Q81942740

low-mass star in the constellation Hydra

Thing low_mass_star Q81942740

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Q81942740

Summary

Q81942740 is a low-mass star^[1].

Key Facts

Q81942740's instance of is recorded as low-mass star^[2].
Q81942740's constellation is recorded as Hydra^[3].
Q81942740's spectral class is recorded as M2V^[4].
Q81942740's catalog code is recorded as 2MASS J09083513+0201531^[5].
Q81942740's catalog code is recorded as SDSS J090835.17+020153.0^[6].
Q81942740's catalog code is recorded as SDSS J090835.16+020153.1^[7].
Q81942740's catalog code is recorded as Gaia DR2 577172067607209600^[8].
Q81942740's redshift is recorded as {'unit': '1', 'amount': '-0.00003'}^[9].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+21.476'}^[10].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.632'}^[11].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.119'}^[12].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.248'}^[13].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.663'}^[14].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.640'}^[15].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.088'}^[16].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.674'}^[17].
Q81942740's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.0333'}^[18].
Q81942740's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+3.5844'}^[19].
Q81942740's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+27'}^[20].
Q81942740's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+611.6'}^[21].
Q81942740's SIMBAD ID is recorded as 2MASS J09083513+0201531^[22].
Q81942740's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+137.14633179911990'}^[23].
Q81942740's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+2.03149792555310'}^[24].
Q81942740's epoch is recorded as J2000.0^[25].
Q81942740's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+3.441'}^[26].

⭐ Popularity Graph

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Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +21.476, unit: 1, amount: +19.632, unit: 1, amount: +18.119, unit: 1, amount: +17.248, unit: 1, amount: +16.663, unit: 1, amount: +15.640, unit: 1, amount: +15.088, unit: 1, amount: +14.674, unit: 1, amount: +19.0333

Catalog code 2MASS J09083513+0201531, SDSS J090835.17+020153.0, SDSS J090835.16+020153.1, Gaia DR2 577172067607209600

Constellation Hydra

Declination unit: www.wikidata.org, amount: +2.03149792555310

Declination component of proper motion unit: www.wikidata.org, amount: +3.441

Distance from earth unit: www.wikidata.org, amount: +611.6

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +3.5844

Radial velocity unit: www.wikidata.org, amount: +27

Redshift unit: 1, amount: -0.00003

Right ascension unit: www.wikidata.org, amount: +137.14633179911990

Right ascension component of proper motion unit: www.wikidata.org, amount: +20.412

Spectral class M2V

External References (2)

Gaia id 577172067607209600

Simbad id 2MASS J09083513+0201531

References

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

Direct Wikidata claims

[2] ↑ Q81942740 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81942740 — constellation (P59): Hydra. wikidata.org.
[4] ↑ Q81942740 — spectral class (P215): M2V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81942740 — catalog code (P528): 2MASS J09083513+0201531. SIMBAD. wikidata.org.
[6] ↑ Q81942740 — catalog code (P528): SDSS J090835.17+020153.0. SIMBAD. wikidata.org.
[7] ↑ Q81942740 — catalog code (P528): SDSS J090835.16+020153.1. SIMBAD. wikidata.org.
[8] ↑ Q81942740 — catalog code (P528): Gaia DR2 577172067607209600. SIMBAD. wikidata.org.
[9] ↑ Q81942740 — redshift (P1090): {'unit': '1', 'amount': '-0.00003'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[10] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+21.476'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.632'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.119'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.248'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.663'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[15] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.640'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.088'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.674'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[18] ↑ Q81942740 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.0333'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81942740 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+3.5844'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q81942740 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+27'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81942740 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+611.6'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[22] ↑ Q81942740 — SIMBAD ID (P3083): 2MASS J09083513+0201531. wikidata.org.
[23] ↑ Q81942740 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+137.14633179911990'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81942740 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+2.03149792555310'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81942740 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81942740 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+3.441'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81942740 is an instance of low-mass star (Q12795622) [P31, primary]. Wikidata. wikidata.org.

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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). Q81942740. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81942740

MLA “Q81942740.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81942740.

BibTeX

@misc{4ortxyz_q81942740_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81942740}}, year = {2026}, url = {https://4ort.xyz/entity/q81942740}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81942740 — https://4ort.xyz/entity/q81942740 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81942740 · Last refreshed: May 7, 2026