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7818 Muirhead

asteroid
Place Asteroid Q1156707

Facts

25 properties

Identity

Instance of
asteroid
More facts +24
Follows
7817 Zibiturtle[3]
Followed by
(7819) 1990 RR3[4]
Absolute magnitude
+13.9, +13.97[16][17]
Albedo
+0.297[43]
Apoapsis
3.16 (3.16–472.1M, n=3)[30][31][32]
Apparent magnitude
+19.89[15]
Argument of periapsis
254.6 (254.6–346.7, n=3)[36][37][38]
Diameter
+3.907[42]
Discoverer or inventor
Eleanor F. Helin[1]
Epoch
November 21, 2025[44]
Longitude of ascending node
160.4 (160.4–160.6, n=3)[24][25][26]
Mean anomaly
257.9 (206.7–257.9, n=3)[39][40][41]
Minor planet group
Mars-crossing asteroid[5]
Orbital eccentricity
0.35 (0.35–0.35, n=3)[12][13][14]
Orbital inclination
21.7 (21.7–21.8, n=3)[18][19][20]
Orbital period
1.3k (3.58–1.3k, n=3)[21][22][23]
Parent astronomical body
Sun[6]
Periapsis
1.52 (1.52–228.1M, n=3)[33][34][35]
Provisional designation
1970 ET1, 1988 DN5, 1990 QO[7][8][9]
Semi-major axis of an orbit
2.34 (2.34–350.1M, n=3)[27][28][29]
Significant event
naming[11]
Site of astronomical discovery
Palomar Observatory[2]
Time of discovery or invention
August 19, 1990[10]
Time of periapsis
+2461371.23287987[45]
🏷️ Also known as
en Muirhead en 7818 Muirhead de (7818) Muirhead fa سیارک ۷۸۱۸ ru Muirhead ru 1988 DN5 ru 1970 ET1 ru 1990 QO ru (7818) 1990 QO zh 小行星7818
🔖 Identifiers · 3
Freebase ID
/m/03y7kvt
JPL Small-Body Database SPK-ID
20007818
Minor Planet Center body ID
7818

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🔗 Connections
Discoverer or inventor 1
Eleanor F. Helin
Epoch 1
November 21, 2025
Followed by 1
(7819) 1990 RR3
Followed by (predecessor) 1
(7819) 1990 RR3
Follows 1
7817 Zibiturtle
Instance of 1
asteroid
Minor planet group 1
Mars-crossing asteroid
Parent astronomical body 1
Sun
Preceded by (successor) 1
7817 Zibiturtle
Site of astronomical discovery 1
Palomar Observatory
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Related Entities

Eleanor F. Helin

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [1] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [2] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [3] ↑ . Minor Planet Center database. wikidata.org.
  4. [4] ↑ . wikidata.org.
  5. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  6. [6] ↑ . wikidata.org.
  7. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [9] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [11] ↑ . wikidata.org.
  12. [12] ↑ . wikidata.org.
  13. [13] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  14. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [15] ↑ . wikidata.org.
  16. [16] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  17. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [18] ↑ . wikidata.org.
  19. [19] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  20. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [21] ↑ . wikidata.org.
  22. [22] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  23. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [24] ↑ . wikidata.org.
  25. [25] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  26. [26] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  27. [27] ↑ . wikidata.org.
  28. [28] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  29. [29] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  30. [30] ↑ . wikidata.org.
  31. [31] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  32. [32] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  33. [33] ↑ . wikidata.org.
  34. [34] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  35. [35] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  36. [36] ↑ . wikidata.org.
  37. [37] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  38. [38] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  39. [39] ↑ . wikidata.org.
  40. [40] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  41. [41] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  42. [42] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  43. [43] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  44. [44] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  45. [45] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). 7818 Muirhead. Retrieved November 3, 2026, from https://4ort.xyz/entity/7818-muirhead
MLA “7818 Muirhead.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 Nov. 2026, https://4ort.xyz/entity/7818-muirhead.
BibTeX @misc{4ortxyz_7818-muirhead_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{7818 Muirhead}}, year = {2026}, url = {https://4ort.xyz/entity/7818-muirhead}, note = {Accessed: 2026-11-03}}
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  1. 8d ago · AbzalM · 2026-11-02 view diff on Wikidata ↗
    "Changed [kaa] labels, descriptions, aliases and claims: kaawiki sitelink"
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