Q84221421

white dwarf in the constellation Hydra

Thing white_dwarf Q84221421

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Q84221421

Summary

Q84221421 is a white dwarf^[1].

Key Facts

Q84221421's instance of is recorded as white dwarf^[2].
Q84221421's constellation is recorded as Hydra^[3].
Q84221421's spectral class is recorded as DC^[4].
Q84221421's catalog code is recorded as WD 0920+013^[5].
Q84221421's catalog code is recorded as NLTT 21620^[6].
Q84221421's catalog code is recorded as LSPM J0923+0105^[7].
Q84221421's catalog code is recorded as USNO-B1.0 0910-00181021^[8].
Q84221421's catalog code is recorded as SDSS J092317.12+010513.0^[9].
Q84221421's catalog code is recorded as Gaia DR2 3844051225193053440^[10].
Q84221421's redshift is recorded as {'unit': '1', 'amount': '-0.00222'}^[11].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.4'}^[12].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.5'}^[13].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.62'}^[14].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.141'}^[15].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.992'}^[16].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.994'}^[17].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.070'}^[18].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.50'}^[19].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.38'}^[20].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.36'}^[21].
Q84221421's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.9990'}^[22].
Q84221421's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+15.1786'}^[23].
Q84221421's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-666'}^[24].
Q84221421's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+65.8822'}^[25].
Q84221421's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+140.82135776500150'}^[26].

Body

Definition and Type

Q84221421'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: +18.4, unit: 1, amount: +18.5, unit: 1, amount: +18.62, unit: 1, amount: +18.141, unit: 1, amount: +17.992, unit: 1, amount: +17.994, unit: 1, amount: +18.070, unit: 1, amount: +17.50, unit: 1, amount: +17.38, unit: 1, amount: +17.36, unit: 1, amount: +17.9990

Catalog code WD 0920+013, NLTT 21620, LSPM J0923+0105, USNO-B1.0 0910-00181021, SDSS J092317.12+010513.0, Gaia DR2 3844051225193053440

Constellation Hydra

Declination unit: www.wikidata.org, amount: +1.08698656846610

Declination component of proper motion unit: www.wikidata.org, amount: -169.743

Distance from earth unit: www.wikidata.org, amount: +65.8822

Effective temperature unit: www.wikidata.org, amount: +10080

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +15.1786

Radial velocity unit: www.wikidata.org, amount: -666

Redshift unit: 1, amount: -0.00222

Right ascension unit: www.wikidata.org, amount: +140.82135776500150

Right ascension component of proper motion unit: www.wikidata.org, amount: -69.162

Spectral class DC

Surface gravity unit: www.wikidata.org, amount: +66000000

External References (2)

Gaia id 3844051225193053440

Simbad id LP 607-37

References

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

Direct Wikidata claims

[2] ↑ Q84221421 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q84221421 — constellation (P59): Hydra. wikidata.org.
[4] ↑ Q84221421 — spectral class (P215): DC. A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4. wikidata.org.
[5] ↑ Q84221421 — catalog code (P528): WD 0920+013. SIMBAD. wikidata.org.
[6] ↑ Q84221421 — catalog code (P528): NLTT 21620. SIMBAD. wikidata.org.
[7] ↑ Q84221421 — catalog code (P528): LSPM J0923+0105. SIMBAD. wikidata.org.
[8] ↑ Q84221421 — catalog code (P528): USNO-B1.0 0910-00181021. SIMBAD. wikidata.org.
[9] ↑ Q84221421 — catalog code (P528): SDSS J092317.12+010513.0. SIMBAD. wikidata.org.
[10] ↑ Q84221421 — catalog code (P528): Gaia DR2 3844051225193053440. SIMBAD. wikidata.org.
[11] ↑ Q84221421 — redshift (P1090): {'unit': '1', 'amount': '-0.00222'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.4'}. The USNO-B Catalog. wikidata.org.
[13] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.5'}. The USNO-B Catalog. wikidata.org.
[14] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.62'}. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission. wikidata.org.
[15] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.141'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[16] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.992'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[17] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.994'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[18] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.070'}. The SDSS Photometric Catalog, Release 9. wikidata.org.
[19] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.50'}. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission. wikidata.org.
[20] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.38'}. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission. wikidata.org.
[21] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.36'}. DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission. wikidata.org.
[22] ↑ Q84221421 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.9990'}. Gaia Data Release 2. wikidata.org.
[23] ↑ Q84221421 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+15.1786'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q84221421 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-666'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[25] ↑ Q84221421 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+65.8822'}. Gaia Data Release 2. wikidata.org.
[26] ↑ Q84221421 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+140.82135776500150'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q84221421 is an instance of white dwarf (Q5871) [P31, primary]. Wikidata. wikidata.org.

📑 Cite this page

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APA 4ort.xyz Knowledge Graph. (2026). Q84221421. Retrieved May 7, 2026, from https://4ort.xyz/entity/q84221421

MLA “Q84221421.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q84221421.

BibTeX

@misc{4ortxyz_q84221421_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q84221421}}, year = {2026}, url = {https://4ort.xyz/entity/q84221421}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q84221421 — https://4ort.xyz/entity/q84221421 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q84221421 · Last refreshed: May 7, 2026