Q78201881

white dwarf in the constellation Boötes

Thing white_dwarf Q78201881

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Q78201881

Summary

Q78201881 is a white dwarf^[1].

Key Facts

Q78201881's instance of is recorded as white dwarf^[2].
Q78201881's constellation is recorded as Boötes^[3].
Q78201881's spectral class is recorded as DA^[4].
Q78201881's catalog code is recorded as GALEX J154456.8+451522^[5].
Q78201881's catalog code is recorded as PG 1543+454^[6].
Q78201881's catalog code is recorded as 2MASS J15445676+4515220^[7].
Q78201881's catalog code is recorded as SDSS J154456.80+451521.9^[8].
Q78201881's catalog code is recorded as SDSS J154456.80+451522.0^[9].
Q78201881's catalog code is recorded as WIRED J154456.80+451521.9^[10].
Q78201881's catalog code is recorded as WD 1543+454^[11].
Q78201881's catalog code is recorded as LAMOST J154456.80+451521.9^[12].
Q78201881's catalog code is recorded as Gaia DR2 1397494362828524800^[13].
Q78201881's redshift is recorded as {'unit': '1', 'amount': '+0.00001'}^[14].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.78'}^[15].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.851'}^[16].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.435'}^[17].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.869'}^[18].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.450'}^[19].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.823'}^[20].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.178'}^[21].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.896'}^[22].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.189'}^[23].
Q78201881's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.1971'}^[24].
Q78201881's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.0611'}^[25].
Q78201881's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+3'}^[26].

Body

Definition and Type

Q78201881'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: +15.78, unit: 1, amount: +16.851, unit: 1, amount: +15.435, unit: 1, amount: +15.869, unit: 1, amount: +16.450, unit: 1, amount: +16.823, unit: 1, amount: +17.178, unit: 1, amount: +16.896, unit: 1, amount: +17.189, unit: 1, amount: +16.1971

Catalog code GALEX J154456.8+451522, PG 1543+454, 2MASS J15445676+4515220, SDSS J154456.80+451521.9, SDSS J154456.80+451522.0, WIRED J154456.80+451521.9, WD 1543+454, LAMOST J154456.80+451521.9, Gaia DR2 1397494362828524800

Constellation Boötes

Declination unit: www.wikidata.org, amount: +45.25609255606170

Declination component of proper motion unit: www.wikidata.org, amount: +2.290

Distance from earth unit: www.wikidata.org, amount: +485.1778

Effective temperature unit: www.wikidata.org, amount: +76596

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +2.0611

Radial velocity unit: www.wikidata.org, amount: +3

Redshift unit: 1, amount: +0.00001

Right ascension unit: www.wikidata.org, amount: +236.23667808627150

Right ascension component of proper motion unit: www.wikidata.org, amount: +2.613

Spectral class DA

Surface gravity unit: www.wikidata.org, amount: +29500000, unit: www.wikidata.org, amount: +28000000, unit: www.wikidata.org, amount: +105000000

External References (2)

Gaia id 1397494362828524800

Simbad id PG 1543+454

References

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

Direct Wikidata claims

[2] ↑ Q78201881 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q78201881 — constellation (P59): Boötes. wikidata.org.
[4] ↑ Q78201881 — spectral class (P215): DA. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4. wikidata.org.
[5] ↑ Q78201881 — catalog code (P528): GALEX J154456.8+451522. SIMBAD. wikidata.org.
[6] ↑ Q78201881 — catalog code (P528): PG 1543+454. SIMBAD. wikidata.org.
[7] ↑ Q78201881 — catalog code (P528): 2MASS J15445676+4515220. SIMBAD. wikidata.org.
[8] ↑ Q78201881 — catalog code (P528): SDSS J154456.80+451521.9. SIMBAD. wikidata.org.
[9] ↑ Q78201881 — catalog code (P528): SDSS J154456.80+451522.0. SIMBAD. wikidata.org.
[10] ↑ Q78201881 — catalog code (P528): WIRED J154456.80+451521.9. SIMBAD. wikidata.org.
[11] ↑ Q78201881 — catalog code (P528): WD 1543+454. SIMBAD. wikidata.org.
[12] ↑ Q78201881 — catalog code (P528): LAMOST J154456.80+451521.9. SIMBAD. wikidata.org.
[13] ↑ Q78201881 — catalog code (P528): Gaia DR2 1397494362828524800. SIMBAD. wikidata.org.
[14] ↑ Q78201881 — redshift (P1090): {'unit': '1', 'amount': '+0.00001'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[15] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.78'}. SIMBAD. wikidata.org.
[16] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.851'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.435'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[18] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.869'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[19] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.450'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[20] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.823'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[21] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.178'}. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog. wikidata.org.
[22] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.896'}. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog. wikidata.org.
[23] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.189'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[24] ↑ Q78201881 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.1971'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q78201881 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.0611'}. Gaia Data Release 2. wikidata.org.
[26] ↑ Q78201881 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+3'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.

Class ancestry

[1] ↑ Q78201881 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). Q78201881. Retrieved May 7, 2026, from https://4ort.xyz/entity/q78201881

MLA “Q78201881.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q78201881.

BibTeX

@misc{4ortxyz_q78201881_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q78201881}}, year = {2026}, url = {https://4ort.xyz/entity/q78201881}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q78201881 — https://4ort.xyz/entity/q78201881 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q78201881 · Last refreshed: May 7, 2026