R Hydrae

variable star in the constellation Hydra
Place mira_variable Q2124823
R Hydrae
IR: NASA/JPL-Caltech/T. Ueta (U. of Denver); Artist Concept: NASA/JPL-Caltech/T. Pyle (SSC/Caltech) · Public Domain · Wikimedia
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R Hydrae

Summary

R Hydrae is a Mira variable[1]. It ranks in the top 9% of mira_variable entities by monthly Wikipedia readership (34 views/month).[2]

Key Facts

  • R Hydrae's instance of is recorded as Mira variable[3].
  • R Hydrae's instance of is recorded as optical double[4].
  • R Hydrae's instance of is recorded as astrophysical maser[5].
  • R Hydrae's instance of is recorded as double star[6].
  • R Hydrae's instance of is recorded as long-period variable star[7].
  • R Hydrae's instance of is recorded as near-infrared source[8].
  • R Hydrae's constellation is recorded as Hydra[9].
  • R Hydrae's spectral class is recorded as M6/7e[10].
  • R Hydrae's Commons category is recorded as R Hydrae[11].
  • R Hydrae comprises Q83754874[12].
  • R Hydrae's catalog code is recorded as GSC 06713-00024[13].
  • R Hydrae's catalog code is recorded as 2MASS J13294277-2316514[14].
  • R Hydrae's catalog code is recorded as HD 117287[15].
  • R Hydrae's catalog code is recorded as HIP 65835[16].
  • R Hydrae's catalog code is recorded as HR 5080[17].
  • R Hydrae's catalog code is recorded as SAO 181695[18].
  • R Hydrae's catalog code is recorded as IRAS 13269-2301[19].
  • R Hydrae's catalog code is recorded as ADS 8920 A[20].
  • R Hydrae's catalog code is recorded as CCDM J13297-2317A[21].
  • R Hydrae's catalog code is recorded as GC 18239[22].
  • R Hydrae's catalog code is recorded as GCRV 8006[23].
  • R Hydrae's catalog code is recorded as HIC 65835[24].
  • R Hydrae's catalog code is recorded as IDS 13242-2246 A[25].
  • R Hydrae's catalog code is recorded as IRC -20254[26].
  • R Hydrae's catalog code is recorded as JP11 2398[27].

Body

Designation and Status

Recorded instance of include Mira variable[3], optical double[4], astrophysical maser[5], double star[6], long-period variable star[7], and near-infrared source[8].

History and Context

Catalog codes include GSC 06713-00024[13], 2MASS J13294277-2316514[14], HD 117287[15], HIP 65835[16], HR 5080[17], and SAO 181695[18].

Why It Matters

R Hydrae ranks in the top 9% of mira_variable entities by monthly Wikipedia readership (34 views/month).[2] It has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.[28] It is known by 14 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [3] . General Catalogue of Variable Stars. wikidata.org.
  2. [4] . Washington Double Star Catalog. wikidata.org.
  3. [5] . SIMBAD. wikidata.org.
  4. [6] . SIMBAD. wikidata.org.
  5. [7] . SIMBAD. wikidata.org.
  6. [8] . SIMBAD. wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . Q66617557. wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . Washington Double Star Catalog. wikidata.org.
  11. [13] . SIMBAD. wikidata.org.
  12. [14] . SIMBAD. wikidata.org.
  13. [15] . SIMBAD. wikidata.org.
  14. [16] . SIMBAD. wikidata.org.
  15. [17] . SIMBAD. wikidata.org.
  16. [18] . SIMBAD. wikidata.org.
  17. [19] . SIMBAD. wikidata.org.
  18. [20] . SIMBAD. wikidata.org.
  19. [21] . SIMBAD. wikidata.org.
  20. [22] . SIMBAD. wikidata.org.
  21. [23] . SIMBAD. wikidata.org.
  22. [24] . SIMBAD. wikidata.org.
  23. [25] . SIMBAD. wikidata.org.
  24. [26] . SIMBAD. wikidata.org.
  25. [27] . SIMBAD. wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . Wikidata aliases. 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). R Hydrae. Retrieved May 3, 2026, from https://4ort.xyz/entity/r-hydrae
MLA “R Hydrae.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/r-hydrae.
BibTeX @misc{4ortxyz_r-hydrae_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{R Hydrae}}, year = {2026}, url = {https://4ort.xyz/entity/r-hydrae}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): R Hydrae — https://4ort.xyz/entity/r-hydrae (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/r-hydrae · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 8w ago · 惑星矮星 · 2026-06-22 view diff on Wikidata ↗
    Right ascension {'unit': 'Q28390', 'amount': '+202.42825066102745'}
    Parallax {'unit': 'Q21500224', 'amount': '+6.7355'}
    Has parts
    Instance of Mira variable, optical double, astrophysical maser +3
    + 15 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1 */ [[Property:P31]]: [[Q744691]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.