 1056[12].
  • HD 21620's catalog code is recorded as 2MASS J03312932+4912352[13].
  • HD 21620's catalog code is recorded as NSV 1173[14].
  • HD 21620's catalog code is recorded as PPM 46275[15].
  • HD 21620's catalog code is recorded as ROT 511[16].
  • HD 21620's catalog code is recorded as SAO 38906[17].
  • HD 21620's catalog code is recorded as TD1 2236[18].
  • HD 21620's catalog code is recorded as uvby98 520200934[19].
  • HD 21620's catalog code is recorded as AG+49 425[20].
  • HD 21620's catalog code is recorded as BD+48 938[21].
  • HD 21620's catalog code is recorded as TYC 3320-2813-1[22].
  • HD 21620's catalog code is recorded as Gaia DR1 249350098805616512[23].
  • HD 21620's catalog code is recorded as WEB 3139[24].
  • HD 21620's catalog code is recorded as Gaia DR2 249350103106450048[25].
  • HD 21620's type of variable star is recorded as Algol variable[26].

Body

Definition and Type

Recorded instance of include Algol variable[2] and emission-line star[3].

References

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

Direct Wikidata claims

  1. [2] . New Catalogue of Suspected Variable Stars. wikidata.org.
  2. [3] . SIMBAD. wikidata.org.
  3. [4] . VizieR. vizier.u-strasbg.fr. Provenance: wikidata.org.
  4. [5] . A study of the bright A stars. I. A catalogue of spectral classifications. 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] . Catalogue of suspected variable stars. Moscow, Acad. of Sciences USSR Shternberg,1951 (1981). wikidata.org.

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 21620. Retrieved May 7, 2026, from https://4ort.xyz/entity/q10849500
MLA “HD 21620.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q10849500.
BibTeX @misc{4ortxyz_q10849500_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HD 21620}}, year = {2026}, url = {https://4ort.xyz/entity/q10849500}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HD 21620 — https://4ort.xyz/entity/q10849500 (retrieved 2026-05-07)

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