Q87344169

Thing brown_dwarf Q87344169

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Q87344169

Summary

Q87344169 is a brown dwarf^[1].

Key Facts

Q87344169's instance of is recorded as brown dwarf^[2].
Q87344169's instance of is recorded as exoplanet^[3].
Q87344169's instance of is recorded as double star^[4].
Q87344169's instance of is recorded as near-infrared source^[5].
Q87344169's constellation is recorded as Hercules^[6].
Q87344169's spectral class is recorded as T6.5^[7].
Q87344169's parent astronomical body is recorded as Q86459176^[8].
Q87344169's catalog code is recorded as 2MASS J17580545+4633099^[9].
Q87344169's catalog code is recorded as SDSS J175805.46+463311.9^[10].
Q87344169's catalog code is recorded as G 204-39B^[11].
Q87344169's catalog code is recorded as WISEP J175805.46+463317.5^[12].
Q87344169's catalog code is recorded as WISEA J175805.45+463316.9^[13].
Q87344169's time of discovery or invention is recorded as +2010-00-00T00:00:00Z^[14].
Q87344169's discovery method is recorded as direct imaging^[15].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.20'}^[16].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.12'}^[17].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+23.530'}^[18].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+25.243'}^[19].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+25.086'}^[20].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.199'}^[21].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.643'}^[22].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.152'}^[23].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.254'}^[24].
Q87344169's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.465'}^[25].
Q87344169's mass is recorded as {'unit': 'http://www.wikidata.org/entity/Q651336', 'amount': '+29'}^[26].

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Quick Facts

Instance of brown dwarf, exoplanet, double star, near-infrared source

Properties

Apparent magnitude unit: 1, amount: +16.20, unit: 1, amount: +16.12, unit: 1, amount: +23.530, unit: 1, amount: +25.243, unit: 1, amount: +25.086, unit: 1, amount: +24.199, unit: 1, amount: +19.643, unit: 1, amount: +16.152, unit: 1, amount: +16.254, unit: 1, amount: +15.465

Catalog code 2MASS J17580545+4633099, SDSS J175805.46+463311.9, G 204-39B, WISEP J175805.46+463317.5, WISEA J175805.45+463316.9

Constellation Hercules

Declination unit: www.wikidata.org, amount: +46.5527528

Declination component of proper motion unit: www.wikidata.org, amount: +579.4

Discovery method direct imaging

Distance from earth unit: www.wikidata.org, amount: +13.9

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Mass unit: www.wikidata.org, amount: +29

Parallax unit: www.wikidata.org, amount: +73.75

Parent astronomical body Q86459176

Right ascension unit: www.wikidata.org, amount: +269.5227292

Right ascension component of proper motion unit: www.wikidata.org, amount: +2.2

Semi-major axis of an orbit unit: www.wikidata.org, amount: +2685.0

Spectral class T6.5

Time of discovery or invention 2010

External References (2)

Extrasolar planets encyclopaedia exoplanet id g_204_39_b--6990

Simbad id G 204-39B

References

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

Direct Wikidata claims

[2] ↑ Q87344169 — instance of (P31): brown dwarf. SIMBAD. wikidata.org.
[3] ↑ Q87344169 — instance of (P31): exoplanet. Extrasolar Planets Encyclopaedia. wikidata.org.
[4] ↑ Q87344169 — instance of (P31): double star. SIMBAD. wikidata.org.
[5] ↑ Q87344169 — instance of (P31): near-infrared source. SIMBAD. wikidata.org.
[6] ↑ Q87344169 — constellation (P59): Hercules. wikidata.org.
[7] ↑ Q87344169 — spectral class (P215): T6.5. 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.
[8] ↑ Q87344169 — parent astronomical body (P397): Q86459176. Extrasolar Planets Encyclopaedia. wikidata.org.
[9] ↑ Q87344169 — catalog code (P528): 2MASS J17580545+4633099. SIMBAD. wikidata.org.
[10] ↑ Q87344169 — catalog code (P528): SDSS J175805.46+463311.9. SIMBAD. wikidata.org.
[11] ↑ Q87344169 — catalog code (P528): G 204-39B. SIMBAD. wikidata.org.
[12] ↑ Q87344169 — catalog code (P528): WISEP J175805.46+463317.5. SIMBAD. wikidata.org.
[13] ↑ Q87344169 — catalog code (P528): WISEA J175805.45+463316.9. SIMBAD. wikidata.org.
[14] ↑ Q87344169 — time of discovery or invention (P575): +2010-00-00T00:00:00Z. Extrasolar Planets Encyclopaedia. wikidata.org.
[15] ↑ Q87344169 — discovery method (P1046): direct imaging. Extrasolar Planets Encyclopaedia. wikidata.org.
[16] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.20'}. The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 ultracool dwarfs. wikidata.org.
[17] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.12'}. The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 ultracool dwarfs. wikidata.org.
[18] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+23.530'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[19] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+25.243'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[20] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+25.086'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[21] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.199'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[22] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.643'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[23] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.152'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[24] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.254'}. SIMBAD. wikidata.org.
[25] ↑ Q87344169 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.465'}. SIMBAD. wikidata.org.
[26] ↑ Q87344169 — mass (P2067): {'unit': 'http://www.wikidata.org/entity/Q651336', 'amount': '+29'}. The brown dwarf kinematics project. II. Details on nine wide common proper motion very low mass companions to nearby stars. wikidata.org.

Class ancestry

[1] ↑ Q87344169 is an instance of brown dwarf (Q101600) [P31, primary]. Wikidata. 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). Q87344169. Retrieved May 7, 2026, from https://4ort.xyz/entity/q87344169

MLA “Q87344169.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q87344169.

BibTeX

@misc{4ortxyz_q87344169_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q87344169}}, year = {2026}, url = {https://4ort.xyz/entity/q87344169}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q87344169 — https://4ort.xyz/entity/q87344169 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q87344169 · Last refreshed: May 7, 2026