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21661 Olgagermani

asteroid
Place Asteroid Q672505

Facts

24 properties

Identity

Instance of
asteroid
More facts +23
Follows
21660 Velenia[4]
Followed by
21662 Benigni[5]
Absolute magnitude
14.9, 15.06[14][15]
Albedo
0.069
Apoapsis
2.946, 2.946079884464868
Argument of periapsis
166.73716, 166.7805524073859
Diameter
5.736
Discoverer or inventor
Gianluca Masi[2]
Epoch
November 21, 2025
Longitude of ascending node
166.09967, 166.0686772139583[20][21]
Mean anomaly
144.70424, 76.77445340367787
Minor planet group
asteroid belt[6]
Orbital eccentricity
0.25 (0.25–0.25, n=3)[11][12][13]
Orbital inclination
5.61626, 5.617495951288527[16][17]
Orbital period
3.63, 1325.597381159173[18][19]
Parent astronomical body
Sun[7]
Periapsis
1.7754151, 1.777146944464935
Provisional designation
1999 RA[8]
Semi-major axis of an orbit
2.3608416, 2.361613414464901[22][23]
Significant event
naming[10]
Site of astronomical discovery
Ceccano[3]
Time of discovery or invention
September 1, 1999[9]
Time of periapsis
2460717.799960078
🏷️ Also known as
en 21661 Olgagermani en Olgagermani de (21661) Olgagermani fa سیارک ۲۱۶۶۱ ru 1999 RA ru (21661) 1999 RA ru Olgagermani uk 21661 Ольгагермані zh 小行星21661
🔖 Identifiers · 3
Freebase ID
/m/03y7vdc
JPL Small-Body Database SPK-ID
20021661
Minor Planet Center body ID
21661

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

🔗 Connections
Discoverer or inventor 1
Gianluca Masi
Epoch 1
November 21, 2025
Follows 1
21660 Velenia
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
21660 Velenia
Site of astronomical discovery 1
Ceccano
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Summary

21661 Olgagermani is an asteroid[1].

Related Entities

Ceccano

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] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [14] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  14. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  18. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [20] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  20. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [22] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  22. [23] ↑ . 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). 21661 Olgagermani. Retrieved November 12, 2026, from https://4ort.xyz/entity/21661-olgagermani
MLA “21661 Olgagermani.” 4ort.xyz Knowledge Graph, 4ort.xyz, 12 Nov. 2026, https://4ort.xyz/entity/21661-olgagermani.
BibTeX @misc{4ortxyz_21661-olgagermani_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{21661 Olgagermani}}, year = {2026}, url = {https://4ort.xyz/entity/21661-olgagermani}, note = {Accessed: 2026-11-12}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 21661 Olgagermani — https://4ort.xyz/entity/21661-olgagermani (retrieved 2026-11-12)

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