Q78269825

white dwarf in the constellation Hercules

Thing white_dwarf Q78269825

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Q78269825

Summary

Q78269825 is a white dwarf^[1].

Key Facts

Q78269825's instance of is recorded as white dwarf^[2].
Q78269825's constellation is recorded as Hercules^[3].
Q78269825's spectral class is recorded as DA+M^[4].
Q78269825's catalog code is recorded as WD 1644+424^[5].
Q78269825's catalog code is recorded as SDSS J164615.60+422349.2^[6].
Q78269825's catalog code is recorded as SDSS J164615.60+422349.3^[7].
Q78269825's catalog code is recorded as [HHD2009] SDSS J1646+4223^[8].
Q78269825's catalog code is recorded as [SHW2006] J164615.60+422349.2^[9].
Q78269825's catalog code is recorded as [SLH2007] J164615.60+422349.3^[10].
Q78269825's catalog code is recorded as [RGS2010] J164615.60+422349.2^[11].
Q78269825's catalog code is recorded as [SGR2010] J1646+4223^[12].
Q78269825's catalog code is recorded as [SGR2010] J164615.60+422349.2^[13].
Q78269825's catalog code is recorded as SBC9 3393^[14].
Q78269825's catalog code is recorded as WIRED J164615.60+422349.2^[15].
Q78269825's catalog code is recorded as Gaia DR2 1356644653998341248^[16].
Q78269825's redshift is recorded as {'unit': '1', 'amount': '+0.00021'}^[17].
Q78269825's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.751'}^[18].
Q78269825's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.550'}^[19].
Q78269825's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.227'}^[20].
Q78269825's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.394'}^[21].
Q78269825's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.95'}^[22].
Q78269825's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.1833'}^[23].
Q78269825's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.9008'}^[24].
Q78269825's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+63'}^[25].
Q78269825's metallicity is recorded as {'unit': '1', 'amount': '+0.0'}^[26].

Body

Definition and Type

Q78269825'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: +18.751, unit: 1, amount: +18.550, unit: 1, amount: +17.227, unit: 1, amount: +18.394, unit: 1, amount: +17.95, unit: 1, amount: +18.1833

Catalog code WD 1644+424, SDSS J164615.60+422349.2, SDSS J164615.60+422349.3, [HHD2009] SDSS J1646+4223, [SHW2006] J164615.60+422349.2, [SLH2007] J164615.60+422349.3, [RGS2010] J164615.60+422349.2, [SGR2010] J1646+4223, [SGR2010] J164615.60+422349.2, SBC9 3393, WIRED J164615.60+422349.2, Gaia DR2 1356644653998341248

Constellation Hercules

Declination unit: www.wikidata.org, amount: +42.39701784607510

Declination component of proper motion unit: www.wikidata.org, amount: -17.801

Distance from earth unit: www.wikidata.org, amount: +344.7325

Effective temperature unit: www.wikidata.org, amount: +8551

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Metallicity unit: 1, amount: +0.0

Parallax unit: www.wikidata.org, amount: +2.9008

Radial velocity unit: www.wikidata.org, amount: +63

Redshift unit: 1, amount: +0.00021

Right ascension unit: www.wikidata.org, amount: +251.56505073893570

Right ascension component of proper motion unit: www.wikidata.org, amount: -6.736

Spectral class DA+M

Surface gravity unit: www.wikidata.org, amount: +39000000

External References (2)

Gaia id 1356644653998341248

Simbad id SDSS J164615.60+422349.3

References

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

Direct Wikidata claims

[2] ↑ Q78269825 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q78269825 — constellation (P59): Hercules. wikidata.org.
[4] ↑ Q78269825 — spectral class (P215): DA+M. White dwarf-main sequence binaries identified within SDSS DR7 and UKIDSS DR5. wikidata.org.
[5] ↑ Q78269825 — catalog code (P528): WD 1644+424. SIMBAD. wikidata.org.
[6] ↑ Q78269825 — catalog code (P528): SDSS J164615.60+422349.2. SIMBAD. wikidata.org.
[7] ↑ Q78269825 — catalog code (P528): SDSS J164615.60+422349.3. SIMBAD. wikidata.org.
[8] ↑ Q78269825 — catalog code (P528): [HHD2009] SDSS J1646+4223. SIMBAD. wikidata.org.
[9] ↑ Q78269825 — catalog code (P528): [SHW2006] J164615.60+422349.2. SIMBAD. wikidata.org.
[10] ↑ Q78269825 — catalog code (P528): [SLH2007] J164615.60+422349.3. SIMBAD. wikidata.org.
[11] ↑ Q78269825 — catalog code (P528): [RGS2010] J164615.60+422349.2. SIMBAD. wikidata.org.
[12] ↑ Q78269825 — catalog code (P528): [SGR2010] J1646+4223. SIMBAD. wikidata.org.
[13] ↑ Q78269825 — catalog code (P528): [SGR2010] J164615.60+422349.2. SIMBAD. wikidata.org.
[14] ↑ Q78269825 — catalog code (P528): SBC9 3393. SIMBAD. wikidata.org.
[15] ↑ Q78269825 — catalog code (P528): WIRED J164615.60+422349.2. SIMBAD. wikidata.org.
[16] ↑ Q78269825 — catalog code (P528): Gaia DR2 1356644653998341248. SIMBAD. wikidata.org.
[17] ↑ Q78269825 — redshift (P1090): {'unit': '1', 'amount': '+0.00021'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[18] ↑ Q78269825 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.751'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[19] ↑ Q78269825 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.550'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[20] ↑ Q78269825 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.227'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[21] ↑ Q78269825 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.394'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[22] ↑ Q78269825 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.95'}. SDSS DR7 white dwarf catalog. wikidata.org.
[23] ↑ Q78269825 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.1833'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q78269825 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.9008'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q78269825 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+63'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[26] ↑ Q78269825 — metallicity (P2227): {'unit': '1', 'amount': '+0.0'}. White dwarf-main sequence binaries identified within SDSS DR7 and UKIDSS DR5. wikidata.org.

Class ancestry

[1] ↑ Q78269825 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). Q78269825. Retrieved May 7, 2026, from https://4ort.xyz/entity/q78269825

MLA “Q78269825.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q78269825.

BibTeX

@misc{4ortxyz_q78269825_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q78269825}}, year = {2026}, url = {https://4ort.xyz/entity/q78269825}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q78269825 — https://4ort.xyz/entity/q78269825 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q78269825 · Last refreshed: May 7, 2026