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21564 Widmanstätten

asteroid
Place asteroid Q777252

Facts

25 properties
Instance of
asteroid
Follows
21563 Chetgervais[6]
Followed by
(21565) 1998 QZ102[7]
Absolute magnitude
12.7 (12.5–12.7, n=3)[18][19][20]
Albedo
0.058
Apoapsis
3.667, 3.658057208395992
Argument of periapsis
213.37997, 214.807868520116
Diameter
18.289
Discoverer or inventor
Eric Walter Elst[2]
Epoch
November 21, 2025
Longitude of ascending node
164.82687, 164.4583908600308
Mean anomaly
196.31404, 340.9226611376099
Minor planet group
asteroid belt[8]
Named after
Alois von Beckh Widmanstätten[5]
Orbital eccentricity
0.18 (0.18–0.19, n=3)[15][16][17]
Orbital inclination
16.81029, 16.79526782509906[21][22]
Orbital period
5.46, 1991.293934568995[23]
Parent astronomical body
Sun[9]
Periapsis
2.5329721, 2.537132716570083
Provisional designation
1971 SG3, 1987 QY9, 1998 QQ101[10][11][12]
Semi-major axis of an orbit
3.0998241, 3.097594962483037
Significant event
naming[14]
Site of astronomical discovery
European Southern Observatory, La Silla Observatory[3][4]
Time of discovery or invention
August 26, 1998[13]
Show all 25 facts +1
Time of periapsis
2461106.02385879
🏷️ Also known as
en 21564 Widmanstätten en Widmanstätten de (21564) Widmanstätten fa سیارک ۲۱۵۶۴ pt (21564) Widmanstatten ru Widmanstatten ru Widmanstätten ru 1998 QQ101 ru 1971 SG3 ru 1987 QY9 ru (21564) 1998 QQ101 ru (21564) Widmanstätten uk 21564 Відманштеттен zh 小行星21564
🔖 Identifiers · 3
Freebase ID
/m/0463b2y
JPL Small-Body Database SPK-ID
20021564
Minor Planet Center body ID
21564

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🔗 Connections
Site of astronomical discovery 2
European Southern Observatory, La Silla Observatory
Discoverer or inventor 1
Eric Walter Elst
Epoch 1
November 21, 2025
Follows 1
21563 Chetgervais
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Named after 1
Alois von Beckh Widmanstätten
Parent astronomical body 1
Sun
Preceded by (successor) 1
21563 Chetgervais
← FactGrid item ID 1
Laumės
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Summary

21564 Widmanstätten is an asteroid[1].

Related Entities

Eric Walter Elst European Southern Observatory

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. wikidata.org.
  3. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [5] ↑ . Minor Planet Center database. wikidata.org.
  5. [6] ↑ . Minor Planet Center database. wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [9] ↑ . 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] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  16. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [18] ↑ . 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.

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). 21564 Widmanstätten. Retrieved November 1, 2026, from https://4ort.xyz/entity/21564-widmanst-tten
MLA “21564 Widmanstätten.” 4ort.xyz Knowledge Graph, 4ort.xyz, 1 Nov. 2026, https://4ort.xyz/entity/21564-widmanst-tten.
BibTeX @misc{4ortxyz_21564-widmanst-tten_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{21564 Widmanstätten}}, year = {2026}, url = {https://4ort.xyz/entity/21564-widmanst-tten}, note = {Accessed: 2026-11-01}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 21564 Widmanstätten — https://4ort.xyz/entity/21564-widmanst-tten (retrieved 2026-11-01)

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