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(18374) 1991 RA18

minor planet
Place asteroid Q4541996
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(18374) 1991 RA18

Summary

(18374) 1991 RA18 is an asteroid[1]. (18374) 1991 RA18 ranks in the top 2% of asteroid entities by monthly Wikipedia readership (1 views/month).[2]

Key Facts

  • (18374) 1991 RA18 is credited with the discovery of Henry E. Holt[3].
  • (18374) 1991 RA18's instance of is recorded as asteroid[4].
  • (18374) 1991 RA18's site of astronomical discovery is recorded as Palomar Observatory[5].
  • (18374) 1991 RA18 followed (18373) 1991 RQ16[6].
  • (18374) 1991 RA18 was followed by (18375) 1991 RC27[7].
  • (18374) 1991 RA18's minor planet group is recorded as asteroid belt[8].
  • (18374) 1991 RA18's parent astronomical body is recorded as Sun[9].
  • (18374) 1991 RA18's provisional designation is recorded as 1991 RA18[10].
  • (18374) 1991 RA18's provisional designation is recorded as 1998 FJ140[11].
  • (18374) 1991 RA18's time of discovery or invention is recorded as September 13, 1991[12].
  • (18374) 1991 RA18's orbital eccentricity is recorded as {'amount': '+0.13'}[13].
  • (18374) 1991 RA18's orbital eccentricity is recorded as {'amount': '+0.1349750'}[14].
  • (18374) 1991 RA18's orbital eccentricity is recorded as {'amount': '+0.1346605493301457'}[15].
  • (18374) 1991 RA18's absolute magnitude is recorded as {'amount': '+14.4'}[16].
  • (18374) 1991 RA18's absolute magnitude is recorded as {'amount': '+14.55'}[17].
  • (18374) 1991 RA18's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+3.05416'}[18].
  • (18374) 1991 RA18's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+3.057551285802277'}[19].
  • (18374) 1991 RA18's orbital period is recorded as {'unit': 'Q577', 'amount': '+4.41'}[20].
  • (18374) 1991 RA18's orbital period is recorded as {'unit': 'Q573', 'amount': '+1610.17282216113'}[21].
  • (18374) 1991 RA18's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+215.38718'}[22].
  • (18374) 1991 RA18's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+215.3088715402069'}[23].
  • (18374) 1991 RA18's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.6883151'}[24].
  • (18374) 1991 RA18's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.688537159324387'}[25].
  • (18374) 1991 RA18's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+3.051'}[26].
  • (18374) 1991 RA18's apoapsis is recorded as {'unit': 'Q1811', 'amount': '+3.050577050093518'}[27].

Body

Designation and Status

(18374) 1991 RA18's instance of is recorded as asteroid[4].

Why It Matters

(18374) 1991 RA18 ranks in the top 2% of asteroid entities by monthly Wikipedia readership (1 views/month).[2]

References

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

Direct Wikidata claims

  1. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [5] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [11] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  10. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  13. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [16] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  15. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [18] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  17. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [20] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  19. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [22] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  21. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [24] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  23. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  24. [26] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  25. [27] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.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). (18374) 1991 RA18. Retrieved May 3, 2026, from https://4ort.xyz/entity/18374-1991-ra18
MLA “(18374) 1991 RA18.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/18374-1991-ra18.
BibTeX @misc{4ortxyz_18374-1991-ra18_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(18374) 1991 RA18}}, year = {2026}, url = {https://4ort.xyz/entity/18374-1991-ra18}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (18374) 1991 RA18 — https://4ort.xyz/entity/18374-1991-ra18 (retrieved 2026-05-03)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 19d ago · KaleemBot bot · 2026-05-20 view diff on Wikidata ↗
    Site of astronomical discovery → Palomar Observatory
    Orbital inclination → {'unit': 'Q28390', 'amount': '+3.05416'}, {'unit': 'Q28390', 'amount': '+3.057551285802277'}
    Longitude of ascending node → {'unit': 'Q28390', 'amount': '+215.38718'}, {'unit': 'Q28390', 'amount': '+215.3088715402069'}
    Followed by → —
    + 21 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:(18374) 1991 آر اے 18]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.