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1998 XC21

asteroid
Thing Asteroid Q15192106

Facts

23 properties
Instance of
asteroid
Follows
2002 QS8[3]
Followed by
2000 EG182[4]
Absolute magnitude
15.01[11]
Albedo
0.063[21]
Apoapsis
3.591120029194885 au[16]
Argument of periapsis
221.8877794278444°[18]
Diameter
6.056 km[20]
Discoverer or inventor
Near-Earth Asteroid Tracking[1]
Epoch
June 9, 2026[22]
Longitude of ascending node
126.44623383°[14]
Mean anomaly
147.1380417655782°[19]
Minor planet group
asteroid belt[5]
Orbital eccentricity
0.171607348562355[10]
Orbital inclination
2.811733080038196°[12]
Orbital period
1,960.063665870751 day[13]
Parent astronomical body
Sun[6]
Periapsis
2.539124943408681 au[17]
Provisional designation
2002 QW8, 1998 XC21[7][8]
Semi-major axis of an orbit
3.065122486301783 au[15]
Site of astronomical discovery
Haleakalā Observatory[2]
Time of discovery or invention
August 19, 2002[9]
Time of periapsis
2,460,399.389084633 Julian day[23]
🏷️ Also known as
ru 1998 XC21 ru 2002 QW8 zh 小行星78402
🔖 Identifiers · 2
JPL Small-Body Database SPK-ID
20078402
Minor Planet Center body ID
78402

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References

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

Direct Wikidata claims

  1. [1] ↑ . 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. [3] ↑ . 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] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  12. [12] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [13] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  14. [14] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  15. [15] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  16. [16] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  17. [17] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  18. [18] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  19. [19] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  20. [20] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  21. [21] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  22. [22] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  23. [23] ↑ . JPL Small-Body Database. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.

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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). 1998 XC21. Retrieved October 29, 2026, from https://4ort.xyz/entity/q15192106
MLA “1998 XC21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 29 Oct. 2026, https://4ort.xyz/entity/q15192106.
BibTeX @misc{4ortxyz_q15192106_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{1998 XC21}}, year = {2026}, url = {https://4ort.xyz/entity/q15192106}, note = {Accessed: 2026-10-29}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 1998 XC21 — https://4ort.xyz/entity/q15192106 (retrieved 2026-10-29)

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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. 22w ago · LiMrBot bot · 2026-06-07 view diff on Wikidata ↗
    Absolute magnitude → 15.01
    Apoapsis → 3.59112 astronomical unit
    Semi-major axis of an orbit → 3.065122 astronomical unit
    Parent astronomical body → Sun
    + 22 other properties edited (see Wikidata diff for full list)
    "Removed claim: Absolute magnitude: 15.03"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.