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4903 Ichikawa

asteroid
Place asteroid Q1043859

Facts

25 properties

Identity

Instance of
asteroid
More facts +24
Follows
4902 Thessandrus[5]
Followed by
4904 Makio[6]
Absolute magnitude
+12.6, +12.81[20][21]
Albedo
+0.117[40]
Apoapsis
+3.724, +3.726352077578651[31][32]
Argument of periapsis
+250.92518, +250.0540938295546[35][36]
Diameter
+14.789[39]
Discoverer or inventor
Yoshikane Mizuno, Toshimasa Furuta[2][3]
Epoch
November 21, 2025[41]
Longitude of ascending node
+90.76928, +90.69376396690363[27][28]
Mean anomaly
+132.55971, +197.8459619983387[37][38]
Minor planet group
asteroid belt[7]
Orbital eccentricity
0.19 (0.18–0.19, n=3)[17][18][19]
Orbital inclination
+2.54305, +2.544637144883982[22][23]
Orbital period
+5.58, +2032.512077000805[24][25]
Parent astronomical body
Sun[8]
Periapsis
+2.5676019, +2.554035814098526[33][34]
Provisional designation
1953 FU, 1972 TM1, 1977 OG, 1980 BU4, 1983 TG, 1989 UD[9][10][11][12][13][14]
Rotation period
+20.403[26]
Semi-major axis of an orbit
+3.1457279, +3.140193945838589[29][30]
Significant event
naming[16]
Site of astronomical discovery
Kani[4]
Time of discovery or invention
October 20, 1989[15]
Time of periapsis
+2461916.000112702[42]
🏷️ Also known as
en 4903 Ichikawa en (4903) Ichikawa en Ichikawa de Ichikawa es Ichikawa fa سیارک 4903 fa سیارک ۴۹۰۳ fr Ichikawa ja 市川 pt Ichikawa ru 1953 FU ru 1972 TM1 ru 1977 OG ru 1980 BU4 ru 1983 TG ru 1989 UD ru (4903) 1989 UD ru Ichikawa uk 4903 Ichikawa uk 4903 Ітікава
🔖 Identifiers · 3
Freebase ID
/m/03y43m_
JPL Small-Body Database SPK-ID
20004903
Minor Planet Center body ID
4903

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

🔗 Connections
Discoverer or inventor 2
Toshimasa Furuta, Yoshikane Mizuno
Epoch 1
November 21, 2025
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Site of astronomical discovery 1
Kani
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Summary

4903 Ichikawa 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] ↑ . Minor Planet Center database. 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 . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . 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.
  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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  26. [27] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  27. [28] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  28. [29] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  29. [30] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  30. [31] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  31. [32] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  32. [33] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  33. [34] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  34. [35] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  35. [36] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  36. [37] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  37. [38] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  38. [39] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  39. [40] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  40. [41] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  41. [42] ↑ . 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). 4903 Ichikawa. Retrieved November 1, 2026, from https://4ort.xyz/entity/4903-ichikawa
MLA “4903 Ichikawa.” 4ort.xyz Knowledge Graph, 4ort.xyz, 1 Nov. 2026, https://4ort.xyz/entity/4903-ichikawa.
BibTeX @misc{4ortxyz_4903-ichikawa_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{4903 Ichikawa}}, year = {2026}, url = {https://4ort.xyz/entity/4903-ichikawa}, note = {Accessed: 2026-11-01}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 4903 Ichikawa — https://4ort.xyz/entity/4903-ichikawa (retrieved 2026-11-01)

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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. 7d ago · AbzalM · 2026-10-31 view diff on Wikidata ↗
    Follows → 4902 Thessandrus
    Follows → —
    Instance of → —
    Time of periapsis → {'unit': 'Q14267', 'amount': '+2461916.000112702'}
    + 25 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-and-other-short:0||kaa */ kaawiki sitelink"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.