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- Meaning: Swift SeizerSymbolism: The Sea Serpent
- Constellation family: Hercule
- Number of main stars: 17
- Abbreviation: Hya
- Location: Second quadrant of the southern hemisphere (SQ2)
- Neighboring Constellations: Antlia, Cancer, Canis Minor, Centaurus, Corvus, Crater, Leo, Libra, Lupus, Monoceros, Puppis, Pyxis, Sextans and Virgo
- Best viewed: April
- Named Stars: Alphard, Ashlesha, Felis, Lerna, Minchir, Ukdah, and Zhang
- Area: 1,303 sq. deg
- 1st largest constellation in size
- Symbolism: The Maiden
- Constellation family: Zodiac
- Number of main stars: 9, 15
- Abbreviation: Vir
- Location: Third quadrant of the southern hemisphere (SQ3)
- Neighboring Constellations: Boötes, Coma Berenices, Corvus, Crater, Hydra, Leo, Libra and Serpens Caput
- Best viewed: March through July
- Named Stars: Elgafar, Flegetonte, Heze, Kang, Khambalia, Lich, Malmok, Minelauva, Mönch, Porrima, Spica, Syrma, Vindemiatrix, Zaniah, and Zavijava
- Area: 1,294 sq. deg.
- 2nd largest constellation in size
- Symbolism: The Great Bear
- Constellation family: Ursa Major
- Number of stars: 7, 20
- Abbreviation: Uma
- Location: Northern sky; second quadrant of northern hemisphere (NQ2)
- Neighboring Constellations: Boötes, Camelopardalis, Canes Venatici, Coma Berenices, Draco, Leo, Leo Minor and Lynx
- Best viewed: March through June
- Named Stars: Dubhe, Merak, Phecda, Megrez, Alioth, Mizar, Alkaid
- Area: 1280 sq. deg.
- 3rd largest constellation in size
- Symbolism: The Whale
- Constellation family: Perseus
- Number of main stars: 14
- Abbreviation: Cet
- Location: First quadrant of the southern hemisphere (SQ1)
- Neighboring Constellations: Aquarius, Aries, Eridanus, Fornax, Pisces, Sculptor, and Taurus
- Best viewed: October through January
- Named Stars: Axólotl, Baten Kaitos, Diphda, Kaffaljidhma, Menkar, Mira, Mpingo, and Felixvarela
- Area: 1231 sq. deg.
- 4th largest constellation in size
- Symbolism: The Greek Hero Heracles
- Constellation family: Hercules
- Number of main stars: 14, 22
- Abbreviation: Her
- Location: Third quadrant of the northern hemisphere (NQ3)
- Neighboring Constellations: Aquila, Boötes, Corona Borealis, Draco, Lyra, Ophiuchus, Sagitta, Serpens Caput and Vulpecula
- Best viewed: July
- Number of main stars: 14, 22
Abbreviation: Her
- Named Stars: Cujam, Franz, Hunor, Irena, Kornephoros, Maasym, Marsic, Ogma, Pipoltr, Rasalgethi, and Sarin
- Area: 1,225 sq. deg.
- 5th largest constellation in size
- Symbolism: The Winged Horse
- Constellation family: Perseus
- Number of main stars: 9, 17
- Abbreviation: Peg
- Location: Forth quadrant of the northern hemisphere (NQ4)
- Neighboring Constellations: Andromeda, Aquarius, Cygnus, Delphinus, Equuleus, Lacerta, Pisces and Vulpecula.
- Best viewed: October
- Named Stars: Algenib, Alkarab, Anadolu, Biham, Enif, Helvetios, Homam, Markab, Matar, Morava, Sadalbari, Salm, Scheat, Solaris, and Tangra
- Area: 1,121 sq. deg.
- 7th largest constellation in size
- Symbolism: The Dragon
- Constellation family: Ursa Major
- Number of main stars: 14
- Abbreviation: Dra
- Location: Third quadrant of the northern hemisphere (NQ3)
- Neighboring Constellations: Boötes, Camelopardalis, Cepheus, Cygnus, Hercules, Lyra, Ursa Major, and Ursa Minor
- Best viewed: July
- Named Stars: Aldhibah, Alrakis, Alruba, Alsafi, Altais, Athebyne, Dziban, Edasich, Eltanin, Fafnir, Funi, Giausar, Grumium, Rastaban, Taiyi, Thuban, and Tianyi
- Area: 1,083 sq. deg.
