Q81938978

low-mass star in the constellation Hydra

Thing low_mass_star Q81938978

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Q81938978

Summary

Q81938978 is a low-mass star^[1].

Key Facts

Q81938978's instance of is recorded as low-mass star^[2].
Q81938978's constellation is recorded as Hydra^[3].
Q81938978's spectral class is recorded as M7V^[4].
Q81938978's catalog code is recorded as 2MASS J09101979+0349239^[5].
Q81938978's catalog code is recorded as SDSS J091019.80+034923.8^[6].
Q81938978's catalog code is recorded as SDSS J091019.81+034923.8^[7].
Q81938978's catalog code is recorded as Gaia DR2 579153937316632576^[8].
Q81938978's redshift is recorded as {'unit': '1', 'amount': '+0.00010'}^[9].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+23.839'}^[10].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+21.427'}^[11].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+20.030'}^[12].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.968'}^[13].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.295'}^[14].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.663'}^[15].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.379'}^[16].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.081'}^[17].
Q81938978's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.7909'}^[18].
Q81938978's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+5.6473'}^[19].
Q81938978's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+44'}^[20].
Q81938978's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+177.0758'}^[21].
Q81938978's SIMBAD ID is recorded as 2MASS J09101979+0349239^[22].
Q81938978's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+137.58252269983620'}^[23].
Q81938978's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+3.82329279619460'}^[24].
Q81938978's epoch is recorded as J2000.0^[25].
Q81938978's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-48.700'}^[26].

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Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +23.839, unit: 1, amount: +21.427, unit: 1, amount: +20.030, unit: 1, amount: +16.968, unit: 1, amount: +15.295, unit: 1, amount: +14.663, unit: 1, amount: +14.379, unit: 1, amount: +18.081, unit: 1, amount: +18.7909

Catalog code 2MASS J09101979+0349239, SDSS J091019.80+034923.8, SDSS J091019.81+034923.8, Gaia DR2 579153937316632576

Constellation Hydra

Declination unit: www.wikidata.org, amount: +3.82329279619460

Declination component of proper motion unit: www.wikidata.org, amount: -48.700

Distance from earth unit: www.wikidata.org, amount: +177.0758

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +5.6473

Radial velocity unit: www.wikidata.org, amount: +44

Redshift unit: 1, amount: +0.00010

Right ascension unit: www.wikidata.org, amount: +137.58252269983620

Right ascension component of proper motion unit: www.wikidata.org, amount: -28.306

Spectral class M7V

External References (2)

Gaia id 579153937316632576

Simbad id 2MASS J09101979+0349239

References

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

Direct Wikidata claims

[2] ↑ Q81938978 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81938978 — constellation (P59): Hydra. wikidata.org.
[4] ↑ Q81938978 — spectral class (P215): M7V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81938978 — catalog code (P528): 2MASS J09101979+0349239. SIMBAD. wikidata.org.
[6] ↑ Q81938978 — catalog code (P528): SDSS J091019.80+034923.8. SIMBAD. wikidata.org.
[7] ↑ Q81938978 — catalog code (P528): SDSS J091019.81+034923.8. SIMBAD. wikidata.org.
[8] ↑ Q81938978 — catalog code (P528): Gaia DR2 579153937316632576. SIMBAD. wikidata.org.
[9] ↑ Q81938978 — redshift (P1090): {'unit': '1', 'amount': '+0.00010'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[10] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+23.839'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+21.427'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+20.030'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.968'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.295'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[15] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.663'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.379'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.081'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[18] ↑ Q81938978 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.7909'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81938978 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+5.6473'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q81938978 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+44'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81938978 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+177.0758'}. Gaia Data Release 2. wikidata.org.
[22] ↑ Q81938978 — SIMBAD ID (P3083): 2MASS J09101979+0349239. wikidata.org.
[23] ↑ Q81938978 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+137.58252269983620'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81938978 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+3.82329279619460'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81938978 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81938978 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-48.700'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81938978 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). Q81938978. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81938978

MLA “Q81938978.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81938978.

BibTeX

@misc{4ortxyz_q81938978_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81938978}}, year = {2026}, url = {https://4ort.xyz/entity/q81938978}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81938978 — https://4ort.xyz/entity/q81938978 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81938978 · Last refreshed: May 7, 2026