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(53438) 1999 WY9

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Place asteroid Q15164583
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(53438) 1999 WY9

Summary

(53438) 1999 WY9 is an asteroid[1].

Key Facts

  • (53438) 1999 WY9 is credited with the discovery of Takao Kobayashi[2].
  • (53438) 1999 WY9's instance of is recorded as asteroid[3].
  • (53438) 1999 WY9's site of astronomical discovery is recorded as Ōizumi Observatory[4].
  • (53438) 1999 WY9's follows is recorded as (53437) 1999 WL2[5].
  • (53438) 1999 WY9's followed by is recorded as (53439) 1999 WA10[6].
  • (53438) 1999 WY9's minor planet group is recorded as inner asteroid belt[7].
  • (53438) 1999 WY9's parent astronomical body is recorded as Sun[8].
  • (53438) 1999 WY9's provisional designation is recorded as 1999 WY9[9].
  • (53438) 1999 WY9's provisional designation is recorded as 1998 KT2[10].
  • (53438) 1999 WY9's provisional designation is recorded as 1990 KH1[11].
  • (53438) 1999 WY9's time of discovery or invention is recorded as +1999-11-30T00:00:00Z[12].
  • (53438) 1999 WY9's JPL Small-Body Database SPK-ID is recorded as 20053438[13].
  • (53438) 1999 WY9's orbital eccentricity is recorded as {'unit': '1', 'amount': '+0.08272655668669643'}[14].
  • (53438) 1999 WY9's absolute magnitude is recorded as {'unit': '1', 'amount': '+15.12'}[15].
  • (53438) 1999 WY9's orbital inclination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+25.43070421747297'}[16].
  • (53438) 1999 WY9's orbital period is recorded as {'unit': 'http://www.wikidata.org/entity/Q573', 'amount': '+980.700731521468'}[17].
  • (53438) 1999 WY9's rotation period is recorded as {'unit': 'http://www.wikidata.org/entity/Q25235', 'amount': '+5.635'}[18].
  • (53438) 1999 WY9's longitude of ascending node is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+82.54002603498503'}[19].
  • (53438) 1999 WY9's semi-major axis of an orbit is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+1.931784668172989'}[20].
  • (53438) 1999 WY9's apoapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+2.091594562031093'}[21].
  • (53438) 1999 WY9's periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q1811', 'amount': '+1.771974774314885'}[22].
  • (53438) 1999 WY9's argument of periapsis is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+298.9106338477924'}[23].
  • (53438) 1999 WY9's mean anomaly is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+299.2347680628362'}[24].
  • (53438) 1999 WY9's Minor Planet Center body ID is recorded as 53438[25].
  • (53438) 1999 WY9's epoch is recorded as November 21, 2025[26].

Body

Designation and Status

(53438) 1999 WY9's instance of is recorded as asteroid[3].

References

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

Direct Wikidata claims

  1. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [2] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . wikidata.org.
  13. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [25] ↑ . wikidata.org.
  25. [26] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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). (53438) 1999 WY9. Retrieved May 3, 2026, from https://4ort.xyz/entity/-53438-1999-wy9
MLA “(53438) 1999 WY9.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/-53438-1999-wy9.
BibTeX @misc{4ortxyz_-53438-1999-wy9_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(53438) 1999 WY9}}, year = {2026}, url = {https://4ort.xyz/entity/-53438-1999-wy9}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (53438) 1999 WY9 — https://4ort.xyz/entity/-53438-1999-wy9 (retrieved 2026-05-03)

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