Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

All the 88 constellations of the sky

List of the 88 official constellations defined by the International Astronomical Union (IAU). Click on each constellation to view the complete details.

For each constellation we provide current visibility information based on the legend below:

= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Andromeda

Centroid: R.A: 00h 43m 31s   Dec: +41° 00’ 36”
  current altitude less than 30 degrees above the horizon (current altitude 3°)

Antlia

Centroid: R.A: 10h 00m 35s   Dec: -33° 58’ 52”
  object currently below the horizon (current altitude -5°)

Apus

Centroid: R.A: 16h 01m 14s   Dec: -75° 35’ 03”
  object currently below the horizon (current altitude -40°)

Aquarius

Centroid: R.A: 22h 26m 57s   Dec: -09° 59’ 15”
  object currently below the horizon (current altitude -36°)

Aquila

Centroid: R.A: 19h 36m 15s   Dec: +03° 22’ 16”
  object currently below the horizon (current altitude -1°)

Ara

Centroid: R.A: 17h 17m 54s   Dec: -53° 47’ 04”
  object currently below the horizon (current altitude -27°)

Aries

Centroid: R.A: 02h 39m 30s   Dec: +21° 13’ 02”
  object currently below the horizon (current altitude -15°)

Auriga

Centroid: R.A: 05h 54m 23s   Dec: +39° 48’ 10”
  current altitude less than 30 degrees above the horizon (current altitude 20°)

Boötes

Centroid: R.A: 14h 37m 39s   Dec: +30° 20’ 38”
  current altitude greater than 30 degrees above the horizon (current altitude 64°)

Caelum

Centroid: R.A: 04h 46m 16s   Dec: -39° 11’ 28”
  object currently below the horizon (current altitude -52°)

Camelopardalis

Centroid: R.A: 06h 04m 53s   Dec: +67° 03’ 01”
  current altitude greater than 30 degrees above the horizon (current altitude 40°)

Cancer

Centroid: R.A: 08h 37m 36s   Dec: +19° 48’ 24”
  current altitude less than 30 degrees above the horizon (current altitude 28°)

Canes Venatici

Centroid: R.A: 13h 14m 23s   Dec: +40° 01’ 44”
  current altitude greater than 30 degrees above the horizon (current altitude 79°)

Canis Major

Centroid: R.A: 06h 54m 29s   Dec: -22° 59’ 32”
  object currently below the horizon (current altitude -21°)

Canis Minor

Centroid: R.A: 07h 36m 31s   Dec: +06° 03’ 36”
  current altitude less than 30 degrees above the horizon (current altitude 8°)

Capricornus

Centroid: R.A: 21h 02m 20s   Dec: -18° 18’ 16”
  object currently below the horizon (current altitude -31°)

Carina

Centroid: R.A: 09h 14m 28s   Dec: -60° 40’ 51”
  object currently below the horizon (current altitude -32°)

Cassiopeia

Centroid: R.A: 00h 56m 24s   Dec: +61° 29’ 33”
  current altitude less than 30 degrees above the horizon (current altitude 23°)

Centaurus

Centroid: R.A: 13h 09m 29s   Dec: -46° 36’ 02”
  object currently below the horizon (current altitude -8°)

Cepheus

Centroid: R.A: 22h 57m 08s   Dec: +69° 13’ 32”
  current altitude greater than 30 degrees above the horizon (current altitude 33°)

Cetus

Centroid: R.A: 01h 37m 15s   Dec: -08° 25’ 54”
  object currently below the horizon (current altitude -47°)

Chamaeleon

Centroid: R.A: 10h 41m 09s   Dec: -79° 08’ 23”
  object currently below the horizon (current altitude -43°)

Circinus

Centroid: R.A: 14h 45m 18s   Dec: -63° 38’ 14”
  object currently below the horizon (current altitude -27°)

Columba

Centroid: R.A: 05h 55m 44s   Dec: -35° 44’ 19”
  object currently below the horizon (current altitude -39°)

Coma Berenices

Centroid: R.A: 12h 40m 30s   Dec: +22° 53’ 48”
  current altitude greater than 30 degrees above the horizon (current altitude 61°)

Corona Australis

Centroid: R.A: 18h 46m 23s   Dec: -40° 18’ 50”
  object currently below the horizon (current altitude -27°)

