HD121840

star in the constellation Centaurus
Thing star Q12064985
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HD121840

Summary

HD121840 is a star[1].

Key Facts

  • HD121840's instance of is recorded as star[2].
  • HD121840's instance of is recorded as infrared source[3].
  • HD121840's constellation is recorded as Centaurus[4].
  • HD121840's spectral class is recorded as ApEuCr(Sr)[5].
  • HD121840's catalog code is recorded as HD 121840[6].
  • HD121840's catalog code is recorded as GSC 09008-00717[7].
  • HD121840's catalog code is recorded as 2MASS J13595004-6203059[8].
  • HD121840's catalog code is recorded as CPD-61 4238[9].
  • HD121840's catalog code is recorded as TYC 9008-717-1[10].
  • HD121840's catalog code is recorded as Gaia DR1 5866273453383375232[11].
  • HD121840's catalog code is recorded as Gaia DR2 5866273453383375232[12].
  • HD121840's apparent magnitude is recorded as {'unit': '1', 'amount': '+9.75'}[13].
  • HD121840's apparent magnitude is recorded as {'unit': '1', 'amount': '+9.413'}[14].
  • HD121840's apparent magnitude is recorded as {'unit': '1', 'amount': '+9.3734'}[15].
  • HD121840's apparent magnitude is recorded as {'unit': '1', 'amount': '+8.826'}[16].
  • HD121840's apparent magnitude is recorded as {'unit': '1', 'amount': '+8.73'}[17].
  • HD121840's apparent magnitude is recorded as {'unit': '1', 'amount': '+8.722'}[18].
  • HD121840's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.5939'}[19].
  • HD121840's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+385.5199'}[20].
  • HD121840's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+209.95852544508230'}[21].
  • HD121840's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-62.05169223723830'}[22].
  • HD121840's epoch is recorded as J2000.0[23].
  • HD121840's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-17.989'}[24].
  • HD121840's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-27.130'}[25].

Body

Definition and Type

Recorded instance of include star[2] and infrared source[3].

References

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

Direct Wikidata claims

  1. [2] . SIMBAD. wikidata.org.
  2. [3] . SIMBAD. wikidata.org.
  3. [4] . VizieR. wikidata.org.
  4. [5] . Q66617329. 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] . The Tycho-2 catalogue of the 2.5 million brightest stars. wikidata.org.
  13. [14] . The Tycho-2 catalogue of the 2.5 million brightest stars. wikidata.org.
  14. [15] . Gaia Data Release 2. wikidata.org.
  15. [16] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  16. [17] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  17. [18] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  18. [19] . Gaia Data Release 2. wikidata.org.
  19. [20] . Gaia Data Release 2. wikidata.org.
  20. [21] . Gaia Data Release 2. wikidata.org.
  21. [22] . Gaia Data Release 2. wikidata.org.
  22. [23] . Gaia Data Release 2. wikidata.org.
  23. [24] . Gaia Data Release 2. wikidata.org.
  24. [25] . Gaia Data Release 2. 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). HD121840. Retrieved May 7, 2026, from https://4ort.xyz/entity/q12064985
MLA “HD121840.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q12064985.
BibTeX @misc{4ortxyz_q12064985_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HD121840}}, year = {2026}, url = {https://4ort.xyz/entity/q12064985}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HD121840 — https://4ort.xyz/entity/q12064985 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q12064985 · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 20d ago · Debessis · 2026-08-18 view diff on Wikidata ↗
    Distance from earth {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount':
    Imported from
    Apparent magnitude {'unit': '1', 'amount': '+9.75'}, {'unit': '1', 'amount': '+9.413'}, {'unit': '1', 'amount': '+9.3734'} +3
    Spectral class ApEuCr(Sr)
    + 13 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-short:0||tt */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/48224|batch #48224]]"
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