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2MASS J10210969-0304197

brown dwarf
Thing brown_dwarf Q222431

Facts

13 properties
Instance of
brown dwarf
Apparent magnitude
18.8 (15.3–25.4, n=13)[9][10][11][12][13][14][15][16][17][18][19][20][21]
Catalog code
2MASS J10210969-0304197, SDSS J102109.69-030420.1, WDS J10212-0304AB, ULAS J102109.61-030420.2, BRLT 131[4][5][6][7][8]
Constellation
Sextans[2]
Declination
-3.072167 degree, -3.0723028 degree
Declination component of proper motion
-66 milliarcsecond per year
Distance from Earth
29.1 parsec[23]
Epoch
J2000.0
Imported from
wholeness_audit_2026-05-02_v2
Parallax
33.7 milliarcsecond[22]
Right ascension
155.290375 degree, 155.2900667 degree[24][25]
Right ascension component of proper motion
-171 milliarcsecond per year
Spectral class
T0:+T5[3]
🔖 Identifiers · 2
Google Knowledge Graph ID
/g/122cz08m
SIMBAD ID
2MASS J10210969-0304197

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Summary

2MASS J10210969-0304197 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] ↑ . Individual Dynamical Masses of Ultracool Dwarfs. wikidata.org.
  3. [4] ↑ . SIMBAD. wikidata.org.
  4. [5] ↑ . SIMBAD. wikidata.org.
  5. [6] ↑ . SIMBAD. wikidata.org.
  6. [7] ↑ . SIMBAD. wikidata.org.
  7. [8] ↑ . SIMBAD. wikidata.org.
  8. [9] ↑ . The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 ultracool dwarfs. wikidata.org.
  9. [10] ↑ . The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 ultracool dwarfs. wikidata.org.
  10. [11] ↑ . The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 ultracool dwarfs. wikidata.org.
  11. [12] ↑ . The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
  12. [13] ↑ . The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
  13. [14] ↑ . The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
  14. [15] ↑ . The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
  15. [16] ↑ . The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
  16. [17] ↑ . UKIRT Infrared Deep Sky Survey (UKIDSS) Release 9. wikidata.org.
  17. [18] ↑ . Photometric brown-dwarf classification. II. A homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 with accurate spectral types. wikidata.org.
  18. [19] ↑ . Photometric brown-dwarf classification. II. A homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 with accurate spectral types. wikidata.org.
  19. [20] ↑ . Photometric brown-dwarf classification. II. A homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 with accurate spectral types. wikidata.org.
  20. [21] ↑ . Photometric brown-dwarf classification. II. A homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 with accurate spectral types. wikidata.org.
  21. [22] ↑ . Individual Dynamical Masses of Ultracool Dwarfs. wikidata.org.
  22. [23] ↑ . 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.
  23. [24] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  24. [25] ↑ . UKIRT Infrared Deep Sky Survey (UKIDSS) Release 9. 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 J10210969-0304197. Retrieved November 2, 2026, from https://4ort.xyz/entity/q222431
MLA “2MASS J10210969-0304197.” 4ort.xyz Knowledge Graph, 4ort.xyz, 2 Nov. 2026, https://4ort.xyz/entity/q222431.
BibTeX @misc{4ortxyz_q222431_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{2MASS J10210969-0304197}}, year = {2026}, url = {https://4ort.xyz/entity/q222431}, note = {Accessed: 2026-11-02}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 2MASS J10210969-0304197 — https://4ort.xyz/entity/q222431 (retrieved 2026-11-02)

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