Q81942442

low-mass star in the constellation Hydra

Thing low_mass_star Q81942442

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Q81942442

Summary

Q81942442 is a low-mass star^[1].

Key Facts

Q81942442's instance of is recorded as low-mass star^[2].
Q81942442's constellation is recorded as Hydra^[3].
Q81942442's spectral class is recorded as M2V^[4].
Q81942442's catalog code is recorded as 2MASS J09124856+0025315^[5].
Q81942442's catalog code is recorded as SDSS J091248.56+002531.7^[6].
Q81942442's catalog code is recorded as SDSS J091248.56+002531.8^[7].
Q81942442's catalog code is recorded as Gaia DR2 3843297887929439104^[8].
Q81942442's redshift is recorded as {'unit': '1', 'amount': '+0.00018'}^[9].
Q81942442's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.388'}^[10].
Q81942442's apparent magnitude is recorded as {'unit': '1', 'amount': '+21.046'}^[11].
Q81942442's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.650'}^[12].
Q81942442's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.752'}^[13].
Q81942442's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.361'}^[14].
Q81942442's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.495'}^[15].
Q81942442's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.960'}^[16].
Q81942442's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.4459'}^[17].
Q81942442's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+1.0123'}^[18].
Q81942442's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+38'}^[19].
Q81942442's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+1464.5'}^[20].
Q81942442's SIMBAD ID is recorded as 2MASS J09124856+0025315^[21].
Q81942442's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+138.20235782652010'}^[22].
Q81942442's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+0.42546769669470'}^[23].
Q81942442's epoch is recorded as J2000.0^[24].
Q81942442's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+1.981'}^[25].
Q81942442's right ascension component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-7.724'}^[26].

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Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +24.388, unit: 1, amount: +21.046, unit: 1, amount: +19.650, unit: 1, amount: +18.752, unit: 1, amount: +18.361, unit: 1, amount: +16.495, unit: 1, amount: +15.960, unit: 1, amount: +19.4459

Catalog code 2MASS J09124856+0025315, SDSS J091248.56+002531.7, SDSS J091248.56+002531.8, Gaia DR2 3843297887929439104

Constellation Hydra

Declination unit: www.wikidata.org, amount: +0.42546769669470

Declination component of proper motion unit: www.wikidata.org, amount: +1.981

Distance from earth unit: www.wikidata.org, amount: +1464.5

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +1.0123

Radial velocity unit: www.wikidata.org, amount: +38

Redshift unit: 1, amount: +0.00018

Right ascension unit: www.wikidata.org, amount: +138.20235782652010

Right ascension component of proper motion unit: www.wikidata.org, amount: -7.724

Spectral class M2V

External References (2)

Gaia id 3843297887929439104

Simbad id 2MASS J09124856+0025315

References

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

Direct Wikidata claims

[2] ↑ Q81942442 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81942442 — constellation (P59): Hydra. wikidata.org.
[4] ↑ Q81942442 — spectral class (P215): M2V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81942442 — catalog code (P528): 2MASS J09124856+0025315. SIMBAD. wikidata.org.
[6] ↑ Q81942442 — catalog code (P528): SDSS J091248.56+002531.7. SIMBAD. wikidata.org.
[7] ↑ Q81942442 — catalog code (P528): SDSS J091248.56+002531.8. SIMBAD. wikidata.org.
[8] ↑ Q81942442 — catalog code (P528): Gaia DR2 3843297887929439104. SIMBAD. wikidata.org.
[9] ↑ Q81942442 — redshift (P1090): {'unit': '1', 'amount': '+0.00018'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[10] ↑ Q81942442 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.388'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81942442 — apparent magnitude (P1215): {'unit': '1', 'amount': '+21.046'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81942442 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.650'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81942442 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.752'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q81942442 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.361'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[15] ↑ Q81942442 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.495'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81942442 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.960'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81942442 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.4459'}. Gaia Data Release 2. wikidata.org.
[18] ↑ Q81942442 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+1.0123'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81942442 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+38'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[20] ↑ Q81942442 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+1464.5'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81942442 — SIMBAD ID (P3083): 2MASS J09124856+0025315. wikidata.org.
[22] ↑ Q81942442 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+138.20235782652010'}. Gaia Data Release 2. wikidata.org.
[23] ↑ Q81942442 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+0.42546769669470'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81942442 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81942442 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+1.981'}. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81942442 — right ascension component of proper motion (P10752): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-7.724'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81942442 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). Q81942442. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81942442

MLA “Q81942442.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81942442.

BibTeX

@misc{4ortxyz_q81942442_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81942442}}, year = {2026}, url = {https://4ort.xyz/entity/q81942442}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81942442 — https://4ort.xyz/entity/q81942442 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81942442 · Last refreshed: May 7, 2026