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Q77971821

horizontal branch star in the constellation Hercules
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Q77971821

Summary

Q77971821 is a horizontal branch star[1].

Key Facts

  • Q77971821's instance of is recorded as horizontal branch star[2].
  • Q77971821's constellation is recorded as Hercules[3].
  • Q77971821's catalog code is recorded as SDSS J163604.45+123640.8[4].
  • Q77971821's catalog code is recorded as Gaia DR2 4459606208639236864[5].
  • Q77971821's apparent magnitude is recorded as {'unit': '1', 'amount': '+20.533'}[6].
  • Q77971821's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.345'}[7].
  • Q77971821's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.585'}[8].
  • Q77971821's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.774'}[9].
  • Q77971821's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.793'}[10].
  • Q77971821's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.5215'}[11].
  • Q77971821's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-236.0'}[12].
  • Q77971821's metallicity is recorded as {'unit': '1', 'amount': '-1.75'}[13].
  • Q77971821's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q11929860', 'amount': '+52.5'}[14].
  • Q77971821's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+249.01856013649010'}[15].
  • Q77971821's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+12.61132434594230'}[16].
  • Q77971821's epoch is recorded as J2000.0[17].
  • Q77971821's effective temperature is recorded as {'unit': 'http://www.wikidata.org/entity/Q11579', 'amount': '+9596'}[18].
  • Q77971821's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-0.394'}[19].
  • Q77971821's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-1.147'}[20].

Body

Definition and Type

Q77971821's instance of is recorded as horizontal branch star[2].

References

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

Direct Wikidata claims

  1. [2] ↑ . SIMBAD. wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . SIMBAD. wikidata.org.
  4. [5] ↑ . SIMBAD. wikidata.org.
  5. [6] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  6. [7] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  7. [8] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  8. [9] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  9. [10] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  10. [11] ↑ . Gaia Data Release 2. wikidata.org.
  11. [12] ↑ . The Milky Way's circular velocity curve to 60 kpc and an estimate of the dark matter halo mass from the kinematics of ~2400 SDSS blue horizontal-branch stars. wikidata.org.
  12. [13] ↑ . The Milky Way's circular velocity curve to 60 kpc and an estimate of the dark matter halo mass from the kinematics of ~2400 SDSS blue horizontal-branch stars. wikidata.org.
  13. [14] ↑ . The Milky Way's circular velocity curve to 60 kpc and an estimate of the dark matter halo mass from the kinematics of ~2400 SDSS blue horizontal-branch stars. wikidata.org.
  14. [15] ↑ . Gaia Data Release 2. wikidata.org.
  15. [16] ↑ . Gaia Data Release 2. wikidata.org.
  16. [17] ↑ . Gaia Data Release 2. wikidata.org.
  17. [18] ↑ . The Milky Way's circular velocity curve to 60 kpc and an estimate of the dark matter halo mass from the kinematics of ~2400 SDSS blue horizontal-branch stars. wikidata.org.
  18. [19] ↑ . Gaia Data Release 2. wikidata.org.
  19. [20] ↑ . 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). Q77971821. Retrieved May 7, 2026, from https://4ort.xyz/entity/q77971821
MLA “Q77971821.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q77971821.
BibTeX @misc{4ortxyz_q77971821_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q77971821}}, year = {2026}, url = {https://4ort.xyz/entity/q77971821}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q77971821 — https://4ort.xyz/entity/q77971821 (retrieved 2026-05-07)

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