Q81755621

low-mass star in the constellation Cetus

Thing low_mass_star Q81755621

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Q81755621

Summary

Q81755621 is a low-mass star^[1].

Key Facts

Q81755621's instance of is recorded as low-mass star^[2].
Q81755621's constellation is recorded as Cetus^[3].
Q81755621's spectral class is recorded as M4V^[4].
Q81755621's catalog code is recorded as 2MASS J02194472+0045090^[5].
Q81755621's catalog code is recorded as SDSS J021944.70+004509.0^[6].
Q81755621's catalog code is recorded as SDSS J021944.70+004508.9^[7].
Q81755621's catalog code is recorded as SDSS J021944.71+004509.0^[8].
Q81755621's catalog code is recorded as Gaia DR2 2501145823682560768^[9].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.679'}^[10].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+21.398'}^[11].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.981'}^[12].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.725'}^[13].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.003'}^[14].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.291'}^[15].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.340'}^[16].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.40'}^[17].
Q81755621's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.4668'}^[18].
Q81755621's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+0.3530'}^[19].
Q81755621's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-39'}^[20].
Q81755621's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+592.3'}^[21].
Q81755621's SIMBAD ID is recorded as 2MASS J02194472+0045090^[22].
Q81755621's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+34.93627708514450'}^[23].
Q81755621's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+0.75250248303270'}^[24].
Q81755621's epoch is recorded as J2000.0^[25].
Q81755621's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+0.047'}^[26].

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Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +24.679, unit: 1, amount: +21.398, unit: 1, amount: +19.981, unit: 1, amount: +18.725, unit: 1, amount: +18.003, unit: 1, amount: +16.291, unit: 1, amount: +16.340, unit: 1, amount: +15.40, unit: 1, amount: +19.4668

Catalog code 2MASS J02194472+0045090, SDSS J021944.70+004509.0, SDSS J021944.70+004508.9, SDSS J021944.71+004509.0, Gaia DR2 2501145823682560768

Constellation Cetus

Declination unit: www.wikidata.org, amount: +0.75250248303270

Declination component of proper motion unit: www.wikidata.org, amount: +0.047

Distance from earth unit: www.wikidata.org, amount: +592.3

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +0.3530

Radial velocity unit: www.wikidata.org, amount: -39

Right ascension unit: www.wikidata.org, amount: +34.93627708514450

Right ascension component of proper motion unit: www.wikidata.org, amount: -10.013

Spectral class M4V

External References (2)

Gaia id 2501145823682560768

Simbad id 2MASS J02194472+0045090

References

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

Direct Wikidata claims

[2] ↑ Q81755621 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81755621 — constellation (P59): Cetus. wikidata.org.
[4] ↑ Q81755621 — spectral class (P215): M4V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81755621 — catalog code (P528): 2MASS J02194472+0045090. SIMBAD. wikidata.org.
[6] ↑ Q81755621 — catalog code (P528): SDSS J021944.70+004509.0. SIMBAD. wikidata.org.
[7] ↑ Q81755621 — catalog code (P528): SDSS J021944.70+004508.9. SIMBAD. wikidata.org.
[8] ↑ Q81755621 — catalog code (P528): SDSS J021944.71+004509.0. SIMBAD. wikidata.org.
[9] ↑ Q81755621 — catalog code (P528): Gaia DR2 2501145823682560768. SIMBAD. wikidata.org.
[10] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.679'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+21.398'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.981'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.725'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.003'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[15] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.291'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.340'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.40'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[18] ↑ Q81755621 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.4668'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81755621 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+0.3530'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q81755621 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-39'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81755621 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+592.3'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[22] ↑ Q81755621 — SIMBAD ID (P3083): 2MASS J02194472+0045090. wikidata.org.
[23] ↑ Q81755621 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+34.93627708514450'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81755621 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+0.75250248303270'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81755621 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81755621 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+0.047'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81755621 is an instance of low-mass star (Q12795622) [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). Q81755621. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81755621

MLA “Q81755621.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81755621.

BibTeX

@misc{4ortxyz_q81755621_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81755621}}, year = {2026}, url = {https://4ort.xyz/entity/q81755621}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81755621 — https://4ort.xyz/entity/q81755621 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81755621 · Last refreshed: May 7, 2026