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Q77981820

horizontal branch star in the constellation Hydra
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Q77981820

Summary

Q77981820 is a horizontal branch star[1].

Key Facts

  • Q77981820's instance of is recorded as horizontal branch star[2].
  • Q77981820's constellation is recorded as Hydra[3].
  • Q77981820's catalog code is recorded as SDSS J081527.77+060146.8[4].
  • Q77981820's catalog code is recorded as 2MASS J08152776+0601468[5].
  • Q77981820's catalog code is recorded as Gaia DR2 3096459734364611584[6].
  • Q77981820's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.144'}[7].
  • Q77981820's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.016'}[8].
  • Q77981820's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.244'}[9].
  • Q77981820's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.429'}[10].
  • Q77981820's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.547'}[11].
  • Q77981820's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.97'}[12].
  • Q77981820's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.053'}[13].
  • Q77981820's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.1589'}[14].
  • Q77981820's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+0.0550'}[15].
  • Q77981820's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+78.0'}[16].
  • Q77981820's metallicity is recorded as {'unit': '1', 'amount': '-2.01'}[17].
  • Q77981820's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q11929860', 'amount': '+11.7'}[18].
  • Q77981820's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+123.86570509866050'}[19].
  • Q77981820's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+6.02969286648150'}[20].
  • Q77981820's epoch is recorded as J2000.0[21].
  • Q77981820's effective temperature is recorded as {'unit': 'http://www.wikidata.org/entity/Q11579', 'amount': '+9154'}[22].
  • Q77981820's surface gravity is recorded as {'unit': 'http://www.wikidata.org/entity/Q39699418', 'amount': '+1900'}[23].
  • Q77981820's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-2.724'}[24].
  • Q77981820's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+2.455'}[25].

Body

Definition and Type

Q77981820'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] ↑ . SIMBAD. wikidata.org.
  6. [7] ↑ . The SDSS Photometric Catalog, Release 8. wikidata.org.
  7. [8] ↑ . The SDSS Photometric Catalog, Release 8. wikidata.org.
  8. [9] ↑ . The SDSS Photometric Catalog, Release 8. wikidata.org.
  9. [10] ↑ . The SDSS Photometric Catalog, Release 8. wikidata.org.
  10. [11] ↑ . The SDSS Photometric Catalog, Release 8. wikidata.org.
  11. [12] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  12. [13] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  13. [14] ↑ . Gaia Data Release 2. wikidata.org.
  14. [15] ↑ . Gaia Data Release 2. wikidata.org.
  15. [16] ↑ . Quantifying kinematic substructure in the Milky Way's stellar halo. wikidata.org.
  16. [17] ↑ . 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.
  17. [18] ↑ . Quantifying kinematic substructure in the Milky Way's stellar halo. 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] ↑ . 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.
  22. [23] ↑ . 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.
  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). Q77981820. Retrieved May 7, 2026, from https://4ort.xyz/entity/q77981820
MLA “Q77981820.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q77981820.
BibTeX @misc{4ortxyz_q77981820_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q77981820}}, year = {2026}, url = {https://4ort.xyz/entity/q77981820}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q77981820 — https://4ort.xyz/entity/q77981820 (retrieved 2026-05-07)

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