Q74738531

Thing white_dwarf Q74738531

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Q74738531

Summary

Q74738531 is a white dwarf^[1].

Key Facts

Q74738531's instance of is recorded as white dwarf^[2].
Q74738531's spectral class is recorded as DA^[3].
Q74738531's catalog code is recorded as SBSS 1553+521^[4].
Q74738531's catalog code is recorded as SDSS J155459.82+520239.3^[5].
Q74738531's catalog code is recorded as SDSS J155459.82+520239.2^[6].
Q74738531's catalog code is recorded as Gaia DR2 1404645242859150336^[7].
Q74738531's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.0'}^[8].
Q74738531's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.865'}^[9].
Q74738531's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.932'}^[10].
Q74738531's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.083'}^[11].
Q74738531's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.649'}^[12].
Q74738531's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.357'}^[13].
Q74738531's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.1535'}^[14].
Q74738531's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+3.0915'}^[15].
Q74738531's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+323.4676'}^[16].
Q74738531's SIMBAD ID is recorded as SBSS 1553+521^[17].
Q74738531's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+238.74929882794430'}^[18].
Q74738531's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+52.04424683046310'}^[19].
Q74738531's epoch is recorded as J2000.0^[20].
Q74738531's effective temperature is recorded as {'unit': 'http://www.wikidata.org/entity/Q11579', 'amount': '+22810'}^[21].
Q74738531's surface gravity is recorded as {'unit': 'http://www.wikidata.org/entity/Q39699418', 'amount': '+63700000'}^[22].
Q74738531's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-15.331'}^[23].
Q74738531's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+0.302'}^[24].
Q74738531's Gaia ID is recorded as 1404645242859150336^[25].

⭐ Popularity Graph

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Quick Facts

Instance of white dwarf

Properties

Apparent magnitude unit: 1, amount: +18.0, unit: 1, amount: +17.865, unit: 1, amount: +17.932, unit: 1, amount: +19.083, unit: 1, amount: +18.649, unit: 1, amount: +18.357, unit: 1, amount: +18.1535

Catalog code SBSS 1553+521, SDSS J155459.82+520239.3, SDSS J155459.82+520239.2, Gaia DR2 1404645242859150336

Declination unit: www.wikidata.org, amount: +52.04424683046310

Declination component of proper motion unit: www.wikidata.org, amount: -15.331

Distance from earth unit: www.wikidata.org, amount: +323.4676

Effective temperature unit: www.wikidata.org, amount: +22810

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +3.0915

Right ascension unit: www.wikidata.org, amount: +238.74929882794430

Right ascension component of proper motion unit: www.wikidata.org, amount: +0.302

Spectral class DA

Surface gravity unit: www.wikidata.org, amount: +63700000

External References (2)

Gaia id 1404645242859150336

Simbad id SBSS 1553+521

References

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

Direct Wikidata claims

[2] ↑ Q74738531 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q74738531 — spectral class (P215): DA. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[4] ↑ Q74738531 — catalog code (P528): SBSS 1553+521. SIMBAD. wikidata.org.
[5] ↑ Q74738531 — catalog code (P528): SDSS J155459.82+520239.3. SIMBAD. wikidata.org.
[6] ↑ Q74738531 — catalog code (P528): SDSS J155459.82+520239.2. SIMBAD. wikidata.org.
[7] ↑ Q74738531 — catalog code (P528): Gaia DR2 1404645242859150336. SIMBAD. wikidata.org.
[8] ↑ Q74738531 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.0'}. SIMBAD. wikidata.org.
[9] ↑ Q74738531 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.865'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[10] ↑ Q74738531 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.932'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[11] ↑ Q74738531 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.083'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[12] ↑ Q74738531 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.649'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[13] ↑ Q74738531 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.357'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[14] ↑ Q74738531 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.1535'}. Gaia Data Release 2. wikidata.org.
[15] ↑ Q74738531 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+3.0915'}. Gaia Data Release 2. wikidata.org.
[16] ↑ Q74738531 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+323.4676'}. Gaia Data Release 2. wikidata.org.
[17] ↑ Q74738531 — SIMBAD ID (P3083): SBSS 1553+521. wikidata.org.
[18] ↑ Q74738531 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+238.74929882794430'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q74738531 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+52.04424683046310'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q74738531 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[21] ↑ Q74738531 — effective temperature (P6879): {'unit': 'http://www.wikidata.org/entity/Q11579', 'amount': '+22810'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[22] ↑ Q74738531 — surface gravity (P7015): {'unit': 'http://www.wikidata.org/entity/Q39699418', 'amount': '+63700000'}. New white dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 12. wikidata.org.
[23] ↑ Q74738531 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-15.331'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q74738531 — right ascension component of proper motion (P10752): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+0.302'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q74738531 — Gaia ID (P13228): 1404645242859150336. wikidata.org.

Class ancestry

[1] ↑ Q74738531 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). Q74738531. Retrieved May 7, 2026, from https://4ort.xyz/entity/q74738531

MLA “Q74738531.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q74738531.

BibTeX

@misc{4ortxyz_q74738531_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q74738531}}, year = {2026}, url = {https://4ort.xyz/entity/q74738531}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q74738531 — https://4ort.xyz/entity/q74738531 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q74738531 · Last refreshed: May 7, 2026