Q81944538

Thing brown_dwarf Q81944538

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Q81944538

Summary

Q81944538 is a brown dwarf^[1].

Key Facts

Q81944538's instance of is recorded as brown dwarf^[2].
Q81944538's constellation is recorded as Hydra^[3].
Q81944538's spectral class is recorded as M8V^[4].
Q81944538's catalog code is recorded as 2MASS J09384278+0501417^[5].
Q81944538's catalog code is recorded as SDSS J093842.78+050141.5^[6].
Q81944538's catalog code is recorded as SDSS J093842.78+050141.6^[7].
Q81944538's redshift is recorded as {'unit': '1', 'amount': '-0.00001'}^[8].
Q81944538's apparent magnitude is recorded as {'unit': '1', 'amount': '+23.430'}^[9].
Q81944538's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.608'}^[10].
Q81944538's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.597'}^[11].
Q81944538's apparent magnitude is recorded as {'unit': '1', 'amount': '+20.434'}^[12].
Q81944538's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.607'}^[13].
Q81944538's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.24'}^[14].
Q81944538's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.357'}^[15].
Q81944538's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.592'}^[16].
Q81944538's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+21'}^[17].
Q81944538's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+241.1'}^[18].
Q81944538's SIMBAD ID is recorded as 2MASS J09384278+0501417^[19].
Q81944538's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+144.6782875'}^[20].
Q81944538's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+5.0282750'}^[21].
Q81944538's epoch is recorded as J2000.0^[22].
Q81944538's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-34'}^[23].
Q81944538's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-40'}^[24].
Q81944538's Gaia ID is recorded as 3851582123928732544^[25].

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Quick Facts

Instance of brown dwarf

Properties

Apparent magnitude unit: 1, amount: +23.430, unit: 1, amount: +24.608, unit: 1, amount: +24.597, unit: 1, amount: +20.434, unit: 1, amount: +18.607, unit: 1, amount: +15.24, unit: 1, amount: +16.357, unit: 1, amount: +15.592

Catalog code 2MASS J09384278+0501417, SDSS J093842.78+050141.5, SDSS J093842.78+050141.6

Constellation Hydra

Declination unit: www.wikidata.org, amount: +5.0282750

Declination component of proper motion unit: www.wikidata.org, amount: -34

Distance from earth unit: www.wikidata.org, amount: +241.1

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Radial velocity unit: www.wikidata.org, amount: +21

Redshift unit: 1, amount: -0.00001

Right ascension unit: www.wikidata.org, amount: +144.6782875

Right ascension component of proper motion unit: www.wikidata.org, amount: -40

Spectral class M8V

External References (2)

Gaia id 3851582123928732544

Simbad id 2MASS J09384278+0501417

References

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

Direct Wikidata claims

[2] ↑ Q81944538 — instance of (P31): brown dwarf. SIMBAD. wikidata.org.
[3] ↑ Q81944538 — constellation (P59): Hydra. wikidata.org.
[4] ↑ Q81944538 — spectral class (P215): M8V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81944538 — catalog code (P528): 2MASS J09384278+0501417. SIMBAD. wikidata.org.
[6] ↑ Q81944538 — catalog code (P528): SDSS J093842.78+050141.5. SIMBAD. wikidata.org.
[7] ↑ Q81944538 — catalog code (P528): SDSS J093842.78+050141.6. SIMBAD. wikidata.org.
[8] ↑ Q81944538 — redshift (P1090): {'unit': '1', 'amount': '-0.00001'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[9] ↑ Q81944538 — apparent magnitude (P1215): {'unit': '1', 'amount': '+23.430'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[10] ↑ Q81944538 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.608'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81944538 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.597'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81944538 — apparent magnitude (P1215): {'unit': '1', 'amount': '+20.434'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81944538 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.607'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q81944538 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.24'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[15] ↑ Q81944538 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.357'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81944538 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.592'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81944538 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+21'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[18] ↑ Q81944538 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+241.1'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[19] ↑ Q81944538 — SIMBAD ID (P3083): 2MASS J09384278+0501417. wikidata.org.
[20] ↑ Q81944538 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+144.6782875'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[21] ↑ Q81944538 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+5.0282750'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[22] ↑ Q81944538 — epoch (P6259): J2000.0. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[23] ↑ Q81944538 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-34'}. Discovery of the first wide L dwarf + giant binary system and eight other ultracool dwarfs in wide binaries. wikidata.org.
[24] ↑ Q81944538 — right ascension component of proper motion (P10752): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-40'}. Discovery of the first wide L dwarf + giant binary system and eight other ultracool dwarfs in wide binaries. wikidata.org.
[25] ↑ Q81944538 — Gaia ID (P13228): 3851582123928732544. wikidata.org.

Class ancestry

[1] ↑ Q81944538 is an instance of brown dwarf (Q101600) [P31, primary]. 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). Q81944538. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81944538

MLA “Q81944538.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81944538.

BibTeX

@misc{4ortxyz_q81944538_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81944538}}, year = {2026}, url = {https://4ort.xyz/entity/q81944538}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81944538 — https://4ort.xyz/entity/q81944538 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81944538 · Last refreshed: May 7, 2026