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(21044) 1990 SE1

minor planet
Place asteroid Q4542194
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(21044) 1990 SE1

Summary

(21044) 1990 SE1 is an asteroid[1]. (21044) 1990 SE1 has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • (21044) 1990 SE1 is credited with the discovery of Henry E. Holt[3].
  • (21044) 1990 SE1's instance of is recorded as asteroid[4].
  • (21044) 1990 SE1's site of astronomical discovery is recorded as Palomar Observatory[5].
  • (21044) 1990 SE1 followed (21043) 1990 RT2[6].
  • (21044) 1990 SE1 was followed by (21045) 1990 SQ1[7].
  • (21044) 1990 SE1's minor planet group is recorded as asteroid belt[8].
  • (21044) 1990 SE1's parent astronomical body is recorded as Sun[9].
  • (21044) 1990 SE1's provisional designation is recorded as 1990 SE1[10].
  • (21044) 1990 SE1's provisional designation is recorded as 1998 RF41[11].
  • (21044) 1990 SE1's time of discovery or invention is recorded as September 16, 1990[12].
  • (21044) 1990 SE1's orbital eccentricity is recorded as {'amount': '+0.17'}[13].
  • (21044) 1990 SE1's orbital eccentricity is recorded as {'amount': '+0.1734104'}[14].
  • (21044) 1990 SE1's orbital eccentricity is recorded as {'amount': '+0.1756268842428431'}[15].
  • (21044) 1990 SE1's absolute magnitude is recorded as {'amount': '+14.2'}[16].
  • (21044) 1990 SE1's absolute magnitude is recorded as {'amount': '+14.4'}[17].
  • (21044) 1990 SE1's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+13.00011'}[18].
  • (21044) 1990 SE1's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+12.99197077155351'}[19].
  • (21044) 1990 SE1's orbital period is recorded as {'unit': 'Q577', 'amount': '+4.07'}[20].
  • (21044) 1990 SE1's orbital period is recorded as {'unit': 'Q573', 'amount': '+1483.541025890086'}[21].
  • (21044) 1990 SE1's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+346.40678'}[22].
  • (21044) 1990 SE1's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+346.2619023093492'}[23].
  • (21044) 1990 SE1's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.5471489'}[24].
  • (21044) 1990 SE1's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.545662095068074'}[25].
  • (21044) 1990 SE1's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+2.989'}[26].
  • (21044) 1990 SE1's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+2.992748797159988'}[27].

Body

Designation and Status

(21044) 1990 SE1's instance of is recorded as asteroid[4].

Why It Matters

(21044) 1990 SE1 has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[2]

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. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  13. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [16] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  15. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [18] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  17. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [20] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  19. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [22] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  21. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [24] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  23. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [26] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  25. [27] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata sitelinks. 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). (21044) 1990 SE1. Retrieved May 3, 2026, from https://4ort.xyz/entity/21044-1990-se1
MLA “(21044) 1990 SE1.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/21044-1990-se1.
BibTeX @misc{4ortxyz_21044-1990-se1_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(21044) 1990 SE1}}, year = {2026}, url = {https://4ort.xyz/entity/21044-1990-se1}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (21044) 1990 SE1 — https://4ort.xyz/entity/21044-1990-se1 (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. 18d ago · KaleemBot bot · 2026-05-15 view diff on Wikidata ↗
    Instance of → —
    Orbital eccentricity → {'amount': '+0.17'}, {'amount': '+0.1734104'}, {'amount': '+0.1756268842428431'}
    Discoverer or inventor → Henry E. Holt
    Time of periapsis → {'unit': 'Q14267', 'amount': '+2461278.013336702'}
    + 21 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:(21044) 1990 ایس ای 1]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.