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2820 Iisalmi

asteroid
Thing Asteroid Q150165

Facts

26 properties
Instance of
asteroid
Follows
2819 Ensor[4]
Followed by
2821 Slávka[5]
Absolute magnitude
+12.9, +13.03[21][22]
Albedo
+0.264[41]
Apoapsis
+2.589, +2.58914478067704[32][33]
Argument of periapsis
+160.17402, +160.0700727996175[36][37]
Diameter
+6.826[40]
Discoverer or inventor
Yrjö Väisälä[1]
Epoch
November 21, 2025[42]
Longitude of ascending node
+216.75226, +216.7018702231927[28][29]
Mean anomaly
+346.10196, +336.8763397148681[38][39]
Minor planet group
asteroid belt[6]
Named after
Iisalmi[3]
Orbital eccentricity
0.16 (0.16–0.16, n=3)[18][19][20]
Orbital inclination
+2.94646, +2.948036241965095[23][24]
Orbital period
+3.33, +1215.835254877247[25][26]
Parent astronomical body
Sun[7]
Periapsis
+1.8693391, +1.869616275317347[34][35]
Provisional designation
1929 WM, 1942 RU, 1952 SH1, 1959 VE, 1972 RG3, 1979 WE4, 1979 XN, 1979 YS5[8][9][10][11][12][13][14][15]
Rotation period
+2.758[27]
Semi-major axis of an orbit
+2.2292065, +2.229380527997193[30][31]
Significant event
naming[17]
Site of astronomical discovery
Iso-Heikkilä Observatory[2]
Show all 26 facts +2
Time of discovery or invention
September 8, 1942[16]
Time of periapsis
+2461078.596003879[43]
🏷️ Also known as
en Iisalmi de (2820) Iisalmi el 2820 Ιίσαλμι fa سیارک ۲۸۲۰ ja イーサルミ ru 1979 WE4 ru 1979 XN ru 1979 YS5 ru (2820) 1942 RU ru (2820) Иисальми ru Иисальми ru 1972 RG3 ru 1929 WM ru 1942 RU ru 1952 SH1 ru 1959 VE uk 2820 Ійсалмі zh 小行星2820
🔖 Identifiers · 3
Freebase ID
/m/03y44n8
JPL Small-Body Database SPK-ID
20002820
Minor Planet Center body ID
2820

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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] ↑ . 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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [17] ↑ . wikidata.org.
  18. [18] ↑ . 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  22. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [23] ↑ . minorplanetcenter.net. minorplanetcenter.net. 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] ↑ . 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  35. [35] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  36. [36] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  37. [37] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  38. [38] ↑ . minorplanetcenter.net. minorplanetcenter.net. 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.
  41. [41] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  42. [42] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  43. [43] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). 2820 Iisalmi. Retrieved November 9, 2026, from https://4ort.xyz/entity/2820-iisalmi
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BibTeX @misc{4ortxyz_2820-iisalmi_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{2820 Iisalmi}}, year = {2026}, url = {https://4ort.xyz/entity/2820-iisalmi}, note = {Accessed: 2026-11-09}}
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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. 12d ago · AbzalM · 2026-10-30 view diff on Wikidata ↗
    Semi-major axis of an orbit → 2.229207 astronomical unit, 2.229381 astronomical unit
    Orbital eccentricity → 0.16, 0.161433, 0.161374
    Followed by → 2821 Slávka
    Time of discovery or invention → September 8, 1942
    + 26 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.