Q81945058

Thing brown_dwarf Q81945058

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Q81945058

Summary

Q81945058 is a brown dwarf^[1].

Key Facts

Q81945058's instance of is recorded as brown dwarf^[2].
Q81945058's constellation is recorded as Hydra^[3].
Q81945058's spectral class is recorded as M9V^[4].
Q81945058's catalog code is recorded as 2MASS J09191716+0204527^[5].
Q81945058's catalog code is recorded as SDSS J091917.16+020452.8^[6].
Q81945058's catalog code is recorded as SDSS J091917.16+020452.9^[7].
Q81945058's catalog code is recorded as Gaia DR2 3845109981876152064^[8].
Q81945058's redshift is recorded as {'unit': '1', 'amount': '-0.00006'}^[9].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.734'}^[10].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+23.364'}^[11].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+21.593'}^[12].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.811'}^[13].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.197'}^[14].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.095'}^[15].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.335'}^[16].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+13.972'}^[17].
Q81945058's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.4272'}^[18].
Q81945058's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+9.9081'}^[19].
Q81945058's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+27'}^[20].
Q81945058's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+100.9275'}^[21].
Q81945058's SIMBAD ID is recorded as 2MASS J09191716+0204527^[22].
Q81945058's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+139.82154295942390'}^[23].
Q81945058's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+2.08135782063610'}^[24].
Q81945058's epoch is recorded as J2000.0^[25].
Q81945058's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-9.163'}^[26].

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Quick Facts

Instance of brown dwarf

Properties

Apparent magnitude unit: 1, amount: +24.734, unit: 1, amount: +23.364, unit: 1, amount: +21.593, unit: 1, amount: +18.811, unit: 1, amount: +17.197, unit: 1, amount: +15.095, unit: 1, amount: +14.335, unit: 1, amount: +13.972, unit: 1, amount: +19.4272

Catalog code 2MASS J09191716+0204527, SDSS J091917.16+020452.8, SDSS J091917.16+020452.9, Gaia DR2 3845109981876152064

Constellation Hydra

Declination unit: www.wikidata.org, amount: +2.08135782063610

Declination component of proper motion unit: www.wikidata.org, amount: -9.163

Distance from earth unit: www.wikidata.org, amount: +100.9275

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +9.9081

Radial velocity unit: www.wikidata.org, amount: +27

Redshift unit: 1, amount: -0.00006

Right ascension unit: www.wikidata.org, amount: +139.82154295942390

Right ascension component of proper motion unit: www.wikidata.org, amount: -38.261

Spectral class M9V

External References (2)

Gaia id 3845109981876152064

Simbad id 2MASS J09191716+0204527

References

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

Direct Wikidata claims

[2] ↑ Q81945058 — instance of (P31): brown dwarf. SIMBAD. wikidata.org.
[3] ↑ Q81945058 — constellation (P59): Hydra. wikidata.org.
[4] ↑ Q81945058 — spectral class (P215): M9V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81945058 — catalog code (P528): 2MASS J09191716+0204527. SIMBAD. wikidata.org.
[6] ↑ Q81945058 — catalog code (P528): SDSS J091917.16+020452.8. SIMBAD. wikidata.org.
[7] ↑ Q81945058 — catalog code (P528): SDSS J091917.16+020452.9. SIMBAD. wikidata.org.
[8] ↑ Q81945058 — catalog code (P528): Gaia DR2 3845109981876152064. SIMBAD. wikidata.org.
[9] ↑ Q81945058 — redshift (P1090): {'unit': '1', 'amount': '-0.00006'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[10] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.734'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+23.364'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+21.593'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.811'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.197'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[15] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.095'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.335'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+13.972'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[18] ↑ Q81945058 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.4272'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81945058 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+9.9081'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q81945058 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+27'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81945058 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+100.9275'}. Gaia Data Release 2. wikidata.org.
[22] ↑ Q81945058 — SIMBAD ID (P3083): 2MASS J09191716+0204527. wikidata.org.
[23] ↑ Q81945058 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+139.82154295942390'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81945058 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+2.08135782063610'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81945058 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81945058 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-9.163'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81945058 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). Q81945058. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81945058

MLA “Q81945058.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81945058.

BibTeX

@misc{4ortxyz_q81945058_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81945058}}, year = {2026}, url = {https://4ort.xyz/entity/q81945058}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81945058 — https://4ort.xyz/entity/q81945058 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81945058 · Last refreshed: May 7, 2026