Q77416454

white dwarf in the constellation Leo Minor

Thing white_dwarf Q77416454

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Q77416454

Summary

Q77416454 is a white dwarf^[1].

Key Facts

Q77416454's instance of is recorded as white dwarf^[2].
Q77416454's constellation is recorded as Leo Minor^[3].
Q77416454's spectral class is recorded as DA+M^[4].
Q77416454's catalog code is recorded as 2MASS J10201454+3553213^[5].
Q77416454's catalog code is recorded as SDSS J102014.53+355320.7^[6].
Q77416454's catalog code is recorded as [HHD2009] SDSS J1020+3553^[7].
Q77416454's catalog code is recorded as [SLH2007] J102014.53+355320.8^[8].
Q77416454's catalog code is recorded as [RGS2010] J102014.53+355320.7^[9].
Q77416454's catalog code is recorded as SDSS J102014.53+355320.8^[10].
Q77416454's catalog code is recorded as WIRED J102014.53+355320.7^[11].
Q77416454's catalog code is recorded as WD 1017+361^[12].
Q77416454's catalog code is recorded as Gaia DR2 753045996216634880^[13].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+20.044'}^[14].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.469'}^[15].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.346'}^[16].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.747'}^[17].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.162'}^[18].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.634'}^[19].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.399'}^[20].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.027'}^[21].
Q77416454's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.0674'}^[22].
Q77416454's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+3.0239'}^[23].
Q77416454's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+33'}^[24].
Q77416454's metallicity is recorded as {'unit': '1', 'amount': '+0.0'}^[25].
Q77416454's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+1230'}^[26].

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Quick Facts

Instance of white dwarf

Properties

Apparent magnitude unit: 1, amount: +20.044, unit: 1, amount: +19.469, unit: 1, amount: +19.346, unit: 1, amount: +18.747, unit: 1, amount: +18.162, unit: 1, amount: +16.634, unit: 1, amount: +16.399, unit: 1, amount: +16.027, unit: 1, amount: +19.0674

Catalog code 2MASS J10201454+3553213, SDSS J102014.53+355320.7, [HHD2009] SDSS J1020+3553, [SLH2007] J102014.53+355320.8, [RGS2010] J102014.53+355320.7, SDSS J102014.53+355320.8, WIRED J102014.53+355320.7, WD 1017+361, Gaia DR2 753045996216634880

Constellation Leo Minor

Declination unit: www.wikidata.org, amount: +35.88912048438990

Declination component of proper motion unit: www.wikidata.org, amount: -31.220

Distance from earth unit: www.wikidata.org, amount: +1230

Effective temperature unit: www.wikidata.org, amount: +6311

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Metallicity unit: 1, amount: +0.0

Parallax unit: www.wikidata.org, amount: +3.0239

Radial velocity unit: www.wikidata.org, amount: +33

Right ascension unit: www.wikidata.org, amount: +155.06058608418930

Right ascension component of proper motion unit: www.wikidata.org, amount: -21.154

Spectral class DA+M

Surface gravity unit: www.wikidata.org, amount: +420000

External References (2)

Gaia id 753045996216634880

Simbad id GALEX J102014.5+355320

References

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

Direct Wikidata claims

[2] ↑ Q77416454 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q77416454 — constellation (P59): Leo Minor. wikidata.org.
[4] ↑ Q77416454 — spectral class (P215): DA+M. White dwarf-main sequence binaries identified within SDSS DR7 and UKIDSS DR5. wikidata.org.
[5] ↑ Q77416454 — catalog code (P528): 2MASS J10201454+3553213. SIMBAD. wikidata.org.
[6] ↑ Q77416454 — catalog code (P528): SDSS J102014.53+355320.7. SIMBAD. wikidata.org.
[7] ↑ Q77416454 — catalog code (P528): [HHD2009] SDSS J1020+3553. SIMBAD. wikidata.org.
[8] ↑ Q77416454 — catalog code (P528): [SLH2007] J102014.53+355320.8. SIMBAD. wikidata.org.
[9] ↑ Q77416454 — catalog code (P528): [RGS2010] J102014.53+355320.7. SIMBAD. wikidata.org.
[10] ↑ Q77416454 — catalog code (P528): SDSS J102014.53+355320.8. SIMBAD. wikidata.org.
[11] ↑ Q77416454 — catalog code (P528): WIRED J102014.53+355320.7. SIMBAD. wikidata.org.
[12] ↑ Q77416454 — catalog code (P528): WD 1017+361. SIMBAD. wikidata.org.
[13] ↑ Q77416454 — catalog code (P528): Gaia DR2 753045996216634880. SIMBAD. wikidata.org.
[14] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+20.044'}. The Fifth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[15] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.469'}. The Fifth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[16] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.346'}. The Fifth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[17] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.747'}. The Fifth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[18] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.162'}. The Fifth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[19] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.634'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[20] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.399'}. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog. wikidata.org.
[21] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.027'}. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog. wikidata.org.
[22] ↑ Q77416454 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.0674'}. Gaia Data Release 2. wikidata.org.
[23] ↑ Q77416454 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+3.0239'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q77416454 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+33'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[25] ↑ Q77416454 — metallicity (P2227): {'unit': '1', 'amount': '+0.0'}. White dwarf-main sequence binaries identified within SDSS DR7 and UKIDSS DR5. wikidata.org.
[26] ↑ Q77416454 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+1230'}. The WIRED survey. II. Infrared excesses in the SDSS DR7 white dwarf catalog. wikidata.org.

Class ancestry

[1] ↑ Q77416454 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). Q77416454. Retrieved May 7, 2026, from https://4ort.xyz/entity/q77416454

MLA “Q77416454.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q77416454.

BibTeX

@misc{4ortxyz_q77416454_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q77416454}}, year = {2026}, url = {https://4ort.xyz/entity/q77416454}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q77416454 — https://4ort.xyz/entity/q77416454 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q77416454 · Last refreshed: May 7, 2026