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(21028) 1989 TO

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(21028) 1989 TO

Summary

(21028) 1989 TO is an asteroid[1].

Key Facts

  • (21028) 1989 TO is credited with the discovery of Eleanor F. Helin[2].
  • (21028) 1989 TO's instance of is recorded as asteroid[3].
  • (21028) 1989 TO's site of astronomical discovery is recorded as Palomar Observatory[4].
  • (21028) 1989 TO's follows is recorded as (21027) 1989 SR5[5].
  • (21028) 1989 TO's followed by is recorded as Q5185221[6].
  • (21028) 1989 TO's minor planet group is recorded as Mars-crossing asteroid[7].
  • (21028) 1989 TO's parent astronomical body is recorded as Sun[8].
  • (21028) 1989 TO's provisional designation is recorded as 1989 TO[9].
  • (21028) 1989 TO's provisional designation is recorded as 1994 CY2[10].
  • (21028) 1989 TO's time of discovery or invention is recorded as +1989-10-04T00:00:00Z[11].
  • (21028) 1989 TO's JPL Small-Body Database SPK-ID is recorded as 20021028[12].
  • (21028) 1989 TO's orbital eccentricity is recorded as {'amount': '+0.30'}[13].
  • (21028) 1989 TO's orbital eccentricity is recorded as {'amount': '+0.2997698'}[14].
  • (21028) 1989 TO's orbital eccentricity is recorded as {'amount': '+0.2984226283302723'}[15].
  • (21028) 1989 TO's absolute magnitude is recorded as {'amount': '+13.3'}[16].
  • (21028) 1989 TO's absolute magnitude is recorded as {'amount': '+13.4'}[17].
  • (21028) 1989 TO's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+21.78484'}[18].
  • (21028) 1989 TO's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+21.80414324765358'}[19].
  • (21028) 1989 TO's orbital period is recorded as {'unit': 'Q577', 'amount': '+3.56'}[20].
  • (21028) 1989 TO's orbital period is recorded as {'unit': 'Q573', 'amount': '+1301.854497782923'}[21].
  • (21028) 1989 TO's rotation period is recorded as {'unit': 'Q25235', 'amount': '+3.6644'}[22].
  • (21028) 1989 TO's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+340.55736'}[23].
  • (21028) 1989 TO's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+340.4377985208337'}[24].
  • (21028) 1989 TO's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.3329579'}[25].
  • (21028) 1989 TO's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.33332918940683'}[26].

Body

Designation and Status

(21028) 1989 TO's instance of is recorded as asteroid[3].

Related Entities

Eleanor F. Helin

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 . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  14. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [16] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  16. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [18] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  18. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [20] ↑ . minorplanetcenter.net. minorplanetcenter.net. 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] ↑ . 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). (21028) 1989 TO. Retrieved May 3, 2026, from https://4ort.xyz/entity/21028-1989-to
MLA “(21028) 1989 TO.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/21028-1989-to.
BibTeX @misc{4ortxyz_21028-1989-to_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(21028) 1989 TO}}, year = {2026}, url = {https://4ort.xyz/entity/21028-1989-to}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (21028) 1989 TO — https://4ort.xyz/entity/21028-1989-to (retrieved 2026-05-03)

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