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(18357) 1990 SR2

minor planet
Place asteroid Q4541987
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(18357) 1990 SR2

Summary

(18357) 1990 SR2 is an asteroid[1]. (18357) 1990 SR2 is known by 4 alternative names across languages and contexts.[2]

Key Facts

  • (18357) 1990 SR2 is credited with the discovery of Henry E. Holt[3].
  • (18357) 1990 SR2's instance of is recorded as asteroid[4].
  • (18357) 1990 SR2's site of astronomical discovery is recorded as Palomar Observatory[5].
  • (18357) 1990 SR2 followed (18356) 1990 SF1[6].
  • (18357) 1990 SR2 was followed by (18358) 1990 SB11[7].
  • (18357) 1990 SR2's minor planet group is recorded as asteroid belt[8].
  • (18357) 1990 SR2's parent astronomical body is recorded as Sun[9].
  • (18357) 1990 SR2's provisional designation is recorded as 1977 RA2[10].
  • (18357) 1990 SR2's provisional designation is recorded as 1990 SR2[11].
  • (18357) 1990 SR2's provisional designation is recorded as 1990 SX28[12].
  • (18357) 1990 SR2's provisional designation is recorded as 1999 FX30[13].
  • (18357) 1990 SR2's time of discovery or invention is recorded as September 18, 1990[14].
  • (18357) 1990 SR2's orbital eccentricity is recorded as {'amount': '+0.20'}[15].
  • (18357) 1990 SR2's orbital eccentricity is recorded as {'amount': '+0.1963591'}[16].
  • (18357) 1990 SR2's orbital eccentricity is recorded as {'amount': '+0.196764117950577'}[17].
  • (18357) 1990 SR2's absolute magnitude is recorded as {'amount': '+14.7'}[18].
  • (18357) 1990 SR2's absolute magnitude is recorded as {'amount': '+14.91'}[19].
  • (18357) 1990 SR2's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+4.73531'}[20].
  • (18357) 1990 SR2's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+4.734197247697375'}[21].
  • (18357) 1990 SR2's orbital period is recorded as {'unit': 'Q577', 'amount': '+3.24'}[22].
  • (18357) 1990 SR2's orbital period is recorded as {'unit': 'Q573', 'amount': '+1182.005706407519'}[23].
  • (18357) 1990 SR2's rotation period is recorded as {'unit': 'Q25235', 'amount': '+16.55'}[24].
  • (18357) 1990 SR2's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+32.41924'}[25].
  • (18357) 1990 SR2's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+32.38864568702944'}[26].
  • (18357) 1990 SR2's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+2.1881735'}[27].

Body

Designation and Status

(18357) 1990 SR2's instance of is recorded as asteroid[4].

Why It Matters

(18357) 1990 SR2 is known by 4 alternative names across languages and contexts.[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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [15] ↑ . 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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [25] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  24. [26] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  25. [27] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). (18357) 1990 SR2. Retrieved May 3, 2026, from https://4ort.xyz/entity/18357-1990-sr2
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BibTeX @misc{4ortxyz_18357-1990-sr2_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(18357) 1990 SR2}}, year = {2026}, url = {https://4ort.xyz/entity/18357-1990-sr2}, note = {Accessed: 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. 27d ago · KaleemBot bot · 2026-05-12 view diff on Wikidata ↗
    Discoverer or inventor → Henry E. Holt
    Diameter → {'unit': 'Q828224', 'amount': '+2.894'}
    Time of periapsis → {'unit': 'Q14267', 'amount': '+2461037.4125109008'}
    Site of astronomical discovery → Palomar Observatory
    + 22 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ Added [[wikipedia:ur:(18357) 1990 ایس آر 2]]"
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