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18161 Koshiishi

main-belt minor planet
Place Asteroid Q3597784

Facts

25 properties

Identity

Instance of
asteroid
More facts +24
Follows
18160 Nihon Uchu Forum[4]
Followed by
18162 Denlea[5]
Absolute magnitude
+12.2, +12.34[19][20]
Albedo
+0.166[39]
Apoapsis
+3.299, +3.288715169343597[30][31]
Argument of periapsis
+5.65205, +6.484865815461456[34][35]
Diameter
+11.87[38]
Discoverer or inventor
BATTeRS[2]
Epoch
November 21, 2025[40]
Longitude of ascending node
+0.79048, +0.5147593283148605[26][27]
Mean anomaly
+160.47134, +331.1752189375772[36][37]
Minor planet group
asteroid belt[6]
Orbital eccentricity
0.1 (0.1–0.1, n=3)[16][17][18]
Orbital inclination
+9.57130, +9.561883480375513[21][22]
Orbital period
+5.19, +1896.903488696222[23][24]
Parent astronomical body
Sun[7]
Periapsis
+2.6936706, +2.709120112620075[32][33]
Provisional designation
1979 SL12, 1979 WY4, 1984 SY, 1989 TA14, 1992 FV2, 2000 PZ12[8][9][10][11][12][13]
Rotation period
+12.0068[25]
Semi-major axis of an orbit
+2.9961062, +2.998917640981836[28][29]
Significant event
naming[15]
Site of astronomical discovery
Bisei Spaceguard Center[3]
Time of discovery or invention
August 7, 2000[14]
Time of periapsis
+2461152.382854884[41]
🏷️ Also known as
en 18161 Koshiishi en Koshiishi de (18161) Koshiishi fa سیارک 18161 fa سیارک ۱۸۱۶۱ ru 1992 FV2 ru 2000 PZ12 ru Koshiishi ru 1979 WY4 ru (18161) 2000 PZ12 ru 1979 SL12 ru 1984 SY ru 1989 TA14 zh 小行星18161
🔖 Identifiers · 3
Freebase ID
/m/0cc5zrs
JPL Small-Body Database SPK-ID
20018161
Minor Planet Center body ID
18161

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

🔗 Connections
Discoverer or inventor 1
BATTeRS
Epoch 1
November 21, 2025
Followed by 1
18162 Denlea
Followed by (predecessor) 1
18162 Denlea
Follows 1
18160 Nihon Uchu Forum
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
18160 Nihon Uchu Forum
Site of astronomical discovery 1
Bisei Spaceguard Center
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Summary

18161 Koshiishi 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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [4] ↑ . Minor Planet Center database. wikidata.org.
  4. [5] ↑ . Minor Planet Center database. wikidata.org.
  5. [6] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  17. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [19] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  19. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [21] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  21. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [23] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  23. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [26] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  26. [27] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  27. [28] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  28. [29] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  29. [30] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  30. [31] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  31. [32] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  32. [33] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  33. [34] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  34. [35] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  35. [36] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  36. [37] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. 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.

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). 18161 Koshiishi. Retrieved November 10, 2026, from https://4ort.xyz/entity/18161-koshiishi
MLA “18161 Koshiishi.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Nov. 2026, https://4ort.xyz/entity/18161-koshiishi.
BibTeX @misc{4ortxyz_18161-koshiishi_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{18161 Koshiishi}}, year = {2026}, url = {https://4ort.xyz/entity/18161-koshiishi}, 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. 27w ago · Shuaib-bot bot · 2026-05-04 view diff on Wikidata ↗
    Argument of periapsis → 5.65205 degree, 6.484866 degree
    Periapsis → 2.693671 astronomical unit, 2.70912 astronomical unit
    Site of astronomical discovery → Bisei Spaceguard Center
    Instance of → asteroid
    + 19 other properties edited (see Wikidata diff for full list)
    "Changed the item"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.