Q81753913

white dwarf in the constellation Ursa Major

Thing white_dwarf Q81753913

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Q81753913

Summary

Q81753913 is a white dwarf^[1].

Key Facts

Q81753913's instance of is recorded as white dwarf^[2].
Q81753913's constellation is recorded as Ursa Major^[3].
Q81753913's spectral class is recorded as DA:^[4].
Q81753913's catalog code is recorded as SDSS J135440.12+550418.2^[5].
Q81753913's catalog code is recorded as Gaia DR2 1561529162546762752^[6].
Q81753913's apparent magnitude is recorded as {'unit': '1', 'amount': '+20.144'}^[7].
Q81753913's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.601'}^[8].
Q81753913's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.408'}^[9].
Q81753913's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.351'}^[10].
Q81753913's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.363'}^[11].
Q81753913's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.4519'}^[12].
Q81753913's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+5.7801'}^[13].
Q81753913's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+173.0074'}^[14].
Q81753913's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+208.66721772031440'}^[15].
Q81753913's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+55.07165919535270'}^[16].
Q81753913's epoch is recorded as J2000.0^[17].
Q81753913's effective temperature is recorded as {'unit': 'http://www.wikidata.org/entity/Q11579', 'amount': '+6658'}^[18].
Q81753913's surface gravity is recorded as {'unit': 'http://www.wikidata.org/entity/Q39699418', 'amount': '+15400000'}^[19].
Q81753913's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+0.501'}^[20].
Q81753913's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-7.348'}^[21].

Body

Definition and Type

Q81753913's instance of is recorded as white dwarf^[2].

⭐ Popularity Graph

0/100 long tail

Quick Facts

Instance of white dwarf

Properties

Apparent magnitude unit: 1, amount: +20.144, unit: 1, amount: +19.601, unit: 1, amount: +19.408, unit: 1, amount: +19.351, unit: 1, amount: +19.363, unit: 1, amount: +19.4519

Catalog code SDSS J135440.12+550418.2, Gaia DR2 1561529162546762752

Constellation Ursa Major

Declination unit: www.wikidata.org, amount: +55.07165919535270

Declination component of proper motion unit: www.wikidata.org, amount: +0.501

Distance from earth unit: www.wikidata.org, amount: +173.0074

Effective temperature unit: www.wikidata.org, amount: +6658

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +5.7801

Right ascension unit: www.wikidata.org, amount: +208.66721772031440

Right ascension component of proper motion unit: www.wikidata.org, amount: -7.348

Spectral class DA:

Surface gravity unit: www.wikidata.org, amount: +15400000

External References (2)

Gaia id 1561529162546762752

Simbad id GALEX J135440.0+550417

References

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

Direct Wikidata claims

[2] ↑ Q81753913 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q81753913 — constellation (P59): Ursa Major. wikidata.org.
[4] ↑ Q81753913 — spectral class (P215): DA:. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[5] ↑ Q81753913 — catalog code (P528): SDSS J135440.12+550418.2. SIMBAD. wikidata.org.
[6] ↑ Q81753913 — catalog code (P528): Gaia DR2 1561529162546762752. SIMBAD. wikidata.org.
[7] ↑ Q81753913 — apparent magnitude (P1215): {'unit': '1', 'amount': '+20.144'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[8] ↑ Q81753913 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.601'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[9] ↑ Q81753913 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.408'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[10] ↑ Q81753913 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.351'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[11] ↑ Q81753913 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.363'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[12] ↑ Q81753913 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.4519'}. Gaia Data Release 2. wikidata.org.
[13] ↑ Q81753913 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+5.7801'}. Gaia Data Release 2. wikidata.org.
[14] ↑ Q81753913 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+173.0074'}. Gaia Data Release 2. wikidata.org.
[15] ↑ Q81753913 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+208.66721772031440'}. Gaia Data Release 2. wikidata.org.
[16] ↑ Q81753913 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+55.07165919535270'}. Gaia Data Release 2. wikidata.org.
[17] ↑ Q81753913 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[18] ↑ Q81753913 — effective temperature (P6879): {'unit': 'http://www.wikidata.org/entity/Q11579', 'amount': '+6658'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[19] ↑ Q81753913 — surface gravity (P7015): {'unit': 'http://www.wikidata.org/entity/Q39699418', 'amount': '+15400000'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[20] ↑ Q81753913 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+0.501'}. Gaia Data Release 2. wikidata.org.
[21] ↑ Q81753913 — right ascension component of proper motion (P10752): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-7.348'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81753913 is an instance of white dwarf (Q5871) [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). Q81753913. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81753913

MLA “Q81753913.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81753913.

BibTeX

@misc{4ortxyz_q81753913_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81753913}}, year = {2026}, url = {https://4ort.xyz/entity/q81753913}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81753913 — https://4ort.xyz/entity/q81753913 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81753913 · Last refreshed: May 7, 2026