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6399 Harada

asteroid
Place asteroid Q558004

Facts

25 properties

Identity

Instance of
asteroid
More facts +24
Follows
6398 Timhunter[3]
Followed by
6400 Georgealexander[4]
Absolute magnitude
13 (12.9–13, n=3)[14][15][16]
Albedo
+0.225[35]
Apoapsis
+2.703, +2.702196231005794[26][27]
Argument of periapsis
+191.50636, +192.8276346589015[30][31]
Diameter
+5.809[34]
Discoverer or inventor
Tsutomu Seki[1]
Epoch
November 21, 2025[36]
Longitude of ascending node
+38.43105, +38.37888343700213[22][23]
Mean anomaly
+5.35648, +12.25076498851467[32][33]
Minor planet group
asteroid belt[5]
Orbital eccentricity
0.11 (0.11–0.11, n=3)[11][12][13]
Orbital inclination
+8.40092, +8.396229496464718[17][18]
Orbital period
+3.79, +1383.819160882345[19][20]
Parent astronomical body
Sun[6]
Periapsis
+2.1587259, +2.158337233380659[28][29]
Provisional designation
1976 GB3, 1991 GA[7][8]
Rotation period
+11.02[21]
Semi-major axis of an orbit
+2.4307431, +2.430266732193227[24][25]
Significant event
naming[10]
Site of astronomical discovery
Geisei observatory[2]
Time of discovery or invention
April 3, 1991[9]
Time of periapsis
+2460953.4087685375[37]
🏷️ Also known as
en 6399 Harada en Harada de (6399) Harada fa سیارک ۶۳۹۹ ru 1991 GA ru 1976 GB3 ru (6399) 1991 GA ru Harada uk 6399 Харада zh 小行星6399
🔖 Identifiers · 3
Freebase ID
/m/03y39ff
JPL Small-Body Database SPK-ID
20006399
Minor Planet Center body ID
6399

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

🔗 Connections
Discoverer or inventor 1
Tsutomu Seki
Epoch 1
November 21, 2025
Followed by 1
6400 Georgealexander
Followed by (predecessor) 1
6400 Georgealexander
Follows 1
6398 Timhunter
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
6398 Timhunter
Site of astronomical discovery 1
Geisei observatory
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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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [3] ↑ . Minor Planet Center database. wikidata.org.
  4. [4] ↑ . Minor Planet Center database. wikidata.org.
  5. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  6. [6] ↑ . wikidata.org.
  7. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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] ↑ . wikidata.org.
  11. [11] ↑ . wikidata.org.
  12. [12] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  13. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [14] ↑ . wikidata.org.
  15. [15] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  16. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [17] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  18. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [19] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  20. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  25. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  26. [26] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  27. [27] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  28. [28] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  29. [29] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  30. [30] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  31. [31] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  32. [32] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  33. [33] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  34. [34] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  35. [35] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. 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.

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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). 6399 Harada. Retrieved November 2, 2026, from https://4ort.xyz/entity/6399-harada
MLA “6399 Harada.” 4ort.xyz Knowledge Graph, 4ort.xyz, 2 Nov. 2026, https://4ort.xyz/entity/6399-harada.
BibTeX @misc{4ortxyz_6399-harada_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{6399 Harada}}, year = {2026}, url = {https://4ort.xyz/entity/6399-harada}, note = {Accessed: 2026-11-02}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 6399 Harada — https://4ort.xyz/entity/6399-harada (retrieved 2026-11-02)

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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 ↗
    Periapsis → {'unit': 'Q1811', 'amount': '+2.1587259'}, {'unit': 'Q1811', 'amount': '+2.158337233380659'}
    Orbital period → {'unit': 'Q577', 'amount': '+3.79'}, {'unit': 'Q573', 'amount': '+1383.819160882345'}
    Wikipedia languages → ['arz', 'ce', 'en', 'eo', 'es', 'fa', 'fi', 'fr', 'hu', 'hy', 'it', 'kaa', 'la',
    Rotation period → {'unit': 'Q25235', 'amount': '+11.02'}
    + 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.