Q77691637

white dwarf in the constellation Ursa Major

Thing white_dwarf Q77691637

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Q77691637

Summary

Q77691637 is a white dwarf^[1].

Key Facts

Q77691637's instance of is recorded as white dwarf^[2].
Q77691637's constellation is recorded as Ursa Major^[3].
Q77691637's spectral class is recorded as DA^[4].
Q77691637's catalog code is recorded as USNO-A2.0 1425-08038392^[5].
Q77691637's catalog code is recorded as GALEX 2685810042869909665^[6].
Q77691637's catalog code is recorded as SDSS J135531.03+545404.5^[7].
Q77691637's catalog code is recorded as EQ J1355+5454^[8].
Q77691637's catalog code is recorded as WD 1353+551^[9].
Q77691637's catalog code is recorded as Gaia DR2 1561336301335358080^[10].
Q77691637's redshift is recorded as {'unit': '1', 'amount': '+0.00013'}^[11].
Q77691637's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.2'}^[12].
Q77691637's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.2'}^[13].
Q77691637's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.14'}^[14].
Q77691637's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.008'}^[15].
Q77691637's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.737'}^[16].
Q77691637's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.933'}^[17].
Q77691637's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.581'}^[18].
Q77691637's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.6665'}^[19].
Q77691637's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+4.3330'}^[20].
Q77691637's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+39'}^[21].
Q77691637's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+230.7870'}^[22].
Q77691637's SIMBAD ID is recorded as GALEX J135530.9+545404^[23].
Q77691637's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+208.87941457844120'}^[24].
Q77691637's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+54.90125518788370'}^[25].
Q77691637's epoch is recorded as J2000.0^[26].

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Quick Facts

Instance of white dwarf

Properties

Apparent magnitude unit: 1, amount: +18.2, unit: 1, amount: +18.2, unit: 1, amount: +19.14, unit: 1, amount: +19.008, unit: 1, amount: +18.737, unit: 1, amount: +18.933, unit: 1, amount: +18.581, unit: 1, amount: +18.6665

Catalog code USNO-A2.0 1425-08038392, GALEX 2685810042869909665, SDSS J135531.03+545404.5, EQ J1355+5454, WD 1353+551, Gaia DR2 1561336301335358080

Constellation Ursa Major

Declination unit: www.wikidata.org, amount: +54.90125518788370

Declination component of proper motion unit: www.wikidata.org, amount: +3.657

Distance from earth unit: www.wikidata.org, amount: +230.7870

Effective temperature unit: www.wikidata.org, amount: +11494

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +4.3330

Radial velocity unit: www.wikidata.org, amount: +39

Redshift unit: 1, amount: +0.00013

Right ascension unit: www.wikidata.org, amount: +208.87941457844120

Right ascension component of proper motion unit: www.wikidata.org, amount: -82.917

Spectral class DA

Surface gravity unit: www.wikidata.org, amount: +95000000

External References (2)

Gaia id 1561336305631985152

Simbad id GALEX J135530.9+545404

References

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

Direct Wikidata claims

[2] ↑ Q77691637 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q77691637 — constellation (P59): Ursa Major. wikidata.org.
[4] ↑ Q77691637 — spectral class (P215): DA. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4. wikidata.org.
[5] ↑ Q77691637 — catalog code (P528): USNO-A2.0 1425-08038392. SIMBAD. wikidata.org.
[6] ↑ Q77691637 — catalog code (P528): GALEX 2685810042869909665. SIMBAD. wikidata.org.
[7] ↑ Q77691637 — catalog code (P528): SDSS J135531.03+545404.5. SIMBAD. wikidata.org.
[8] ↑ Q77691637 — catalog code (P528): EQ J1355+5454. SIMBAD. wikidata.org.
[9] ↑ Q77691637 — catalog code (P528): WD 1353+551. SIMBAD. wikidata.org.
[10] ↑ Q77691637 — catalog code (P528): Gaia DR2 1561336301335358080. SIMBAD. wikidata.org.
[11] ↑ Q77691637 — redshift (P1090): {'unit': '1', 'amount': '+0.00013'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q77691637 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.2'}. USNO-A2.0. wikidata.org.
[13] ↑ Q77691637 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.2'}. USNO-A2.0. wikidata.org.
[14] ↑ Q77691637 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.14'}. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission. wikidata.org.
[15] ↑ Q77691637 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.008'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[16] ↑ Q77691637 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.737'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[17] ↑ Q77691637 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.933'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[18] ↑ Q77691637 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.581'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[19] ↑ Q77691637 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.6665'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q77691637 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+4.3330'}. Gaia Data Release 2. wikidata.org.
[21] ↑ Q77691637 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+39'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[22] ↑ Q77691637 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+230.7870'}. Gaia Data Release 2. wikidata.org.
[23] ↑ Q77691637 — SIMBAD ID (P3083): GALEX J135530.9+545404. wikidata.org.
[24] ↑ Q77691637 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+208.87941457844120'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q77691637 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+54.90125518788370'}. Gaia Data Release 2. wikidata.org.
[26] ↑ Q77691637 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q77691637 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). Q77691637. Retrieved May 7, 2026, from https://4ort.xyz/entity/q77691637

MLA “Q77691637.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q77691637.

BibTeX

@misc{4ortxyz_q77691637_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q77691637}}, year = {2026}, url = {https://4ort.xyz/entity/q77691637}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q77691637 — https://4ort.xyz/entity/q77691637 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q77691637 · Last refreshed: May 7, 2026