Q91540631

white dwarf in the constellation Aquarius

Thing white_dwarf Q91540631

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Q91540631

Summary

Q91540631 is a white dwarf^[1].

Key Facts

Q91540631's instance of is recorded as white dwarf^[2].
Q91540631's constellation is recorded as Aquarius^[3].
Q91540631's spectral class is recorded as DA^[4].
Q91540631's catalog code is recorded as USNO-A2.0 0825-19225096^[5].
Q91540631's catalog code is recorded as GALEX 2668851175523094198^[6].
Q91540631's catalog code is recorded as SDSS J212808.49-000750.8^[7].
Q91540631's catalog code is recorded as SDSS J212808.49-000750.9^[8].
Q91540631's catalog code is recorded as EQ J2128-0007^[9].
Q91540631's catalog code is recorded as WD 2125-003^[10].
Q91540631's catalog code is recorded as SDSS J212808.50-000750.8^[11].
Q91540631's catalog code is recorded as Gaia DR2 2687661650459472000^[12].
Q91540631's type of variable star is recorded as pulsating white dwarf^[13].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.03'}^[14].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.67'}^[15].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.46'}^[16].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.938'}^[17].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.2'}^[18].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.3'}^[19].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.360'}^[20].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.085'}^[21].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.272'}^[22].
Q91540631's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.0343'}^[23].
Q91540631's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+6.0672'}^[24].
Q91540631's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+164.8207'}^[25].
Q91540631's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+322.03536436311890'}^[26].

Body

Definition and Type

Q91540631's instance of is recorded as white dwarf^[2].

⭐ Popularity Graph

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Quick Facts

Instance of white dwarf

Properties

Apparent magnitude unit: 1, amount: +18.03, unit: 1, amount: +17.67, unit: 1, amount: +18.46, unit: 1, amount: +17.938, unit: 1, amount: +18.2, unit: 1, amount: +18.3, unit: 1, amount: +18.360, unit: 1, amount: +18.085, unit: 1, amount: +18.272, unit: 1, amount: +18.0343

Catalog code USNO-A2.0 0825-19225096, GALEX 2668851175523094198, SDSS J212808.49-000750.8, SDSS J212808.49-000750.9, EQ J2128-0007, WD 2125-003, SDSS J212808.50-000750.8, Gaia DR2 2687661650459472000

Constellation Aquarius

Declination unit: www.wikidata.org, amount: -0.13081065571150

Declination component of proper motion unit: www.wikidata.org, amount: +22.202

Distance from earth unit: www.wikidata.org, amount: +164.8207

Effective temperature unit: www.wikidata.org, amount: +11395

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +6.0672

Right ascension unit: www.wikidata.org, amount: +322.03536436311890

Right ascension component of proper motion unit: www.wikidata.org, amount: +43.261

Spectral class DA

Surface gravity unit: www.wikidata.org, amount: +204000000

Type of variable star pulsating white dwarf

External References (2)

Gaia id 2687661650459472000

Simbad id GALEX J212808.4-000749

References

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

Direct Wikidata claims

[2] ↑ Q91540631 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q91540631 — constellation (P59): Aquarius. wikidata.org.
[4] ↑ Q91540631 — spectral class (P215): DA. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4. wikidata.org.
[5] ↑ Q91540631 — catalog code (P528): USNO-A2.0 0825-19225096. SIMBAD. wikidata.org.
[6] ↑ Q91540631 — catalog code (P528): GALEX 2668851175523094198. SIMBAD. wikidata.org.
[7] ↑ Q91540631 — catalog code (P528): SDSS J212808.49-000750.8. SIMBAD. wikidata.org.
[8] ↑ Q91540631 — catalog code (P528): SDSS J212808.49-000750.9. SIMBAD. wikidata.org.
[9] ↑ Q91540631 — catalog code (P528): EQ J2128-0007. SIMBAD. wikidata.org.
[10] ↑ Q91540631 — catalog code (P528): WD 2125-003. SIMBAD. wikidata.org.
[11] ↑ Q91540631 — catalog code (P528): SDSS J212808.50-000750.8. SIMBAD. wikidata.org.
[12] ↑ Q91540631 — catalog code (P528): Gaia DR2 2687661650459472000. SIMBAD. wikidata.org.
[13] ↑ Q91540631 — type of variable star (P881): pulsating white dwarf. Discovery of eleven new ZZ Ceti stars. wikidata.org.
[14] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.03'}. SIMBAD. wikidata.org.
[15] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.67'}. SIMBAD. wikidata.org.
[16] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.46'}. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission. wikidata.org.
[17] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.938'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[18] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.2'}. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission. wikidata.org.
[19] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.3'}. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission. wikidata.org.
[20] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.360'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[21] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.085'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[22] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.272'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[23] ↑ Q91540631 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.0343'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q91540631 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+6.0672'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q91540631 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+164.8207'}. Gaia Data Release 2. wikidata.org.
[26] ↑ Q91540631 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+322.03536436311890'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q91540631 is an instance of white dwarf (Q5871) [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). Q91540631. Retrieved May 7, 2026, from https://4ort.xyz/entity/q91540631

MLA “Q91540631.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q91540631.

BibTeX

@misc{4ortxyz_q91540631_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q91540631}}, year = {2026}, url = {https://4ort.xyz/entity/q91540631}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q91540631 — https://4ort.xyz/entity/q91540631 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q91540631 · Last refreshed: May 7, 2026