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(16489) 1990 SG

minor planet
Place asteroid Q4541755
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(16489) 1990 SG

Summary

(16489) 1990 SG is an asteroid[1].

Key Facts

  • (16489) 1990 SG is credited with the discovery of Robert H. McNaught[2].
  • (16489) 1990 SG's instance of is recorded as asteroid[3].
  • (16489) 1990 SG's site of astronomical discovery is recorded as Siding Spring Observatory[4].
  • (16489) 1990 SG's follows is recorded as (16488) 1990 RX8[5].
  • (16489) 1990 SG's followed by is recorded as (16490) 1990 ST2[6].
  • (16489) 1990 SG's minor planet group is recorded as asteroid belt[7].
  • (16489) 1990 SG's parent astronomical body is recorded as Sun[8].
  • (16489) 1990 SG's provisional designation is recorded as 1990 SG[9].
  • (16489) 1990 SG's provisional designation is recorded as 2000 JO56[10].
  • (16489) 1990 SG's time of discovery or invention is recorded as +1990-09-17T00:00:00Z[11].
  • (16489) 1990 SG's Freebase ID is recorded as /m/0h6982m[12].
  • (16489) 1990 SG's JPL Small-Body Database SPK-ID is recorded as 20016489[13].
  • (16489) 1990 SG's orbital eccentricity is recorded as {'amount': '+0.11'}[14].
  • (16489) 1990 SG's orbital eccentricity is recorded as {'amount': '+0.1067962'}[15].
  • (16489) 1990 SG's orbital eccentricity is recorded as {'amount': '+0.1083091767641359'}[16].
  • (16489) 1990 SG's absolute magnitude is recorded as {'amount': '+13.1'}[17].
  • (16489) 1990 SG's absolute magnitude is recorded as {'amount': '+13.27'}[18].
  • (16489) 1990 SG's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+20.32369'}[19].
  • (16489) 1990 SG's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+20.32336189729888'}[20].
  • (16489) 1990 SG's orbital period is recorded as {'unit': 'Q577', 'amount': '+5.68'}[21].
  • (16489) 1990 SG's orbital period is recorded as {'unit': 'Q573', 'amount': '+2076.375233412594'}[22].
  • (16489) 1990 SG's rotation period is recorded as {'unit': 'Q25235', 'amount': '+2.09534'}[23].
  • (16489) 1990 SG's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+70.01250'}[24].
  • (16489) 1990 SG's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+69.97882836132628'}[25].
  • (16489) 1990 SG's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+3.1850618'}[26].

Body

Designation and Status

(16489) 1990 SG's instance of is recorded as asteroid[3].

References

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

Direct Wikidata claims

  1. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  2. [2] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [4] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  7. [8] ↑ . 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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . wikidata.org.
  13. [14] ↑ . 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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [24] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  24. [25] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [26] ↑ . 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). (16489) 1990 SG. Retrieved May 3, 2026, from https://4ort.xyz/entity/16489-1990-sg
MLA “(16489) 1990 SG.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/16489-1990-sg.
BibTeX @misc{4ortxyz_16489-1990-sg_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(16489) 1990 SG}}, year = {2026}, url = {https://4ort.xyz/entity/16489-1990-sg}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (16489) 1990 SG — https://4ort.xyz/entity/16489-1990-sg (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. 29d ago · Shuaib-bot bot · 2026-05-04 view diff on Wikidata ↗
    Orbital period → {'unit': 'Q577', 'amount': '+5.68'}, {'unit': 'Q573', 'amount': '+2076.375233412594'}
    Argument of periapsis → {'unit': 'Q28390', 'amount': '+303.35793'}, {'unit': 'Q28390', 'amount': '+304.3340118931794'}
    Mean anomaly → {'unit': 'Q28390', 'amount': '+354.83927'}, {'unit': 'Q28390', 'amount': '+49.95286506190547'}
    Followed by → —
    + 22 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.