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8121 Altdorfer

asteroid
Thing asteroid Q735352

Facts

26 properties
Instance of
asteroid
Follows
8120 Kobe[6]
Followed by
8122 Holbein[7]
Absolute magnitude
+15.0, +15.22[18][19]
Albedo
+0.347[38]
Apoapsis
+2.462, +2.463614792634717[29][30]
Argument of periapsis
+113.48291, +113.5863774843309[33][34]
Diameter
+2.474[37]
Discoverer or inventor
Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld, Tom Gehrels[1][2][3]
Epoch
November 21, 2025[39]
Longitude of ascending node
+9.51771, +9.37070251906054[25][26]
Mean anomaly
+76.45527, +63.04235761831052[35][36]
Minor planet group
asteroid belt[8]
Named after
Albrecht Altdorfer[5]
Orbital eccentricity
0.1 (0.1–0.1, n=3)[15][16][17]
Orbital inclination
+2.68342, +2.681964918880576[20][21]
Orbital period
+3.35, +1222.452539693891[22][23]
Parent astronomical body
Sun[9]
Periapsis
+2.0132414, +2.011309742990962[31][32]
Provisional designation
1972 GR1, 1990 SU29, 2572 P-L[10][11][12]
Rotation period
+4.022[24]
Semi-major axis of an orbit
+2.2378668, +2.237462267812839[27][28]
Significant event
naming[14]
Site of astronomical discovery
Palomar Observatory[4]
Show all 26 facts +2
Time of discovery or invention
September 24, 1960[13]
Time of periapsis
+2460786.4269717257[40]
🏷️ Also known as
en Altdorfer de 2572 P-L de (8121) Altdorfer fa سیارک ۸۱۲۱ ja アルトドルファー ru 1972 GR1 ru 1990 SU29 ru (8121) 2572 P-L ru PLS2572 uk 8121 Альтдорфер zh 小行星8121
🔖 Identifiers · 3
Freebase ID
/m/03y0r3r
JPL Small-Body Database SPK-ID
20008121
Minor Planet Center body ID
8121

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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] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [3] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  5. [5] ↑ . wikidata.org.
  6. [6] ↑ . Minor Planet Center database. wikidata.org.
  7. [7] ↑ . Minor Planet Center database. wikidata.org.
  8. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [9] ↑ . 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). 8121 Altdorfer. Retrieved November 2, 2026, from https://4ort.xyz/entity/8121-altdorfer
MLA “8121 Altdorfer.” 4ort.xyz Knowledge Graph, 4ort.xyz, 2 Nov. 2026, https://4ort.xyz/entity/8121-altdorfer.
BibTeX @misc{4ortxyz_8121-altdorfer_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{8121 Altdorfer}}, year = {2026}, url = {https://4ort.xyz/entity/8121-altdorfer}, note = {Accessed: 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. 2d ago · AbzalM · 2026-11-02 view diff on Wikidata ↗
    Orbital inclination → {'unit': 'Q28390', 'amount': '+2.68342'}, {'unit': 'Q28390', 'amount': '+2.681964918880576'}
    Apoapsis → {'unit': 'Q1811', 'amount': '+2.462'}, {'unit': 'Q1811', 'amount': '+2.463614792634717'}
    Discoverer or inventor → Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld, Tom Gehrels
    Site of astronomical discovery → Palomar Observatory
    + 30 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-and-other-short:0||kaa */ kaawiki sitelink"
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