Q81756312

low-mass star in the constellation Cetus

Thing low_mass_star Q81756312

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Q81756312

Summary

Q81756312 is a low-mass star^[1].

Key Facts

Q81756312's instance of is recorded as low-mass star^[2].
Q81756312's constellation is recorded as Cetus^[3].
Q81756312's spectral class is recorded as M4V^[4].
Q81756312's catalog code is recorded as 2MASS J00395660-0021318^[5].
Q81756312's catalog code is recorded as SDSS J003956.62-002131.6^[6].
Q81756312's catalog code is recorded as SDSS J003956.62-002131.8^[7].
Q81756312's catalog code is recorded as Gaia DR2 2542960835001849088^[8].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.895'}^[9].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+21.156'}^[10].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.596'}^[11].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.597'}^[12].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.178'}^[13].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.674'}^[14].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.260'}^[15].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.47'}^[16].
Q81756312's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.0727'}^[17].
Q81756312's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+1.8206'}^[18].
Q81756312's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-24'}^[19].
Q81756312's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+475.2'}^[20].
Q81756312's SIMBAD ID is recorded as 2MASS J00395660-0021318^[21].
Q81756312's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+9.98594361877630'}^[22].
Q81756312's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-0.35881685683420'}^[23].
Q81756312's epoch is recorded as J2000.0^[24].
Q81756312's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-2.216'}^[25].
Q81756312's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+4.969'}^[26].

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Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +24.895, unit: 1, amount: +21.156, unit: 1, amount: +19.596, unit: 1, amount: +17.597, unit: 1, amount: +16.178, unit: 1, amount: +15.674, unit: 1, amount: +18.260, unit: 1, amount: +15.47, unit: 1, amount: +19.0727

Catalog code 2MASS J00395660-0021318, SDSS J003956.62-002131.6, SDSS J003956.62-002131.8, Gaia DR2 2542960835001849088

Constellation Cetus

Declination unit: www.wikidata.org, amount: -0.35881685683420

Declination component of proper motion unit: www.wikidata.org, amount: -2.216

Distance from earth unit: www.wikidata.org, amount: +475.2

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +1.8206

Radial velocity unit: www.wikidata.org, amount: -24

Right ascension unit: www.wikidata.org, amount: +9.98594361877630

Right ascension component of proper motion unit: www.wikidata.org, amount: +4.969

Spectral class M4V

External References (2)

Gaia id 2542960835001849088

Simbad id 2MASS J00395660-0021318

References

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

Direct Wikidata claims

[2] ↑ Q81756312 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81756312 — constellation (P59): Cetus. wikidata.org.
[4] ↑ Q81756312 — spectral class (P215): M4V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81756312 — catalog code (P528): 2MASS J00395660-0021318. SIMBAD. wikidata.org.
[6] ↑ Q81756312 — catalog code (P528): SDSS J003956.62-002131.6. SIMBAD. wikidata.org.
[7] ↑ Q81756312 — catalog code (P528): SDSS J003956.62-002131.8. SIMBAD. wikidata.org.
[8] ↑ Q81756312 — catalog code (P528): Gaia DR2 2542960835001849088. SIMBAD. wikidata.org.
[9] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.895'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[10] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+21.156'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.596'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.597'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.178'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[14] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.674'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[15] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.260'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[16] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.47'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81756312 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.0727'}. Gaia Data Release 2. wikidata.org.
[18] ↑ Q81756312 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+1.8206'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81756312 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-24'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[20] ↑ Q81756312 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+475.2'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81756312 — SIMBAD ID (P3083): 2MASS J00395660-0021318. wikidata.org.
[22] ↑ Q81756312 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+9.98594361877630'}. Gaia Data Release 2. wikidata.org.
[23] ↑ Q81756312 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-0.35881685683420'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81756312 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81756312 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-2.216'}. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81756312 — right ascension component of proper motion (P10752): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+4.969'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81756312 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). Q81756312. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81756312

MLA “Q81756312.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81756312.

BibTeX

@misc{4ortxyz_q81756312_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81756312}}, year = {2026}, url = {https://4ort.xyz/entity/q81756312}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81756312 — https://4ort.xyz/entity/q81756312 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81756312 · Last refreshed: May 7, 2026