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21410 Cahill

asteroid
Place Asteroid Q1090656

Facts

24 properties

Identity

Instance of
asteroid
More facts +23
Follows
21409 Forbes[4]
Followed by
21411 Abifraeman[5]
Absolute magnitude
+14.9, +15.12[15][16]
Albedo
+0.079
Apoapsis
+2.578, +2.577460272937092
Argument of periapsis
+46.71633, +47.39498542273547
Diameter
+4.725
Discoverer or inventor
Lincoln Near-Earth Asteroid Research[2]
Epoch
November 21, 2025
Longitude of ascending node
+220.79890, +220.7405518076054[21][22]
Mean anomaly
+342.99334, +309.2404233091834
Minor planet group
asteroid belt[6]
Orbital eccentricity
0.13 (0.13–0.13, n=3)[12][13][14]
Orbital inclination
+1.75031, +1.751540080888818[17][18]
Orbital period
+3.44, +1257.2410171524[19][20]
Parent astronomical body
Sun[7]
Periapsis
+1.9832578, +1.981964682559823
Provisional designation
1991 EM3, 1998 FH65[8][9]
Semi-major axis of an orbit
+2.2804658, +2.279712477748458[23]
Significant event
naming[11]
Site of astronomical discovery
Experimental Test Site[3]
Time of discovery or invention
March 20, 1998[10]
Time of periapsis
+2461177.7695050803
🏷️ Also known as
en 21410 Cahill en (21410) Cahill en Cahill de Cahill es Cahill fa سیارک 21410 fa سیارک ۲۱۴۱۰ fr Cahill pt Cahill ru 1991 EM3 ru 1998 FH65 ru (21410) 1998 FH65 ru Cahill uk 21410 Cahill uk 21410 Кагілл zh 小行星21410
🔖 Identifiers · 3
Freebase ID
/m/03gqy55
JPL Small-Body Database SPK-ID
20021410
Minor Planet Center body ID
21410

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

🔗 Connections
Discoverer or inventor 1
Lincoln Near-Earth Asteroid Research
Epoch 1
November 21, 2025
Followed by 1
21411 Abifraeman
Followed by (predecessor) 1
21411 Abifraeman
Follows 1
21409 Forbes
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
21409 Forbes
← FactGrid item ID 1
Barnstedt
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Summary

21410 Cahill 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] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  13. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [15] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  15. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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.

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). 21410 Cahill. Retrieved November 7, 2026, from https://4ort.xyz/entity/21410-cahill
MLA “21410 Cahill.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 Nov. 2026, https://4ort.xyz/entity/21410-cahill.
BibTeX @misc{4ortxyz_21410-cahill_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{21410 Cahill}}, year = {2026}, url = {https://4ort.xyz/entity/21410-cahill}, note = {Accessed: 2026-11-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 21410 Cahill — https://4ort.xyz/entity/21410-cahill (retrieved 2026-11-07)

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