OS Hydrae

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OS Hydrae

Summary

OS Hydrae is a long-period variable star^[1].

Key Facts

OS Hydrae's instance of is recorded as long-period variable star^[2].
OS Hydrae's instance of is recorded as infrared source^[3].
OS Hydrae's instance of is recorded as near-infrared source^[4].
OS Hydrae's instance of is recorded as astrophysical X-ray source^[5].
OS Hydrae's constellation is recorded as Hydra^[6].
OS Hydrae's spectral class is recorded as K0III^[7].
OS Hydrae's catalog code is recorded as HIP 46987^[8].
OS Hydrae's catalog code is recorded as Gaia DR3 3839802093787945856^[9].
OS Hydrae's catalog code is recorded as RAVE J093436.5-002913^[10].
OS Hydrae's catalog code is recorded as TIC 123225199^[11].
OS Hydrae's catalog code is recorded as AAVSO 0929-00^[12].
OS Hydrae's catalog code is recorded as BD+00 2531^[13].
OS Hydrae's catalog code is recorded as GSC 04894-00427^[14].
OS Hydrae's catalog code is recorded as HD 82841^[15].
OS Hydrae's catalog code is recorded as HIC 46987^[16].
OS Hydrae's catalog code is recorded as IRAS 09320-0015^[17].
OS Hydrae's catalog code is recorded as PPM 177907^[18].
OS Hydrae's catalog code is recorded as SAO 136965^[19].
OS Hydrae's catalog code is recorded as SRS 9121^[20].
OS Hydrae's catalog code is recorded as TYC 4894-427-1^[21].
OS Hydrae's catalog code is recorded as OS Hya^[22].
OS Hydrae's catalog code is recorded as YZ 90 2891^[23].
OS Hydrae's catalog code is recorded as 2MASS J09343646-0029140^[24].
OS Hydrae's catalog code is recorded as 1RXS J093436.1-002906^[25].
OS Hydrae's catalog code is recorded as SDSS J093436.46-002914.2^[26].

Body

Designation and Status

Recorded instance of include long-period variable star^[2], infrared source^[3], near-infrared source^[4], and astrophysical X-ray source^[5].

History and Context

Catalog codes include HIP 46987^[8], Gaia DR3 3839802093787945856^[9], RAVE J093436.5-002913^[10], TIC 123225199^[11], AAVSO 0929-00^[12], and BD+00 2531^[13].

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Quick Facts

Instance of long-period variable star, infrared source, near-infrared source, astrophysical X-ray source

Properties

Apparent magnitude unit: 1, amount: +7.991544, unit: 1, amount: +7.956, unit: 1, amount: +10.933, unit: 1, amount: +11.932, unit: 1, amount: +12.862, unit: 1, amount: +11.464, unit: 1, amount: +9.53, unit: 1, amount: +6.376, unit: 1, amount: +5.818, unit: 1, amount: +5.642, unit: 1, amount: +7.175, unit: 1, amount: +8.311

Catalog code HIP 46987, Gaia DR3 3839802093787945856, RAVE J093436.5-002913, TIC 123225199, AAVSO 0929-00, BD+00 2531, GSC 04894-00427, HD 82841, HIC 46987, IRAS 09320-0015, PPM 177907, SAO 136965, SRS 9121, TYC 4894-427-1, OS Hya, YZ 90 2891, 2MASS J09343646-0029140, 1RXS J093436.1-002906, SDSS J093436.46-002914.2, ASAS J093436-0029.1, RAVE J093436.5-002914, Gaia DR1 3839802089492952448, Gaia DR2 3839802093787945856, AG-00 1405, AGKR 8619, WISEA J093436.46-002914.2, DENIS J093436.4-002913

Constellation Hydra

Declination unit: www.wikidata.org, amount: -0.48724458173

Declination component of proper motion unit: www.wikidata.org, amount: -20.525

Distance from earth unit: www.wikidata.org, amount: +279.187, unit: www.wikidata.org, amount: +283.9403