- 8th largest constellation in size
- Symbolism: The Lion
- Constellation family: Zodiac
- Number of main stars: 9, 15
- Abbreviation: Leo
- Location: Second quadrant of the northern hemisphere (NQ2)
- Neighboring Constellations: Cancer, Coma Berenices, Crater, Hydra, Leo Minor, Lynx, Sextans, Ursa Major and Virgo
- Best viewed: April
- Named Stars: Adhafera, Algieba, Alterf, Chertan, Denebola, Dingolay, Formosa, Moriah, Rasalas, Regulus, Sagarmatha, Subra, and Zosm
- Area: 947 sq. deg.
- 12th largest constellation in size
- Symbolism: The Greek hero Perseus
- Constellation family: Perseus
- Number of main stars: 19
- Abbreviation: Per
- Location: First quadrant of the northern hemisphere (NQ1)
- Neighboring Constellations: Andromeda, Aries, Auriga, Camelopardalis, Cassiopeia, Taurus and Triangulum
- Best viewed: December
- Named Stars: Algol, Atik, Berehinya, Menkib, Miram, Mirfak, Misam, Muspelheim
- Area: 615 sq. deg.
- 24th largest constellation in size
- Symbolism: Andromeda, the Chained Woman
- Constellation family: Perseus
- Number of main stars: 16
- Abbreviation: And
- Location: First quadrant of the northern hemisphere (NQ1)
- Between Cassiopeia’s W asterism and the Great Square of Pegasus
- Neighboring Constellations: Cassiopeia, Lacerta, Pegasus, Perseus, Pisces and Triangulum
- Best viewed: September through November
- Named Stars: Adhil, Almach, Alpheratz, Buna, Mirach, Nembus, Sterrennacht, Titawin, and Veritate
- Area: 722 sq. deg.
- 19th largest constellation in size
- Symbolism: Orion, the Hunter
- Constellation family: Orion
- Number of main stars: 7
- Abbreviation: Ori
- Location: First quadrant of the northern hemisphere (NQ1)
- Neighboring Constellations: Eridanus, Gemini, Lepus, Monoceros and Taurus
- Best viewed: December through March
- Named Stars: Alnilam, Alnitak, Bellatrix, Betelgeuse, Hatysa, Meissa, Mintaka, Rigel, Saiph, and Tabit
- Area: 594 sq. deg.
- 26th largest constellation in size
- Symbolism: The King Cepheus
- Constellation family: Perseus
- Number of main stars: 7
- Abbreviation: Cep
- Location: Fourth quadrant of the northern hemisphere (NQ4)
- Neighboring Constellations: amelopardalis, Cassiopeia, Cygnus, Draco, Lacerta, and Ursa Minor
- Best viewed: November
- Named Stars: Alderamin, Alfirk, Errai, and Kurhah
- Area: 588 sq. deg.
- 27th largest constellation in size
- Symbolism: the Twins, Castor and Pollux
- Constellation family: Zodiac
- Number of main stars: 8, 17
- Abbreviation: Gem
- Location: Second quadrant of the northern celestial hemisphere (NQ2)
- Neighboring Constellations: Auriga, Cancer, Canis Minor, Lynx, Monoceros, Orion and Taurus
- Best viewed: February
- Named Stars: Castor, Pollux, Alhena, Wasat, mebsuta, Mekbuda, Propus, Tejat
- Area: 514 sq. deg.
- 30th largest constellation in size
- Symbolism: The Little Bear
- Constellation family: Ursa Major
- Number of main stars: 7
- Abbreviation: Umi
- Location: Northern sky; third quadrant of the norther hemisphere (NQ3)
- Neighboring Constellations: Camelopardalis, Cepheus and Draco
- Best viewed: June
- Named Stars: Polaris, Kochab, Perkhad, Yildun
- Area: 256 sq. deg.
- 56th largest constellation in size
- Symbolism: The Hare
- Constellation family: Orion
- Number of main stars: 8
- Abbreviation: Lep
- Location: Northern sky; second quadrant of the northern celestial hemisphere (NQ2
- Just under the feet of Orion
- Neighboring Constellations: Caelum, Canis Major, Columba, Eridanus, Monoceros and Orion
- Best viewed: January
- Named Stars: Alpha Leporis, Beta Leporis, Gamma Leporis, R Leporis,
- Area: 290 sq. deg.
- 51st largest constellation in size
- Symbolism: The Dolphin
- Constellation family: Heavenly Waters
- Number of main stars: 5
- Abbreviation: Del
- Location: Fourth quadrant of the northern hemisphere (NQ4)
- Neighboring Constellations: Aquarius, Aquila, Equuleus, Pegasus, Sagitta, and Vulpecula
- Best viewed: September
- Named Stars: Aldulfin, Musica, Rotanev, Shama, Sualocin
- Area: 189 sq. deg.
- 69th largest constellation in size