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4631 Yabu

asteroid
Asteroid Q602366

Facts

25 properties

Identity

Instance of
asteroid
More facts +24
Follows
4630 Chaonis[4]
Followed by
4632 Udagawa[5]
Absolute magnitude
13.3, 13.58[18][19]
Albedo
0.311[38]
Apoapsis
2.511 au, 2.510811211820823 au[29][30]
Argument of periapsis
50.93829°, 51.34427432012326°[33][34]
Diameter
5.454 km[37]
Discoverer or inventor
Seiji Ueda, Hiroshi Kaneda[1][2]
Epoch
November 21, 2025[39]
Longitude of ascending node
25.77785°, 25.65335046782716°[25][26]
Mean anomaly
5.14014°, 111.1295961775397°[35][36]
Minor planet group
asteroid belt[6]
Orbital eccentricity
0.12 (0.12–0.12, n=3)[15][16][17]
Orbital inclination
7.41448°, 7.40818658683622°[20][21]
Orbital period
3.34 year, 1,219.494424170845 day[22][23]
Parent astronomical body
Sun[7]
Periapsis
1.9570804 au, 1.956891400270745 au[31][32]
Provisional designation
1957 WG, 1977 TO7, 1977 VJ2, 1987 WE1, A899 NA[8][9][10][11][12]
Rotation period
7.356 h[24]
Semi-major axis of an orbit
2.2342606 au, 2.233851306045784 au[27][28]
Significant event
naming[14]
Site of astronomical discovery
Kushiro[3]
Time of discovery or invention
November 22, 1987[13]
Time of periapsis
2,460,624.05021417 Julian day[40]
🏷️ Also known as
en 4631 Yabu en Yabu es (4631) Yabu fa سیارک ۴۶۳۱ ru 1957 WG ru 1977 TO7 ru 1977 VJ2 ru 1987 WE1 ru (4631) 1987 WE1 ru A899 NA ru Yabu uk 4631 Ябу zh 小行星4631
🔖 Identifiers · 3
Freebase ID
/m/03yl2sy
JPL Small-Body Database SPK-ID
20004631
Minor Planet Center body ID
4631

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

🔗 Connections
Discoverer or inventor 2
Hiroshi Kaneda, Seiji Ueda
Epoch 1
November 21, 2025
Followed by 1
4632 Udagawa
Followed by (predecessor) 1
4632 Udagawa
Follows 1
4630 Chaonis
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
4630 Chaonis
Site of astronomical discovery 1
Kushiro
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Related Entities

Hiroshi Kaneda

References

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

Direct Wikidata claims

  1. [1] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [2] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [4] ↑ . Minor Planet Center database. wikidata.org.
  5. [5] ↑ . Minor Planet Center database. wikidata.org.
  6. [6] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [7] ↑ . wikidata.org.
  8. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [9] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [14] ↑ . wikidata.org.
  15. [15] ↑ . wikidata.org.
  16. [16] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  17. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [18] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  19. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [20] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  21. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [22] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  23. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [25] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  26. [26] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  27. [27] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  28. [28] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  29. [29] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  30. [30] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  31. [31] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  32. [32] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  33. [33] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  34. [34] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  35. [35] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  36. [36] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  37. [37] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  38. [38] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  39. [39] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  40. [40] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). 4631 Yabu. Retrieved November 10, 2026, from https://4ort.xyz/entity/4631-yabu
MLA “4631 Yabu.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Nov. 2026, https://4ort.xyz/entity/4631-yabu.
BibTeX @misc{4ortxyz_4631-yabu_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{4631 Yabu}}, year = {2026}, url = {https://4ort.xyz/entity/4631-yabu}, note = {Accessed: 2026-11-10}}
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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. 14d ago · AbzalM · 2026-10-31 view diff on Wikidata ↗
    Follows → 4630 Chaonis
    Time of periapsis → 2,460,624.050214 Julian day
    Minor planet group → asteroid belt
    Rotation period → 7.356 hour
    + 19 other properties edited (see Wikidata diff for full list)
    "Changed [kaa] labels, descriptions, aliases and claims: kaawiki sitelink"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.