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(16978) 1999 AN4

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(16978) 1999 AN4

Summary

(16978) 1999 AN4 is an asteroid[1].

Key Facts

  • (16978) 1999 AN4 is credited with the discovery of Takao Kobayashi[2].
  • (16978) 1999 AN4's instance of is recorded as asteroid[3].
  • (16978) 1999 AN4's site of astronomical discovery is recorded as Ōizumi Observatory[4].
  • (16978) 1999 AN4's follows is recorded as (16977) 1999 AS3[5].
  • (16978) 1999 AN4's followed by is recorded as (16979) 1999 AO4[6].
  • (16978) 1999 AN4's minor planet group is recorded as asteroid belt[7].
  • (16978) 1999 AN4's parent astronomical body is recorded as Sun[8].
  • (16978) 1999 AN4's provisional designation is recorded as 1999 AN4[9].
  • (16978) 1999 AN4's time of discovery or invention is recorded as +1999-01-11T00:00:00Z[10].
  • (16978) 1999 AN4's JPL Small-Body Database SPK-ID is recorded as 20016978[11].
  • (16978) 1999 AN4's orbital eccentricity is recorded as {'amount': '+0.24'}[12].
  • (16978) 1999 AN4's orbital eccentricity is recorded as {'amount': '+0.2363620'}[13].
  • (16978) 1999 AN4's orbital eccentricity is recorded as {'amount': '+0.237925625901737'}[14].
  • (16978) 1999 AN4's absolute magnitude is recorded as {'amount': '+14.1'}[15].
  • (16978) 1999 AN4's absolute magnitude is recorded as {'amount': '+14.36'}[16].
  • (16978) 1999 AN4's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+22.25712'}[17].
  • (16978) 1999 AN4's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+22.24544167772097'}[18].
  • (16978) 1999 AN4's orbital period is recorded as {'unit': 'Q577', 'amount': '+3.58'}[19].
  • (16978) 1999 AN4's orbital period is recorded as {'unit': 'Q573', 'amount': '+1307.566161116532'}[20].
  • (16978) 1999 AN4's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+316.01589'}[21].
  • (16978) 1999 AN4's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+315.9225041872368'}[22].
  • (16978) 1999 AN4's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.3408623'}[23].
  • (16978) 1999 AN4's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.340148929823552'}[24].
  • (16978) 1999 AN4's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+2.894'}[25].
  • (16978) 1999 AN4's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+2.896930328655101'}[26].

Body

Designation and Status

(16978) 1999 AN4'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 . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  13. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [15] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  15. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [17] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  17. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [19] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  19. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [21] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  21. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [23] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  23. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [25] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: 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). (16978) 1999 AN4. Retrieved May 3, 2026, from https://4ort.xyz/entity/16978-1999-an4
MLA “(16978) 1999 AN4.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/16978-1999-an4.
BibTeX @misc{4ortxyz_16978-1999-an4_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(16978) 1999 AN4}}, year = {2026}, url = {https://4ort.xyz/entity/16978-1999-an4}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (16978) 1999 AN4 — https://4ort.xyz/entity/16978-1999-an4 (retrieved 2026-05-03)

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