Q81757824

low-mass star in the constellation Cetus

Thing low_mass_star Q81757824

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Q81757824

Summary

Q81757824 is a low-mass star^[1].

Key Facts

Q81757824's instance of is recorded as low-mass star^[2].
Q81757824's constellation is recorded as Cetus^[3].
Q81757824's spectral class is recorded as M4V^[4].
Q81757824's catalog code is recorded as 2MASS J00394873+0030597^[5].
Q81757824's catalog code is recorded as SDSS J003948.72+003100.0^[6].
Q81757824's catalog code is recorded as Gaia DR2 2543321303016914816^[7].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+23.620'}^[8].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+21.015'}^[9].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.567'}^[10].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.503'}^[11].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.051'}^[12].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.204'}^[13].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.444'}^[14].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.224'}^[15].
Q81757824's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.9945'}^[16].
Q81757824's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.0196'}^[17].
Q81757824's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+40'}^[18].
Q81757824's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+430.8'}^[19].
Q81757824's SIMBAD ID is recorded as 2MASS J00394873+0030597^[20].
Q81757824's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+9.95302915572800'}^[21].
Q81757824's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+0.51665107018450'}^[22].
Q81757824's epoch is recorded as J2000.0^[23].
Q81757824's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-1.555'}^[24].
Q81757824's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+22.373'}^[25].
Q81757824's Gaia ID is recorded as 2543321303016914816^[26].

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Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +23.620, unit: 1, amount: +21.015, unit: 1, amount: +19.567, unit: 1, amount: +17.503, unit: 1, amount: +16.051, unit: 1, amount: +18.204, unit: 1, amount: +15.444, unit: 1, amount: +15.224, unit: 1, amount: +18.9945

Catalog code 2MASS J00394873+0030597, SDSS J003948.72+003100.0, Gaia DR2 2543321303016914816

Constellation Cetus

Declination unit: www.wikidata.org, amount: +0.51665107018450

Declination component of proper motion unit: www.wikidata.org, amount: -1.555

Distance from earth unit: www.wikidata.org, amount: +430.8

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +2.0196

Radial velocity unit: www.wikidata.org, amount: +40

Right ascension unit: www.wikidata.org, amount: +9.95302915572800

Right ascension component of proper motion unit: www.wikidata.org, amount: +22.373

Spectral class M4V

External References (2)

Gaia id 2543321303016914816

Simbad id 2MASS J00394873+0030597

References

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

Direct Wikidata claims

[2] ↑ Q81757824 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81757824 — constellation (P59): Cetus. wikidata.org.
[4] ↑ Q81757824 — spectral class (P215): M4V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81757824 — catalog code (P528): 2MASS J00394873+0030597. SIMBAD. wikidata.org.
[6] ↑ Q81757824 — catalog code (P528): SDSS J003948.72+003100.0. SIMBAD. wikidata.org.
[7] ↑ Q81757824 — catalog code (P528): Gaia DR2 2543321303016914816. SIMBAD. wikidata.org.
[8] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+23.620'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[9] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+21.015'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[10] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.567'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.503'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.051'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[13] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.204'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[14] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.444'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[15] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.224'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81757824 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.9945'}. Gaia Data Release 2. wikidata.org.
[17] ↑ Q81757824 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.0196'}. Gaia Data Release 2. wikidata.org.
[18] ↑ Q81757824 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+40'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[19] ↑ Q81757824 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+430.8'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[20] ↑ Q81757824 — SIMBAD ID (P3083): 2MASS J00394873+0030597. wikidata.org.
[21] ↑ Q81757824 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+9.95302915572800'}. Gaia Data Release 2. wikidata.org.
[22] ↑ Q81757824 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+0.51665107018450'}. Gaia Data Release 2. wikidata.org.
[23] ↑ Q81757824 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81757824 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-1.555'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81757824 — right ascension component of proper motion (P10752): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+22.373'}. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81757824 — Gaia ID (P13228): 2543321303016914816. wikidata.org.

Class ancestry

[1] ↑ Q81757824 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). Q81757824. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81757824

MLA “Q81757824.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81757824.

BibTeX

@misc{4ortxyz_q81757824_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81757824}}, year = {2026}, url = {https://4ort.xyz/entity/q81757824}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81757824 — https://4ort.xyz/entity/q81757824 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81757824 · Last refreshed: May 7, 2026