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2MASS J08095903+4434216

brown dwarf
Thing Brown Dwarf Q222356

Facts

18 properties
Instance of
brown dwarf, exoplanet[2]
Part of
NAME Argus Association[5]
Apparent magnitude
16.4 (14.4–25.2, n=9)[11][12][13][14][15][16][17][18][19]
Catalog code
2MASS J08095903+4434216, SDSS J080959.01+443422.2, SDSS J080959.03+443421.5[6][7][8]
Constellation
Lynx[3]
Declination
44.5726694 degree
Declination component of proper motion
-203.4 milliarcsecond per year
Discovery method
direct imaging[10]
Distance from Earth
25 parsec[23]
Effective temperature
1,600 kelvin
Epoch
J2000.0
Mass
13 Jupiter mass[20]
Parallax
42.4 milliarcsecond[22]
Radius
1.35 Jupiter radius[21]
Right ascension
122.4959917 degree
Right ascension component of proper motion
-181.8 milliarcsecond per year
Spectral class
L7[4]
Time of discovery or invention
2022[9]
🏷️ Also known as
en 2MASS J0809+4434
🔖 Identifiers · 3
Extrasolar Planets Encyclopaedia exoplanet ID
2mass_j0809_4434--8077
Google Knowledge Graph ID
/g/1z3t2f8g5
SIMBAD ID
2MASS J08095903+4434216

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Summary

2MASS J08095903+4434216 is a brown dwarf[1].

References

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

Direct Wikidata claims

  1. [2] ↑ . Extrasolar Planets Encyclopaedia. wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . A targeted search for peculiarly red L and T dwarfs in SDSS, 2MASS, and WISE: discovery of a possible L7 member of the TW Hydrae association. wikidata.org.
  4. [5] ↑ . SIMBAD. wikidata.org.
  5. [6] ↑ . SIMBAD. wikidata.org.
  6. [7] ↑ . SIMBAD. wikidata.org.
  7. [8] ↑ . SIMBAD. wikidata.org.
  8. [9] ↑ . Extrasolar Planets Encyclopaedia. wikidata.org.
  9. [10] ↑ . Extrasolar Planets Encyclopaedia. 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] ↑ . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  13. [14] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  14. [15] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  15. [16] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  16. [17] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  17. [18] ↑ . The SDSS Photometric Catalog, Release 7. wikidata.org.
  18. [19] ↑ . SIMBAD. wikidata.org.
  19. [20] ↑ . Let the Great World Spin: Revealing the Stormy, Turbulent Nature of Young Giant Exoplanet Analogs with the Spitzer Space Telescope. wikidata.org.
  20. [21] ↑ . Let the Great World Spin: Revealing the Stormy, Turbulent Nature of Young Giant Exoplanet Analogs with the Spitzer Space Telescope. wikidata.org.
  21. [22] ↑ . SIMBAD. 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.

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 J08095903+4434216. Retrieved November 11, 2026, from https://4ort.xyz/entity/q222356
MLA “2MASS J08095903+4434216.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Nov. 2026, https://4ort.xyz/entity/q222356.
BibTeX @misc{4ortxyz_q222356_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{2MASS J08095903+4434216}}, year = {2026}, url = {https://4ort.xyz/entity/q222356}, note = {Accessed: 2026-11-11}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 2MASS J08095903+4434216 — https://4ort.xyz/entity/q222356 (retrieved 2026-11-11)

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