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Hydrus

Hydrus /ˈhaɪdrəs/ is a small constellation in the deep southern sky. It was one of twelve constellations created by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman and it first appeared on a 35-cm (14 in) diameter celestial globe published in late 1597 (or early 1598) in Amsterdam by Plancius and Jodocus Hondius.…

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Characters & History

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Key facts & relationships

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Abbreviation
Hyi
Area
243 sq. deg. (61st)
Bayer/Flamsteed stars
19
Bordering constellations
Dorado Eridanus Horologium Mensa Octans Phoenix (corner) Reticulum Tucana
Brightest star
β Hyi (2.82m)
Declination
−57.85°–−82.06°

Topics to explore

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Overview

History

Characteristics

Features

Advanced semantic analysis

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Map overview Semantic statistics

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Hydrus

Nodes104
Edges103
Triples127
Avg. degree1.98
Density0.019231
Components1

How this topic connects Entity context

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Hydrus

Top relations

related to Stars · 31
Hydrus → Alpha, Alpha Hydri, As, Bayer, Beta Hydri, Earth, Eta, G2 IV, Gamma, He, Horologium, Houtman, It, IV, Keyzer, Lacaille, Madagascan, Malay, Mensa, Of
related to Characteristics · 26
Hydrus → Antarctic Skies, Argo Navis, As, Belgian, Beta Hydri, Covering, Eridanus, Eugène Delporte, Herman Melville, Horologium, Hyi, In, International Astronomical Union, Irregular, Lacaille, Mensa, Moby Dick, Northern Hemisphere, Octans, October
related to history · 26
Hydrus → Amsterdam, Atlas Céleste, Coelum Australe Stelliferum, De Houtman, De Waterslang, Dutch, East Indies, Eerste Schipvaart, Frederick, German, Houtman, Hydra, Hydre Mâle, It, Jean Fortin, Jodocus Hondius, Johann Bayer's Uranometria, Lacaille, Lacaille Latinised, Nicolas Louis
related to Deep-sky objects · 22
Hydrus → Danish, Dorado, Dreyer, Earth, HD, IC, It, John Louis Emil Dreyer, Large Magellanic Cloud, Located, Milky Way, Most, NGC, PGC, RR Lyrae-type, Small Magellanic Cloud, Solar System, The, Tucana, Two
related to External links · 4
Hydrus → Chandra, Constellations, HydrusThe, HydrusThe Deep Photographic Guide
Abbreviation · 1
Hydrus → Hyi
Area · 1
Hydrus → 243 sq. deg. (61st)
Bayer/Flamsteed stars · 1
Hydrus → 19
Bordering constellations · 1
Hydrus → Dorado Eridanus Horologium Mensa Octans Phoenix (corner) Reticulum Tucana
Brightest star · 1
Hydrus → β Hyi (2.82m)

Important terminology Word statistics

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Important terminology

star hydri constellation stars around light-years magnitude sun type times celestial spectral one constellations southern de brightest earth located south

Entity relationships Subject–Predicate–Object triples

Extracted RDF-like relationships with confidence and source. The table includes structured facts and lower-confidence contextual relations.
SubjectPredicateObjectConfidenceSrc
HydrusAbbreviationHyi1.00infobox
HydrusArea243 sq. deg. (61st)1.00infobox
HydrusBayer/Flamsteed stars191.00infobox
HydrusBordering constellationsDorado Eridanus Horologium Mensa Octans Phoenix (corner) Reticulum Tucana1.00infobox
HydrusBrightest starβ Hyi (2.82m)1.00infobox
HydrusDeclination−57.85°–−82.06°1.00infobox
HydrusGenitiveHydri1.00infobox
HydrusMain stars31.00infobox
HydrusMessier objectsnone1.00infobox
HydrusMeteor showersnone1.00infobox
HydrusNearest starβ Hyi: 841.00infobox
HydrusPronunciation/ˈhaɪdrəs/, genitive /ˈhaɪdraɪ/1.00infobox
HydrusQuadrantSQ11.00infobox
HydrusRight ascension00h 06.1m –04h 35.1m1.00infobox
HydrusStars brighter than 3.00m21.00infobox
HydrusStars within 10.00 pc (32.62 ly)11.00infobox
HydrusSymbolismthe water snake1.00infobox

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