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(18552) 1997 AM21

minor planet
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(18552) 1997 AM21

Summary

(18552) 1997 AM21 is an asteroid[1].

Key Facts

  • (18552) 1997 AM21 is credited with the discovery of Yoshisada Shimizu[2].
  • (18552) 1997 AM21 is credited with the discovery of Takeshi Urata[3].
  • (18552) 1997 AM21's instance of is recorded as asteroid[4].
  • (18552) 1997 AM21's site of astronomical discovery is recorded as Nachi-Katsuura Observatory[5].
  • (18552) 1997 AM21's follows is recorded as 18551 Bovet[6].
  • (18552) 1997 AM21's followed by is recorded as 18553 Kinkakuji[7].
  • (18552) 1997 AM21's minor planet group is recorded as asteroid belt[8].
  • (18552) 1997 AM21's parent astronomical body is recorded as Sun[9].
  • (18552) 1997 AM21's provisional designation is recorded as 1997 AM21[10].
  • (18552) 1997 AM21's time of discovery or invention is recorded as +1997-01-13T00:00:00Z[11].
  • (18552) 1997 AM21's Freebase ID is recorded as /m/0h7m01v[12].
  • (18552) 1997 AM21's JPL Small-Body Database SPK-ID is recorded as 20018552[13].
  • (18552) 1997 AM21's orbital eccentricity is recorded as {'amount': '+0.11'}[14].
  • (18552) 1997 AM21's orbital eccentricity is recorded as {'amount': '+0.1108960'}[15].
  • (18552) 1997 AM21's orbital eccentricity is recorded as {'amount': '+0.1084598835544924'}[16].
  • (18552) 1997 AM21's absolute magnitude is recorded as {'amount': '+13.7'}[17].
  • (18552) 1997 AM21's absolute magnitude is recorded as {'amount': '+13.85'}[18].
  • (18552) 1997 AM21's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+10.19449'}[19].
  • (18552) 1997 AM21's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+10.19370205472354'}[20].
  • (18552) 1997 AM21's orbital period is recorded as {'unit': 'Q577', 'amount': '+4.6'}[21].
  • (18552) 1997 AM21's orbital period is recorded as {'unit': 'Q573', 'amount': '+1682.270189499084'}[22].
  • (18552) 1997 AM21's rotation period is recorded as {'unit': 'Q25235', 'amount': '+100.142'}[23].
  • (18552) 1997 AM21's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+114.07703'}[24].
  • (18552) 1997 AM21's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+113.9351617469407'}[25].
  • (18552) 1997 AM21's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.7675260'}[26].

Body

Designation and Status

(18552) 1997 AM21's instance of is recorded as asteroid[4].

References

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

Direct Wikidata claims

  1. [4] ↑ . 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. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [9] ↑ . 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] ↑ . wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . wikidata.org.
  13. [14] ↑ . 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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [24] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  24. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [26] ↑ . minorplanetcenter.net. minorplanetcenter.net. 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). (18552) 1997 AM21. Retrieved May 3, 2026, from https://4ort.xyz/entity/18552-1997-am21
MLA “(18552) 1997 AM21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/18552-1997-am21.
BibTeX @misc{4ortxyz_18552-1997-am21_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(18552) 1997 AM21}}, year = {2026}, url = {https://4ort.xyz/entity/18552-1997-am21}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (18552) 1997 AM21 — https://4ort.xyz/entity/18552-1997-am21 (retrieved 2026-05-03)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 29d ago · Shuaib-bot bot · 2026-05-04 view diff on Wikidata ↗
    Orbital period → {'unit': 'Q577', 'amount': '+4.6'}, {'unit': 'Q573', 'amount': '+1682.270189499084'}
    Argument of periapsis → {'unit': 'Q28390', 'amount': '+346.08933'}, {'unit': 'Q28390', 'amount': '+345.151284942494'}
    Mean anomaly → {'unit': 'Q28390', 'amount': '+320.63684'}, {'unit': 'Q28390', 'amount': '+115.39742647442'}
    Followed by → —
    + 22 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.