HD 137509

star in the constellation Apus
Thing star Q6036947
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HD 137509

Summary

HD 137509 is a star[1]. It has Wikipedia articles in 7 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • HD 137509's instance of is recorded as star[3].
  • HD 137509's constellation is recorded as Apus[4].
  • HD 137509's spectral class is recorded as Ap(SiCrFe)[5].
  • HD 137509's catalog code is recorded as GSC 09263-01520[6].
  • HD 137509's catalog code is recorded as HD 137509[7].
  • HD 137509's catalog code is recorded as SAO 257290[8].
  • HD 137509's catalog code is recorded as HIP 76011[9].
  • HD 137509's catalog code is recorded as 2MASS J15312711-7103436[10].
  • HD 137509's catalog code is recorded as CD-70 1302[11].
  • HD 137509's catalog code is recorded as CPC 21.1 2930[12].
  • HD 137509's catalog code is recorded as CPD-70 2069[13].
  • HD 137509's catalog code is recorded as GC 20810[14].
  • HD 137509's catalog code is recorded as HIC 76011[15].
  • HD 137509's catalog code is recorded as PPM 372701[16].
  • HD 137509's catalog code is recorded as TD1 18235[17].
  • HD 137509's catalog code is recorded as TYC 9263-1520-1[18].
  • HD 137509's catalog code is recorded as NN Aps[19].
  • HD 137509's catalog code is recorded as uvby98 100137509[20].
  • HD 137509's catalog code is recorded as Gaia DR2 5795787581162256384[21].
  • HD 137509's type of variable star is recorded as Alpha² Canum Venaticorum variable[22].
  • HD 137509's apparent magnitude is recorded as {'unit': '1', 'amount': '+6.76'}[23].
  • HD 137509's apparent magnitude is recorded as {'unit': '1', 'amount': '+6.87'}[24].
  • HD 137509's apparent magnitude is recorded as {'unit': '1', 'amount': '+6.8338'}[25].
  • HD 137509's apparent magnitude is recorded as {'unit': '1', 'amount': '+7.022'}[26].
  • HD 137509's apparent magnitude is recorded as {'unit': '1', 'amount': '+7.133'}[27].

Body

Definition and Type

HD 137509's instance of is recorded as star[3].

Why It Matters

HD 137509 has Wikipedia articles in 7 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. [3] . SIMBAD. wikidata.org.
  2. [4] . VizieR. wikidata.org.
  3. [5] . Q66617329. wikidata.org.
  4. [6] . SIMBAD. wikidata.org.
  5. [7] . SIMBAD. 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] . SIMBAD. wikidata.org.
  13. [15] . SIMBAD. wikidata.org.
  14. [16] . SIMBAD. wikidata.org.
  15. [17] . SIMBAD. wikidata.org.
  16. [18] . SIMBAD. wikidata.org.
  17. [19] . SIMBAD. wikidata.org.
  18. [20] . SIMBAD. wikidata.org.
  19. [21] . SIMBAD. wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . The Tycho-2 catalogue of the 2.5 million brightest stars. wikidata.org.
  22. [24] . Catalogue of Stellar Photometry in Johnson's 11-color system. wikidata.org.
  23. [25] . Gaia Data Release 2. wikidata.org.
  24. [26] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  25. [27] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). 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). HD 137509. Retrieved May 7, 2026, from https://4ort.xyz/entity/hd-137509
MLA “HD 137509.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/hd-137509.
BibTeX @misc{4ortxyz_hd-137509_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HD 137509}}, year = {2026}, url = {https://4ort.xyz/entity/hd-137509}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HD 137509 — https://4ort.xyz/entity/hd-137509 (retrieved 2026-05-07)

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