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5581 Mitsuko

asteroid
Place Asteroid Q692280

Facts

22 properties

Identity

Instance of
asteroid
More facts +21
Follows
5580 Sharidake[5]
Followed by
(5582) 1989 CU8[6]
Absolute magnitude
14.1, 14.19[16][17]
Apoapsis
2.761, 2.756771547800746
Argument of periapsis
35.39233, 35.11059700880936
Discoverer or inventor
Masayuki Iwamoto, Toshimasa Furuta[2][3]
Epoch
November 21, 2025
Longitude of ascending node
165.47312, 165.3336163944527[22][23]
Mean anomaly
35.04342, 319.4486786558478
Minor planet group
asteroid belt[7]
Orbital eccentricity
0.16 (0.16–0.16, n=3)[13][14][15]
Orbital inclination
2.48638, 2.4872760245163[18][19]
Orbital period
3.67, 1342.07974482488[20][21]
Parent astronomical body
Sun[8]
Periapsis
2.0008501, 2.005526720962835
Provisional designation
1976 UC10, 1989 CY1[9][10]
Semi-major axis of an orbit
2.3809112, 2.38114913438179
Significant event
naming[12]
Site of astronomical discovery
Tokushima[4]
Time of discovery or invention
February 10, 1989[11]
Time of periapsis
2461151.675297227
🏷️ Also known as
en 5581 Mitsuko en Mitsuko de (5581) Mitsuko fa سیارک ۵۵۸۱ ja 三子 ru Mitsuko ru Мицуко ru (5581) 1989 CY1 ru 1976 UC10 ru 1989 CY1 ru (5581) Mitsuko ru (5581) Мицуко uk 5581 Міцуко zh 小行星5581
🔖 Identifiers · 3
Freebase ID
/m/03y7hqd
JPL Small-Body Database SPK-ID
20005581
Minor Planet Center body ID
5581

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Discoverer or inventor 2
Toshimasa Furuta, Masayuki Iwamoto
Epoch 1
November 21, 2025
Followed by 1
(5582) 1989 CU8
Followed by (predecessor) 1
(5582) 1989 CU8
Follows 1
5580 Sharidake
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
5580 Sharidake
Site of astronomical discovery 1
Tokushima
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Summary

5581 Mitsuko is an asteroid[1].

References

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

Direct Wikidata claims

  1. [2] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [3] ↑ . Minor Planet Center 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] ↑ . Minor Planet Center database. 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] ↑ . 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  22. [23] ↑ . 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). 5581 Mitsuko. Retrieved November 8, 2026, from https://4ort.xyz/entity/5581-mitsuko
MLA “5581 Mitsuko.” 4ort.xyz Knowledge Graph, 4ort.xyz, 8 Nov. 2026, https://4ort.xyz/entity/5581-mitsuko.
BibTeX @misc{4ortxyz_5581-mitsuko_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{5581 Mitsuko}}, year = {2026}, url = {https://4ort.xyz/entity/5581-mitsuko}, note = {Accessed: 2026-11-08}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 5581 Mitsuko — https://4ort.xyz/entity/5581-mitsuko (retrieved 2026-11-08)

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