Piscis Austrinus
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Piscis austrinus | |
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| Missing image
Piscis_austrinus_constellation_map.png Piscis austrinus click for larger image | |
| Abbreviation | PsA |
| Genitive | Piscis Austrini |
| Symbology | the Southern Fish |
| Right ascension | 22 h |
| Declination | −30° |
| Area | 245 square degrees sq. deg. Ranked ?th |
| Number of stars (magnitude < 3) | 1 |
| Brightest star | Fomalhaut (α Piscis Austrini) (App. magnitude 1.16) |
| Meteor showers | |
| Bordering constellations | |
| Visible at latitudes between +55° and −90° Best visible during the month of October | |
Piscis Austrinus or Piscis Australis (both of which are Latin for Southern Fish) was one of the 48 constellations listed by Ptolemy, and is also one of the 88 modern constellations. Its only bright star is Fomalhaut.
Mythology
It is thought that originally, Piscis Austrinus was the only constellation thought of as a fish, Pisces becoming considered a fish only later.
Stars
- Stars with proper names:
- Fomalhaut [Formalhaut] or (Os) Piscis Meridiana [Os Piscis Meridionalis] or Os Piscis Notii or Difda al Auwel (24/α PsA) 1.17 – nearby; has a circumstellar disk
- < فم الحوت fum/fam al-ħūt Mouth of the fish/whale
- < ōs piscis merīdiāna The mouth of the southern fish
- < الضفدع الأول ađ̧-đ̧ifdac al-´awwal The first frog
- Fomalhaut [Formalhaut] or (Os) Piscis Meridiana [Os Piscis Meridionalis] or Os Piscis Notii or Difda al Auwel (24/α PsA) 1.17 – nearby; has a circumstellar disk
- Stars with Bayer designations:
- 17/β PsA 4.29; 22/γ PsA 4.46; 23/δ PsA 4.20; 18/ε PsA 4.18; ζ PsA 6.43; 12/η PsA 5.43; 10/θ PsA 5.02; 9/ι PsA 4.35; 16/λ PsA 5.45; 14/μ PsA 4.50; Pi PsA 5.12; 15/τ PsA 4.94; υ PsA 4.99
- Stars with Flamsteed designation:
- 2 PsA 5.20; 3 PsA 5.41; 5 PsA 6.52; 6 PsA 5.97; 7 PsA 6.10; 8 PsA 5.73; 13 PsA 6.45; 19 PsA 6.12; 21 PsA 5.99
- Other notable stars:
- Lacaille 9352 7.34 – nearby
- TW PsA 6.48 – flare star; nearby
- HD 216770 8.10 – has a planet
See also
|
Constellations listed by Ptolemy |
| Andromeda | Aquarius | Aquila | Ara | Argo Navis | Aries | Auriga | Boötes | Cancer | Canis Major | Canis Minor | Capricornus | Cassiopeia | Centaurus | Cepheus | Cetus | Corona Australis | Corona Borealis | Corvus | Crater | Cygnus | Delphinus | Draco | Equuleus | Eridanus | Gemini | Hercules | Hydra | Leo | Lepus | Libra | Lupus | Lyra | Ophiuchus | Orion | Pegasus | Perseus | Pisces | Piscis Austrinus | Sagitta | Sagittarius | Scorpius | Serpens | Taurus | Triangulum | Ursa Major | Ursa Minor | Virgo |
|
Constellations changed by the German Johann Bayer in the 1603 text Uranometria |
| Centaurus | split into | Centaurus | Crux |
| Leo | split into | Leo | Coma Berenices |
| Piscis Austrinus | split into | Piscis Austrinus | Grus |
| Sagittarius | split into | Sagittarius | Corona Australis |
| The 88 modern Constellations |
| Andromeda | Antlia | Apus | Aquarius | Aquila | Ara | Aries | Auriga | Boötes | Caelum | Camelopardalis | Cancer | Canes Venatici | Canis Major | Canis Minor | Capricornus | Carina | Cassiopeia | Centaurus | Cepheus | Cetus | Chamaeleon | Circinus | Columba | Coma Berenices | Corona Australis | Corona Borealis | Corvus | Crater | Crux | Cygnus | Delphinus | Dorado | Draco | Equuleus | Eridanus | Fornax | Gemini | Grus | Hercules | Horologium | Hydra | Hydrus | Indus | Lacerta | Leo | Leo Minor | Lepus | Libra | Lupus | Lynx | Lyra | Mensa | Microscopium | Monoceros | Musca | Norma | Octans | Ophiuchus | Orion | Pavo | Pegasus | Perseus | Phoenix | Pictor | Pisces | Piscis Austrinus | Puppis | Pyxis | Reticulum | Sagitta | Sagittarius | Scorpius | Sculptor | Scutum | Serpens | Sextans | Taurus | Telescopium | Triangulum | Triangulum Australe | Tucana | Ursa Major | Ursa Minor | Vela | Virgo | Volans | Vulpecula |