Effective temperature unit: www.wikidata.org, amount: +4683

Epoch J2000.0

Imported from wholeness_audit_2026-05-02

Metallicity unit: 1, amount: +0.015

Parallax unit: www.wikidata.org, amount: +3.2882

Radial velocity unit: www.wikidata.org, amount: +21.99

Right ascension unit: www.wikidata.org, amount: +143.65195611502

Right ascension component of proper motion unit: www.wikidata.org, amount: -9.059

Spectral class K0III

Surface gravity unit: www.wikidata.org, amount: +794

Type of variable star rotating variable star

External References (2)

Gaia id 3839802093787945856

Simbad id V* OS Hya

🏷️ Also known as

en OS Hydrae ru OS Гидры

References

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

Direct Wikidata claims

[2] ↑ OS Hydrae — instance of (P31): long-period variable star. SIMBAD. wikidata.org.
[3] ↑ OS Hydrae — instance of (P31): infrared source. SIMBAD. wikidata.org.
[4] ↑ OS Hydrae — instance of (P31): near-infrared source. SIMBAD. wikidata.org.
[5] ↑ OS Hydrae — instance of (P31): astrophysical X-ray source. SIMBAD. wikidata.org.
[6] ↑ OS Hydrae — constellation (P59): Hydra. wikidata.org.
[7] ↑ OS Hydrae — spectral class (P215): K0III. Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5. wikidata.org.
[8] ↑ OS Hydrae — catalog code (P528): HIP 46987. SIMBAD. wikidata.org.
[9] ↑ OS Hydrae — catalog code (P528): Gaia DR3 3839802093787945856. SIMBAD. wikidata.org.
[10] ↑ OS Hydrae — catalog code (P528): RAVE J093436.5-002913. SIMBAD. wikidata.org.
[11] ↑ OS Hydrae — catalog code (P528): TIC 123225199. SIMBAD. wikidata.org.
[12] ↑ OS Hydrae — catalog code (P528): AAVSO 0929-00. SIMBAD. wikidata.org.
[13] ↑ OS Hydrae — catalog code (P528): BD+00 2531. SIMBAD. wikidata.org.
[14] ↑ OS Hydrae — catalog code (P528): GSC 04894-00427. SIMBAD. wikidata.org.
[15] ↑ OS Hydrae — catalog code (P528): HD 82841. SIMBAD. wikidata.org.
[16] ↑ OS Hydrae — catalog code (P528): HIC 46987. SIMBAD. wikidata.org.
[17] ↑ OS Hydrae — catalog code (P528): IRAS 09320-0015. SIMBAD. wikidata.org.
[18] ↑ OS Hydrae — catalog code (P528): PPM 177907. SIMBAD. wikidata.org.
[19] ↑ OS Hydrae — catalog code (P528): SAO 136965. SIMBAD. wikidata.org.
[20] ↑ OS Hydrae — catalog code (P528): SRS 9121. SIMBAD. wikidata.org.
[21] ↑ OS Hydrae — catalog code (P528): TYC 4894-427-1. SIMBAD. wikidata.org.
[22] ↑ OS Hydrae — catalog code (P528): OS Hya. SIMBAD. wikidata.org.
[23] ↑ OS Hydrae — catalog code (P528): YZ 90 2891. SIMBAD. wikidata.org.
[24] ↑ OS Hydrae — catalog code (P528): 2MASS J09343646-0029140. SIMBAD. wikidata.org.
[25] ↑ OS Hydrae — catalog code (P528): 1RXS J093436.1-002906. SIMBAD. wikidata.org.
[26] ↑ OS Hydrae — catalog code (P528): SDSS J093436.46-002914.2. SIMBAD. wikidata.org.

Class ancestry

[1] ↑ OS Hydrae is an instance of long-period variable star (Q1153690) [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). OS Hydrae. Retrieved May 3, 2026, from https://4ort.xyz/entity/os-hydrae

MLA “OS Hydrae.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/os-hydrae.

BibTeX

@misc{4ortxyz_os-hydrae_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{OS Hydrae}}, year = {2026}, url = {https://4ort.xyz/entity/os-hydrae}, note = {Accessed: 2026-05-03}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): OS Hydrae — https://4ort.xyz/entity/os-hydrae (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/os-hydrae · Last refreshed: May 3, 2026