IAU Constellation (Car) · Genitive: Carinae · Southern Sky

Carina Constellation: Eta Carinae & NGC 3372

Carina IAU constellation guide: southern Milky Way keel of Argo Navis hosting Canopus, the Carina Nebula (NGC 3372), and hypergiant system Eta Carinae.

Solid-Angle Area494 sq deg (Rank #34 of 88)
Best Evening MonthMarch
Visibility Latitudes+20° to −90°
Brightest StarCanopus (Alpha Carinae) (−0.74)

Sky Navigation & Astrophysical Context

Carina forms the southern keel of the historic super-constellation Argo Navis, covering 494 square degrees of the deep southern sky. At its western end shines Canopus (Alpha Carinae, V = −0.74), an A9 II bright giant that ranks as the second-brightest star in the entire night sky after Sirius.

The eastern half of Carina slices directly along the tangent of the Carina-Sagittarius spiral arm, creating arguably the densest concentration of naked-eye star clusters and emission nebulae anywhere in the Milky Way.

The centerpiece of this spiral-arm vista is the Carina Nebula (NGC 3372, V ≈ +1.0), a 2°-wide star-forming complex at 2.35 kiloparsecs that outshines and dwarfs the Orion Nebula, and encloses the bipolar Homunculus Nebula surrounding the 5-million-solar-luminosity luminous blue variable binary Eta Carinae.

Bordering IAU Constellations: Vela, Puppis, Pictor, Volans, Chamaeleon, Musca, Centaurus.

Equatorial Center Position & Transit Altitude

Carina is centered near Right Ascension 08h 42m 00s, Declination −63° 00′ 00″ (The Keel (of the ship Argo Navis)).

J2000 Equatorial Sky Position (Carina) +90° 0° −90° 24h 12h RA 0h Peak Meridian Altitude 0° 40°N Lat 57° 30°S Lat RA: 08h 42m 00s Dec: −63° 00′ 00″ Epoch: J2000.0 · 494 sq deg (Rank #34) First-party vector diagram derived from IAU / CDS SIMBAD / Gaia DR3 astrometry.

Practical Star-Hopping & Observing Tips

  • From latitudes south of +20°N, scan the eastern Carina Milky Way with the unaided eye or 10×50 binoculars to take in the 2° flower-like lanes of NGC 3372.
  • Use a telescope at 150×–250× inside the Keyhole dark nebula region of NGC 3372 to resolve the orange-red double-lobed Homunculus shell of Eta Carinae.

Notable Celestial Objects in & Near Carina

Cataloged Stars and Deep-Sky Objects Associated with Carina
ObjectFamilyClassificationRA (J2000)Dec (J2000)Min. Instrument
Carina Nebula (NGC 3372 Star-Forming Cloud)nebulaeGiant H II region and massive OB star-forming complex10h 45m 07.00s-59° 52′ 00.0″Naked eye and binoculars (south of 30°N)
Eta Carinae (Luminous Blue Variable Binary)variable-starsColliding-wind Luminous Blue Variable (LBV) hypergiant binary10h 45m 03.59s-59° 41′ 04.3″Naked eye; 150 mm+ telescope at 200×+ to resolve the 18″ Homunculus Nebula

Scientific Sources Cited