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2MASS J10521350+4422559

brown dwarf
Thing brown_dwarf Q222456

Facts

13 properties
Instance of
brown dwarf, binary star[2]
Apparent magnitude
19.1 (14.6–26.3, n=8)[10][11][12][13][14][15][16][17]
Catalog code
2MASS J10521350+4422559, SDSS J105213.50+442255.6, SDSS J105213.51+442255.7[7][8][9]
Constellation
Ursa Major[3]
Declination
44.3821972 degree[20]
Declination component of proper motion
-55 milliarcsecond per year[22]
Distance from Earth
17 parsec[18]
Epoch
J2000.0[21]
Has part(s)
SDSS J105213.51+442255.7 A, SDSS J105213.51+442255.7 B[5][6]
Imported from
wholeness_audit_2026-05-02_v2
Right ascension
163.0562708 degree[19]
Right ascension component of proper motion
-6 milliarcsecond per year[23]
Spectral class
L6.5:.+T1.5:[4]
🔖 Identifiers · 2
Google Knowledge Graph ID
/g/1z3t28642
SIMBAD ID
2MASS J10521350+4422559

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Summary

2MASS J10521350+4422559 is a brown dwarf[1].

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . Individual Dynamical Masses of Ultracool Dwarfs. wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . SIMBAD. wikidata.org.
  7. [8] ↑ . SIMBAD. wikidata.org.
  8. [9] ↑ . SIMBAD. wikidata.org.
  9. [10] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  10. [11] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  11. [12] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  12. [13] ↑ . SIMBAD. wikidata.org.
  13. [14] ↑ . SIMBAD. wikidata.org.
  14. [15] ↑ . SIMBAD. wikidata.org.
  15. [16] ↑ . SIMBAD. wikidata.org.
  16. [17] ↑ . SIMBAD. wikidata.org.
  17. [18] ↑ . The brown dwarf kinematics project I. Proper motions and tangential velocities for a large sample of late-type M, L, and T dwarfs. wikidata.org.
  18. [19] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  19. [20] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  20. [21] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  21. [22] ↑ . Colors and kinematics of L dwarfs from the Sloan Digital Sky Survey. wikidata.org.
  22. [23] ↑ . Colors and kinematics of L dwarfs from the Sloan Digital Sky Survey. 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). 2MASS J10521350+4422559. Retrieved November 2, 2026, from https://4ort.xyz/entity/q222456
MLA “2MASS J10521350+4422559.” 4ort.xyz Knowledge Graph, 4ort.xyz, 2 Nov. 2026, https://4ort.xyz/entity/q222456.
BibTeX @misc{4ortxyz_q222456_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{2MASS J10521350+4422559}}, year = {2026}, url = {https://4ort.xyz/entity/q222456}, note = {Accessed: 2026-11-02}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 2MASS J10521350+4422559 — https://4ort.xyz/entity/q222456 (retrieved 2026-11-02)

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