Q78259426

white dwarf in the constellation Hercules

Thing white_dwarf Q78259426

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Q78259426

Summary

Q78259426 is a white dwarf^[1].

Key Facts

Q78259426's instance of is recorded as white dwarf^[2].
Q78259426's constellation is recorded as Hercules^[3].
Q78259426's spectral class is recorded as DA^[4].
Q78259426's catalog code is recorded as 2MASS J16392030+4030413^[5].
Q78259426's catalog code is recorded as SDSS J163920.29+403041.5^[6].
Q78259426's catalog code is recorded as [CCS88] 1637.7+4036^[7].
Q78259426's catalog code is recorded as SDSS J163920.30+403041.5^[8].
Q78259426's catalog code is recorded as WIRED J163920.29+403041.5^[9].
Q78259426's catalog code is recorded as WD 1637+406^[10].
Q78259426's catalog code is recorded as LAMOST J163920.29+403041.5^[11].
Q78259426's catalog code is recorded as Gaia DR2 1355979969155873792^[12].
Q78259426's redshift is recorded as {'unit': '1', 'amount': '+0.00009'}^[13].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.0'}^[14].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.513'}^[15].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.034'}^[16].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.078'}^[17].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.355'}^[18].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.735'}^[19].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.488'}^[20].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.062'}^[21].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.177'}^[22].
Q78259426's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.9994'}^[23].
Q78259426's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+15.9802'}^[24].
Q78259426's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+27'}^[25].
Q78259426's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+62.5774'}^[26].

Body

Definition and Type

Q78259426'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: +17.0, unit: 1, amount: +16.513, unit: 1, amount: +17.034, unit: 1, amount: +17.078, unit: 1, amount: +16.355, unit: 1, amount: +15.735, unit: 1, amount: +17.488, unit: 1, amount: +17.062, unit: 1, amount: +17.177, unit: 1, amount: +16.9994

Catalog code 2MASS J16392030+4030413, SDSS J163920.29+403041.5, [CCS88] 1637.7+4036, SDSS J163920.30+403041.5, WIRED J163920.29+403041.5, WD 1637+406, LAMOST J163920.29+403041.5, Gaia DR2 1355979969155873792

Constellation Hercules

Declination unit: www.wikidata.org, amount: +40.51151240094480

Declination component of proper motion unit: www.wikidata.org, amount: +56.366

Distance from earth unit: www.wikidata.org, amount: +62.5774

Effective temperature unit: www.wikidata.org, amount: +8235

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +15.9802

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

Redshift unit: 1, amount: +0.00009

Right ascension unit: www.wikidata.org, amount: +249.83453623682440

Right ascension component of proper motion unit: www.wikidata.org, amount: +19.093

Spectral class DA

Surface gravity unit: www.wikidata.org, amount: +150000000

External References (2)

Gaia id 1355979969155873792

Simbad id GALEX J163920.3+403041

References

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

Direct Wikidata claims

[2] ↑ Q78259426 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q78259426 — constellation (P59): Hercules. wikidata.org.
[4] ↑ Q78259426 — spectral class (P215): DA. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4. wikidata.org.
[5] ↑ Q78259426 — catalog code (P528): 2MASS J16392030+4030413. SIMBAD. wikidata.org.
[6] ↑ Q78259426 — catalog code (P528): SDSS J163920.29+403041.5. SIMBAD. wikidata.org.
[7] ↑ Q78259426 — catalog code (P528): [CCS88] 1637.7+4036. SIMBAD. wikidata.org.
[8] ↑ Q78259426 — catalog code (P528): SDSS J163920.30+403041.5. SIMBAD. wikidata.org.
[9] ↑ Q78259426 — catalog code (P528): WIRED J163920.29+403041.5. SIMBAD. wikidata.org.
[10] ↑ Q78259426 — catalog code (P528): WD 1637+406. SIMBAD. wikidata.org.
[11] ↑ Q78259426 — catalog code (P528): LAMOST J163920.29+403041.5. SIMBAD. wikidata.org.
[12] ↑ Q78259426 — catalog code (P528): Gaia DR2 1355979969155873792. SIMBAD. wikidata.org.
[13] ↑ Q78259426 — redshift (P1090): {'unit': '1', 'amount': '+0.00009'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.0'}. SIMBAD. wikidata.org.
[15] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.513'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.034'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[17] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.078'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[18] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.355'}. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog. wikidata.org.
[19] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.735'}. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog. wikidata.org.
[20] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.488'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[21] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.062'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[22] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.177'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[23] ↑ Q78259426 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.9994'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q78259426 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+15.9802'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q78259426 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+27'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[26] ↑ Q78259426 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+62.5774'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q78259426 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). Q78259426. Retrieved May 7, 2026, from https://4ort.xyz/entity/q78259426

MLA “Q78259426.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q78259426.

BibTeX

@misc{4ortxyz_q78259426_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q78259426}}, year = {2026}, url = {https://4ort.xyz/entity/q78259426}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q78259426 — https://4ort.xyz/entity/q78259426 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q78259426 · Last refreshed: May 7, 2026