EM Hydrae

RR Lyrae variable star in the constellation Hydra
Place rr_lyrae_variable Q93384312
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EM Hydrae

Summary

EM Hydrae is a RR Lyrae variable[1].

Key Facts

  • EM Hydrae's instance of is recorded as RR Lyrae variable[2].
  • EM Hydrae's instance of is recorded as near-infrared source[3].
  • EM Hydrae's constellation is recorded as Hydra[4].
  • EM Hydrae's catalog code is recorded as ASAS J123540-2639.7[5].
  • EM Hydrae's catalog code is recorded as 2MASS J12353996-2639414[6].
  • EM Hydrae's catalog code is recorded as CRTS J123539.9-263942[7].
  • EM Hydrae's catalog code is recorded as Gaia DR2 3499342510135903360[8].
  • EM Hydrae's catalog code is recorded as EM Hya[9].
  • EM Hydrae's catalog code is recorded as Gaia DR3 3499342510135903360[10].
  • EM Hydrae's catalog code is recorded as TIC 60641868[11].
  • EM Hydrae's catalog code is recorded as WISEA J123539.95-263941.3[12].
  • EM Hydrae's type of variable star is recorded as RR Lyrae variable with asymmetric light curves[13].
  • EM Hydrae's apparent magnitude is recorded as {'unit': '1', 'amount': '+13.13'}[14].
  • EM Hydrae's apparent magnitude is recorded as {'unit': '1', 'amount': '+11.942'}[15].
  • EM Hydrae's apparent magnitude is recorded as {'unit': '1', 'amount': '+11.723'}[16].
  • EM Hydrae's apparent magnitude is recorded as {'unit': '1', 'amount': '+11.639'}[17].
  • EM Hydrae's apparent magnitude is recorded as {'unit': '1', 'amount': '+12.910876'}[18].
  • EM Hydrae's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+0.345'}[19].
  • EM Hydrae's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+116.99'}[20].
  • EM Hydrae's distance from Earth is recorded as {'unit': 'http://www.wikidata.org/entity/Q12129', 'amount': '+2219.2986'}[21].
  • EM Hydrae's SIMBAD ID is recorded as V* EM Hya[22].
  • EM Hydrae's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+188.91653899361'}[23].
  • EM Hydrae's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-26.66151040225'}[24].
  • EM Hydrae's epoch is recorded as J2000.0[25].
  • EM Hydrae's declination component of proper motion is recorded as {'unit': 'http://www.wikidata.org/entity/Q22137107', 'amount': '+5.564'}[26].

Body

Designation and Status

Recorded instance of include RR Lyrae variable[2] and near-infrared source[3].

History and Context

Catalog codes include ASAS J123540-2639.7[5], 2MASS J12353996-2639414[6], CRTS J123539.9-263942[7], Gaia DR2 3499342510135903360[8], EM Hya[9], and Gaia DR3 3499342510135903360[10].

References

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

Direct Wikidata claims

  1. [2] . SIMBAD. wikidata.org.
  2. [3] . SIMBAD. wikidata.org.
  3. [4] . wikidata.org.
  4. [5] . SIMBAD. wikidata.org.
  5. [6] . SIMBAD. wikidata.org.
  6. [7] . SIMBAD. wikidata.org.
  7. [8] . SIMBAD. wikidata.org.
  8. [9] . SIMBAD. wikidata.org.
  9. [10] . SIMBAD. wikidata.org.
  10. [11] . SIMBAD. wikidata.org.
  11. [12] . Gaia Data Release 3. wikidata.org.
  12. [13] . Discovery of ~9,000 new RR Lyrae in the southern Catalina surveys. wikidata.org.
  13. [14] . Analysis of RR Lyrae Stars in the Northern Sky Variability Survey. wikidata.org.
  14. [15] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  15. [16] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  16. [17] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  17. [18] . Gaia Early Data Release 3. wikidata.org.
  18. [19] . Gaia Early Data Release 3. wikidata.org.
  19. [20] . Gaia Data Release 3. wikidata.org.
  20. [21] . Gaia Data Release 3. wikidata.org.
  21. [22] . wikidata.org.
  22. [23] . Gaia Early Data Release 3. wikidata.org.
  23. [24] . Gaia Early Data Release 3. wikidata.org.
  24. [25] . Gaia Data Release 2. wikidata.org.
  25. [26] . Gaia Early Data Release 3. wikidata.org.

Class ancestry

  1. [1] . 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). EM Hydrae. Retrieved May 3, 2026, from https://4ort.xyz/entity/em-hydrae
MLA “EM Hydrae.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/em-hydrae.
BibTeX @misc{4ortxyz_em-hydrae_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{EM Hydrae}}, year = {2026}, url = {https://4ort.xyz/entity/em-hydrae}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): EM Hydrae — https://4ort.xyz/entity/em-hydrae (retrieved 2026-05-03)

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