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21409 Forbes

asteroid
Asteroid Q513854

Facts

22 properties

Identity

Instance of
asteroid
More facts +21
Follows
21408 Lyrahaas[4]
Followed by
21410 Cahill[5]
Absolute magnitude
15.2, 15.42[15][16]
Apoapsis
2.559, 2.556821871005368
Argument of periapsis
44.54899, 45.31225907578161
Discoverer or inventor
Lincoln Near-Earth Asteroid Research[2]
Epoch
November 21, 2025
Longitude of ascending node
193.52443, 193.4241068639056[21][22]
Mean anomaly
12.82432, 340.7754267203329
Minor planet group
asteroid belt[6]
Orbital eccentricity
0.12 (0.12–0.12, n=3)[12][13][14]
Orbital inclination
5.57146, 5.567738415026519[17][18]
Orbital period
3.44, 1254.344845447055[19][20]
Parent astronomical body
Sun[7]
Periapsis
1.9942883, 1.995598353580252
Provisional designation
1974 HV1, 1998 FC65[8][9]
Semi-major axis of an orbit
2.2766199, 2.27621011229281[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
2461067.48401222
🏷️ Also known as
en 21409 Forbes en Forbes es (21409) Forbes fa سیارک ۲۱۴۰۹ ru 1974 HV1 ru 1998 FC65 ru (21409) 1998 FC65 ru Forbes uk 21409 Форбс zh 小行星21409
🔖 Identifiers · 3
Freebase ID
/m/03y27f_
JPL Small-Body Database SPK-ID
20021409
Minor Planet Center body ID
21409

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
21410 Cahill
Followed by (predecessor) 1
21410 Cahill
Follows 1
21408 Lyrahaas
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
21408 Lyrahaas
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Summary

21409 Forbes 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). 21409 Forbes. Retrieved November 12, 2026, from https://4ort.xyz/entity/21409-forbes
MLA “21409 Forbes.” 4ort.xyz Knowledge Graph, 4ort.xyz, 12 Nov. 2026, https://4ort.xyz/entity/21409-forbes.
BibTeX @misc{4ortxyz_21409-forbes_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{21409 Forbes}}, year = {2026}, url = {https://4ort.xyz/entity/21409-forbes}, note = {Accessed: 2026-11-12}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 21409 Forbes — https://4ort.xyz/entity/21409-forbes (retrieved 2026-11-12)

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