Eta Hydrae

variable star in the constellation Hydra
Place star Q1028333
Press Enter · cited answer in seconds

Eta Hydrae

Summary

Eta Hydrae is a star[1]. It ranks in the top 6% of star entities by monthly Wikipedia readership (3 views/month).[2]

Key Facts

  • Eta Hydrae's instance of is recorded as star[3].
  • Eta Hydrae's instance of is recorded as near-infrared source[4].
  • Eta Hydrae's instance of is recorded as ultraviolet source[5].
  • Eta Hydrae's constellation is recorded as Hydra[6].
  • Eta Hydrae's spectral class is recorded as B3V[7].
  • Eta Hydrae's catalog code is recorded as HD 74280[8].
  • Eta Hydrae's catalog code is recorded as HIP 42799[9].
  • Eta Hydrae's catalog code is recorded as SAO 117050[10].
  • Eta Hydrae's catalog code is recorded as HR 3454[11].
  • Eta Hydrae's catalog code is recorded as IRAS 08406+0334[12].
  • Eta Hydrae's catalog code is recorded as 2MASS J08431347+0323552[13].
  • Eta Hydrae's catalog code is recorded as GSC 00215-02021[14].
  • Eta Hydrae's catalog code is recorded as η Hya[15].
  • Eta Hydrae's catalog code is recorded as BD+03 2039[16].
  • Eta Hydrae's catalog code is recorded as CSV 100996[17].
  • Eta Hydrae's catalog code is recorded as FK5 2687[18].
  • Eta Hydrae's catalog code is recorded as GC 11987[19].
  • Eta Hydrae's catalog code is recorded as GCRV 5754[20].
  • Eta Hydrae's catalog code is recorded as HIC 42799[21].
  • Eta Hydrae's catalog code is recorded as JP11 1702[22].
  • Eta Hydrae's catalog code is recorded as N30 2036[23].
  • Eta Hydrae's catalog code is recorded as NSV 4212[24].
  • Eta Hydrae's catalog code is recorded as PPM 154889[25].
  • Eta Hydrae's catalog code is recorded as ROT 1369[26].
  • Eta Hydrae's catalog code is recorded as TD1 12946[27].

Body

Designation and Status

Recorded instance of include star[3], near-infrared source[4], and ultraviolet source[5].

History and Context

Catalog codes include HD 74280[8], HIP 42799[9], SAO 117050[10], HR 3454[11], IRAS 08406+0334[12], and 2MASS J08431347+0323552[13].

Why It Matters

Eta Hydrae ranks in the top 6% of star entities by monthly Wikipedia readership (3 views/month).[2] It has Wikipedia articles in 8 language editions, a strong signal of global cultural recognition.[28] It is known by 23 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] . SIMBAD. wikidata.org.
  2. [4] . SIMBAD. wikidata.org.
  3. [5] . SIMBAD. wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . Spectroscopic analysis of southern B and Be stars. wikidata.org.
  6. [8] . SIMBAD. wikidata.org.
  7. [9] . SIMBAD. wikidata.org.
  8. [10] . SIMBAD. wikidata.org.
  9. [11] . SIMBAD. wikidata.org.
  10. [12] . SIMBAD. wikidata.org.
  11. [13] . SIMBAD. wikidata.org.
  12. [14] . SIMBAD. wikidata.org.
  13. [15] . 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). Eta Hydrae. Retrieved May 3, 2026, from https://4ort.xyz/entity/eta-hydrae
MLA “Eta Hydrae.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/eta-hydrae.
BibTeX @misc{4ortxyz_eta-hydrae_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Eta Hydrae}}, year = {2026}, url = {https://4ort.xyz/entity/eta-hydrae}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Eta Hydrae — https://4ort.xyz/entity/eta-hydrae (retrieved 2026-05-03)

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