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4057 Demophon

asteroid
Thing Asteroid Q152600

Facts

27 properties
Instance of
asteroid
Follows
4056 Timwarner[6]
Followed by
4058 Cecilgreen[7]
Absolute magnitude
10.1, 10.27[19][20]
Albedo
0.077
Apoapsis
5.883 astronomical unit, 5.855283001136649 astronomical unit
Argument of periapsis
58.87440 degree, 61.06604472828545 degree
Diameter
45.683 km
Discoverer or inventor
Edward L. G. Bowell[2]
Epoch
November 21, 2025
Lagrangian point
L4-Jupiter-Sun[18]
Longitude of ascending node
24.38352 degree, 24.25081475522265 degree
Mean anomaly
197.55617 degree, 65.54058505254659 degree
Minor planet group
Jupiter trojan, Greek camp trojan asteroid, asteroid belt[8][9][10]
Named after
Demophon of Athens[5]
Orbital eccentricity
0.12 (0.12–0.12, n=3)[15][16][17]
Orbital inclination
2.87064 degree, 2.873138551586079 degree[21][22]
Orbital period
12.07 year, 4,375.337209255079 day[23][24]
Parent astronomical body
Sun[11]
Periapsis
4.6424681 astronomical unit, 4.615328944242532 astronomical unit
Provisional designation
1985 TQ[12]
Rotation period
29.82 hour[25]
Semi-major axis of an orbit
5.2628423 astronomical unit, 5.235305972689591 astronomical unit
Significant event
naming[14]
Show all 27 facts +3
Site of astronomical discovery
Flagstaff, Lowell Observatory[3][4]
Time of discovery or invention
October 15, 1985[13]
Time of periapsis
2,460,203.9384430647 Julian day
🏷️ Also known as
en (4057) Demophon en Demophon ar ديمفون 4057 el 4057 Δημοφών fa سیارک ۴۰۵۷ fr (4057) Démophon ru 1985 TQ ru (4057) 1985 TQ ru (4057) Демофон ru Демофон zh 小行星4057
🔖 Identifiers · 3
Freebase ID
/m/03y1dv_
JPL Small-Body Database SPK-ID
20004057
Minor Planet Center body ID
4057

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Summary

4057 Demophon 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. wikidata.org.
  3. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . Minor Planet Center database. wikidata.org.
  6. [7] ↑ . Minor Planet Center database. wikidata.org.
  7. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [9] ↑ . minorplanetcenter.org. minorplanetcenter.org. Provenance: wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . 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.
  23. [24] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [25] ↑ . 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). 4057 Demophon. Retrieved November 6, 2026, from https://4ort.xyz/entity/4057-demophon
MLA “4057 Demophon.” 4ort.xyz Knowledge Graph, 4ort.xyz, 6 Nov. 2026, https://4ort.xyz/entity/4057-demophon.
BibTeX @misc{4ortxyz_4057-demophon_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{4057 Demophon}}, year = {2026}, url = {https://4ort.xyz/entity/4057-demophon}, note = {Accessed: 2026-11-06}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 4057 Demophon — https://4ort.xyz/entity/4057-demophon (retrieved 2026-11-06)

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