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Q77987545

horizontal branch star in the constellation Corona Borealis
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Q77987545

Summary

Q77987545 is a horizontal branch star[1].

Key Facts

  • Q77987545's instance of is recorded as horizontal branch star[2].
  • Q77987545's constellation is recorded as Corona Borealis[3].
  • Q77987545's catalog code is recorded as SDSS J155723.08+305709.5[4].
  • Q77987545's catalog code is recorded as SDSS J155723.09+305709.5[5].
  • Q77987545's catalog code is recorded as Gaia DR2 1321313157806630784[6].
  • Q77987545's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.439'}[7].
  • Q77987545's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.069'}[8].
  • Q77987545's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.920'}[9].
  • Q77987545's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.152'}[10].
  • Q77987545's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.330'}[11].
  • Q77987545's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.0739'}[12].
  • Q77987545's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-93.6'}[13].
  • Q77987545's metallicity is recorded as {'unit': '1', 'amount': '-1.67'}[14].
  • Q77987545's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q11929860', 'amount': '+17.6'}[15].
  • Q77987545's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+239.34621394271070'}[16].
  • Q77987545's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+30.95265584601260'}[17].
  • Q77987545's epoch is recorded as J2000.0[18].
  • Q77987545's effective temperature is recorded as {'unit': 'http://www.wikidata.org/entity/Q11579', 'amount': '+8621'}[19].
  • Q77987545's surface gravity is recorded as {'unit': 'http://www.wikidata.org/entity/Q39699418', 'amount': '+2140'}[20].
  • Q77987545's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-2.435'}[21].
  • Q77987545's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-2.981'}[22].

Body

Definition and Type

Q77987545'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 7. 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] ↑ . Gaia Data Release 2. wikidata.org.
  12. [13] ↑ . Quantifying kinematic substructure in the Milky Way's stellar halo. 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] ↑ . Quantifying kinematic substructure in the Milky Way's stellar halo. wikidata.org.
  15. [16] ↑ . Gaia Data Release 2. wikidata.org.
  16. [17] ↑ . Gaia Data Release 2. wikidata.org.
  17. [18] ↑ . Gaia Data Release 2. wikidata.org.
  18. [19] ↑ . 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.
  19. [20] ↑ . 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.
  20. [21] ↑ . Gaia Data Release 2. wikidata.org.
  21. [22] ↑ . 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). Q77987545. Retrieved May 7, 2026, from https://4ort.xyz/entity/q77987545
MLA “Q77987545.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q77987545.
BibTeX @misc{4ortxyz_q77987545_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q77987545}}, year = {2026}, url = {https://4ort.xyz/entity/q77987545}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q77987545 — https://4ort.xyz/entity/q77987545 (retrieved 2026-05-07)

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