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(5499) 1981 SU2

main-belt minor planet
Place asteroid Q710773

Facts

24 properties

Identity

Instance of
asteroid
More facts +23
Follows
5498 Gustafsson[4]
Followed by
5500 Twilley[5]
Absolute magnitude
13.8, 13.88[14][15]
Albedo
0.255
Apoapsis
2.574, 2.573158257867894
Argument of periapsis
84.77398, 84.77968202660124
Diameter
3.805
Discoverer or inventor
Haute-Provence Observatory[2]
Epoch
November 21, 2025
Longitude of ascending node
312.87671, 312.7682073801161[21][22]
Mean anomaly
210.97043, 298.5163714550656
Minor planet group
asteroid belt[6]
Orbital eccentricity
0.1339278, 0.1339839802478215[12][13]
Orbital inclination
2.1217, 2.121018743505377[16][17]
Orbital period
3.42, 1248.497836954707[18][19]
Parent astronomical body
Sun[7]
Periapsis
1.9656893, 1.96510383875459
Provisional designation
1981 SU2, 1954 XH, 1986 AX1[8][9][10]
Rotation period
3.6925[20]
Semi-major axis of an orbit
2.2696598, 2.269131048311242[23]
Site of astronomical discovery
Haute-Provence Observatory[3]
Time of discovery or invention
September 29, 1981[11]
Time of periapsis
2461213.7282701293
🏷️ Also known as
en (5499) 1981 SU2 ru 1954 XH ru 1981 SU2 ru 1986 AX1 uk 5499 1981 SU2 zh 小行星5499
🔖 Identifiers · 4
Freebase ID
/m/0b7699c
JPL Small-Body Database SPK-ID
20005499
Minor Planet Center body ID
5499
Wolfram Language entity code
Entity["MinorPlanet", "MinorPlanet5499Provisional1981SU2"]

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Discoverer or inventor 1
Haute-Provence Observatory
Epoch 1
November 21, 2025
Followed by 1
5500 Twilley
Followed by (predecessor) 1
5500 Twilley
Follows 1
5498 Gustafsson
Instance of 1
asteroid
Minor planet group 1
asteroid belt
Parent astronomical body 1
Sun
Preceded by (successor) 1
5498 Gustafsson
Site of astronomical discovery 1
Haute-Provence Observatory
← FactGrid item ID 1
Demianivka
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Summary

(5499) 1981 SU2 is an asteroid[1].

References

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

Direct Wikidata claims

  1. [2] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  2. [3] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  8. [9] ↑ . Minor Planet Center database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  9. [10] ↑ . Minor Planet Center 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  12. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [14] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  14. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: 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] ↑ . minorplanetcenter.net. minorplanetcenter.net. Provenance: wikidata.org.
  18. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. 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.

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). (5499) 1981 SU2. Retrieved November 2, 2026, from https://4ort.xyz/entity/5499-1981-su2
MLA “(5499) 1981 SU2.” 4ort.xyz Knowledge Graph, 4ort.xyz, 2 Nov. 2026, https://4ort.xyz/entity/5499-1981-su2.
BibTeX @misc{4ortxyz_5499-1981-su2_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{(5499) 1981 SU2}}, year = {2026}, url = {https://4ort.xyz/entity/5499-1981-su2}, note = {Accessed: 2026-11-02}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): (5499) 1981 SU2 — https://4ort.xyz/entity/5499-1981-su2 (retrieved 2026-11-02)

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