Q81940173

low-mass star in the constellation Hydra

Thing low_mass_star Q81940173

Press Enter · cited answer in seconds

Q81940173

Summary

Q81940173 is a low-mass star^[1].

Key Facts

Q81940173's instance of is recorded as low-mass star^[2].
Q81940173's constellation is recorded as Hydra^[3].
Q81940173's spectral class is recorded as M2V^[4].
Q81940173's catalog code is recorded as SDSS J081637.54+041131.7^[5].
Q81940173's catalog code is recorded as 2MASS J08163745+0411360^[6].
Q81940173's catalog code is recorded as SDSS J081637.54+041131.9^[7].
Q81940173's catalog code is recorded as Gaia DR2 3091630331404275456^[8].
Q81940173's redshift is recorded as {'unit': '1', 'amount': '+0.00019'}^[9].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+24.805'}^[10].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+22.558'}^[11].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+20.617'}^[12].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+19.269'}^[13].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+18.664'}^[14].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.087'}^[15].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+13.815'}^[16].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+13.731'}^[17].
Q81940173's apparent magnitude is recorded as {'unit': '1', 'amount': '+20.0137'}^[18].
Q81940173's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.4565'}^[19].
Q81940173's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+94'}^[20].
Q81940173's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+853.7'}^[21].
Q81940173's SIMBAD ID is recorded as 2MASS J08163745+0411360^[22].
Q81940173's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+124.15642046781040'}^[23].
Q81940173's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+4.19217329580640'}^[24].
Q81940173's epoch is recorded as J2000.0^[25].
Q81940173's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-2.612'}^[26].

⭐ Popularity Graph

0/100 long tail

Quick Facts

Instance of low-mass star

Properties

Apparent magnitude unit: 1, amount: +24.805, unit: 1, amount: +22.558, unit: 1, amount: +20.617, unit: 1, amount: +19.269, unit: 1, amount: +18.664, unit: 1, amount: +14.087, unit: 1, amount: +13.815, unit: 1, amount: +13.731, unit: 1, amount: +20.0137

Catalog code SDSS J081637.54+041131.7, 2MASS J08163745+0411360, SDSS J081637.54+041131.9, Gaia DR2 3091630331404275456

Constellation Hydra

Declination unit: www.wikidata.org, amount: +4.19217329580640

Declination component of proper motion unit: www.wikidata.org, amount: -2.612

Distance from earth unit: www.wikidata.org, amount: +853.7

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +2.4565

Radial velocity unit: www.wikidata.org, amount: +94

Redshift unit: 1, amount: +0.00019

Right ascension unit: www.wikidata.org, amount: +124.15642046781040

Right ascension component of proper motion unit: www.wikidata.org, amount: +10.960

Spectral class M2V

External References (2)

Gaia id 3091630331404275456

Simbad id 2MASS J08163745+0411360

References

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

Direct Wikidata claims

[2] ↑ Q81940173 — instance of (P31): low-mass star. SIMBAD. wikidata.org.
[3] ↑ Q81940173 — constellation (P59): Hydra. wikidata.org.
[4] ↑ Q81940173 — spectral class (P215): M2V. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[5] ↑ Q81940173 — catalog code (P528): SDSS J081637.54+041131.7. SIMBAD. wikidata.org.
[6] ↑ Q81940173 — catalog code (P528): 2MASS J08163745+0411360. SIMBAD. wikidata.org.
[7] ↑ Q81940173 — catalog code (P528): SDSS J081637.54+041131.9. SIMBAD. wikidata.org.
[8] ↑ Q81940173 — catalog code (P528): Gaia DR2 3091630331404275456. SIMBAD. wikidata.org.
[9] ↑ Q81940173 — redshift (P1090): {'unit': '1', 'amount': '+0.00019'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[10] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+24.805'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[11] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+22.558'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[12] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+20.617'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[13] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+19.269'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[14] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+18.664'}. The Sixth Data Release of the Sloan Digital Sky Survey. wikidata.org.
[15] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.087'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+13.815'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+13.731'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[18] ↑ Q81940173 — apparent magnitude (P1215): {'unit': '1', 'amount': '+20.0137'}. Gaia Data Release 2. wikidata.org.
[19] ↑ Q81940173 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+2.4565'}. Gaia Data Release 2. wikidata.org.
[20] ↑ Q81940173 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+94'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[21] ↑ Q81940173 — distance from Earth (P2583): {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+853.7'}. The Sloan Digital Sky Survey Data Release 7 spectroscopic M dwarf catalog. I. Data. wikidata.org.
[22] ↑ Q81940173 — SIMBAD ID (P3083): 2MASS J08163745+0411360. wikidata.org.
[23] ↑ Q81940173 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+124.15642046781040'}. Gaia Data Release 2. wikidata.org.
[24] ↑ Q81940173 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+4.19217329580640'}. Gaia Data Release 2. wikidata.org.
[25] ↑ Q81940173 — epoch (P6259): J2000.0. Gaia Data Release 2. wikidata.org.
[26] ↑ Q81940173 — declination component of proper motion (P10751): {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '-2.612'}. Gaia Data Release 2. wikidata.org.

Class ancestry

[1] ↑ Q81940173 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). Q81940173. Retrieved May 7, 2026, from https://4ort.xyz/entity/q81940173

MLA “Q81940173.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q81940173.

BibTeX

@misc{4ortxyz_q81940173_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Q81940173}}, year = {2026}, url = {https://4ort.xyz/entity/q81940173}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Q81940173 — https://4ort.xyz/entity/q81940173 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q81940173 · Last refreshed: May 7, 2026