Q81939419

low-mass star in the constellation Hydra

Thing low_mass_star Q81939419

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Q81939419

Summary

Q81939419 is a low-mass star^[1].

Key Facts

Q81939419's instance of is recorded as low-mass star^[2].
Q81939419's constellation is recorded as Hydra^[3].
Q81939419's spectral class is recorded as M7V^[4].
Q81939419's catalog code is recorded as 2MASS J08550450+0446562^[5].
Q81939419's catalog code is recorded as SDSS J085504.49+044656.3^[6].
Q81939419's catalog code is recorded as SDSS J085504.50+044656.4^[7].
Q81939419's catalog code is recorded as Gaia DR2 581762597375159936^[8].
Q81939419's redshift is recorded as {'unit': '1', 'amount': '-0.00006'}^[9].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.597'}^[10].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+23.090'}^[11].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+21.692'}^[12].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.339'}^[13].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.073'}^[14].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.338'}^[15].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.423'}^[16].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.31'}^[17].
Q81939419's apparent magnitude is recorded as {'unit': '1', 'amount': '+20.1107'}^[18].
Q81939419's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+5.6930'}^[19].
Q81939419's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+42'}^[20].
Q81939419's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+153.8'}^[21].
Q81939419's SIMBAD ID is recorded as 2MASS J08550450+0446562^[22].
Q81939419's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+133.76876448065170'}^[23].
Q81939419's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+4.78232925143910'}^[24].
Q81939419's epoch is recorded as J2000.0^[25].
Q81939419's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-8.540'}^[26].

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Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +24.597, unit: 1, amount: +23.090, unit: 1, amount: +21.692, unit: 1, amount: +19.339, unit: 1, amount: +18.073, unit: 1, amount: +16.338, unit: 1, amount: +15.423, unit: 1, amount: +15.31, unit: 1, amount: +20.1107

Catalog code 2MASS J08550450+0446562, SDSS J085504.49+044656.3, SDSS J085504.50+044656.4, Gaia DR2 581762597375159936

Constellation Hydra

Declination unit: www.wikidata.org, amount: +4.78232925143910

Declination component of proper motion unit: www.wikidata.org, amount: -8.540

Distance from earth unit: www.wikidata.org, amount: +153.8

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +5.6930

Radial velocity unit: www.wikidata.org, amount: +42

Redshift unit: 1, amount: -0.00006

Right ascension unit: www.wikidata.org, amount: +133.76876448065170

Right ascension component of proper motion unit: www.wikidata.org, amount: -24.554

Spectral class M7V

External References (2)

Gaia id 581762597375159936

Simbad id 2MASS J08550450+0446562

References

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

Direct Wikidata claims

[2] ↑ Q81939419 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81939419 — constellation (P59): Hydra. wikidata.org.
[4] ↑ Q81939419 — spectral class (P215): M7V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81939419 — catalog code (P528): 2MASS J08550450+0446562. SIMBAD. wikidata.org.
[6] ↑ Q81939419 — catalog code (P528): SDSS J085504.49+044656.3. SIMBAD. wikidata.org.
[7] ↑ Q81939419 — catalog code (P528): SDSS J085504.50+044656.4. SIMBAD. wikidata.org.
[8] ↑ Q81939419 — catalog code (P528): Gaia DR2 581762597375159936. SIMBAD. wikidata.org.
[9] ↑ Q81939419 — redshift (P1090): {'unit': '1', 'amount': '-0.00006'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[10] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.597'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+23.090'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+21.692'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.339'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.073'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[15] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.338'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.423'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.31'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[18] ↑ Q81939419 — apparent magnitude (P1215): {'unit': '1', 'amount': '+20.1107'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81939419 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+5.6930'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q81939419 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+42'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81939419 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+153.8'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[22] ↑ Q81939419 — SIMBAD ID (P3083): 2MASS J08550450+0446562. wikidata.org.
[23] ↑ Q81939419 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+133.76876448065170'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81939419 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+4.78232925143910'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81939419 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81939419 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-8.540'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81939419 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). Q81939419. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81939419

MLA “Q81939419.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81939419.

BibTeX

@misc{4ortxyz_q81939419_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81939419}}, year = {2026}, url = {https://4ort.xyz/entity/q81939419}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81939419 — https://4ort.xyz/entity/q81939419 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81939419 · Last refreshed: May 7, 2026