Corona Borealis

Centroid: R.A: 15h 52m 11s   Dec: +32° 12’ 59”
  current altitude greater than 30 degrees above the horizon (current altitude 55°)

Corvus

Centroid: R.A: 12h 25m 40s   Dec: -18° 55’ 27”
  current altitude less than 30 degrees above the horizon (current altitude 19°)

Crater

Centroid: R.A: 11h 23m 53s   Dec: -15° 39’ 10”
  current altitude less than 30 degrees above the horizon (current altitude 19°)

Crux

Centroid: R.A: 12h 29m 25s   Dec: -60° 09’ 36”
  object currently below the horizon (current altitude -22°)

Cygnus

Centroid: R.A: 20h 30m 42s   Dec: +42° 45’ 37”
  current altitude less than 30 degrees above the horizon (current altitude 22°)

Delphinus

Centroid: R.A: 20h 40m 30s   Dec: +13° 23’ 31”
  object currently below the horizon (current altitude -3°)

Dorado

Centroid: R.A: 05h 20m 27s   Dec: -62° 23’ 49”
  object currently below the horizon (current altitude -56°)

Draco

Centroid: R.A: 17h 02m 06s   Dec: +63° 39’ 28”
  current altitude greater than 30 degrees above the horizon (current altitude 58°)

Equuleus

Centroid: R.A: 21h 11m 22s   Dec: +07° 08’ 29”
  object currently below the horizon (current altitude -12°)

Eridanus

Centroid: R.A: 03h 50m 46s   Dec: -18° 47’ 26”
  object currently below the horizon (current altitude -45°)

Fornax

Centroid: R.A: 02h 50m 25s   Dec: -31° 05’ 11”
  object currently below the horizon (current altitude -63°)

Gemini

Centroid: R.A: 07h 06m 47s   Dec: +22° 52’ 52”
  current altitude less than 30 degrees above the horizon (current altitude 17°)

Grus

Centroid: R.A: 22h 40m 54s   Dec: -44° 48’ 14”
  object currently below the horizon (current altitude -64°)

Hercules

Centroid: R.A: 17h 26m 58s   Dec: +27° 37’ 02”
  current altitude greater than 30 degrees above the horizon (current altitude 38°)

Horologium

Centroid: R.A: 03h 11m 40s   Dec: -53° 27’ 13”
  object currently below the horizon (current altitude -72°)

Hydra

Centroid: R.A: 10h 36m 00s   Dec: -17° 02’ 05”
  current altitude less than 30 degrees above the horizon (current altitude 13°)

Hydrus

Centroid: R.A: 02h 04m 24s   Dec: -70° 58’ 44”
  object currently below the horizon (current altitude -70°)

Indus

Centroid: R.A: 21h 47m 40s   Dec: -58° 32’ 01”
  object currently below the horizon (current altitude -60°)

Lacerta

Centroid: R.A: 22h 33m 49s   Dec: +45° 35’ 30”
  current altitude less than 30 degrees above the horizon (current altitude 13°)

Leo

Centroid: R.A: 10h 39m 11s   Dec: +13° 55’ 27”
  current altitude greater than 30 degrees above the horizon (current altitude 41°)

Leo Minor

Centroid: R.A: 10h 18m 35s   Dec: +33° 05’ 22”
  current altitude greater than 30 degrees above the horizon (current altitude 54°)

Lepus

Centroid: R.A: 05h 35m 45s   Dec: -18° 58’ 41”
  object currently below the horizon (current altitude -30°)

Libra

Centroid: R.A: 15h 17m 26s   Dec: -16° 30’ 15”
  current altitude less than 30 degrees above the horizon (current altitude 17°)

Lupus

Centroid: R.A: 15h 17m 53s   Dec: -42° 01’ 17”
  object currently below the horizon (current altitude -7°)

Lynx

Centroid: R.A: 07h 57m 42s   Dec: +47° 43’ 10”
  current altitude greater than 30 degrees above the horizon (current altitude 41°)

Lyra

Centroid: R.A: 18h 54m 58s   Dec: +35° 37’ 59”
  current altitude less than 30 degrees above the horizon (current altitude 30°)

Mensa

Centroid: R.A: 05h 17m 26s   Dec: -77° 32’ 14”
  object currently below the horizon (current altitude -56°)

Microscopium

Centroid: R.A: 20h 59m 03s   Dec: -35° 55’ 03”
  object currently below the horizon (current altitude -43°)

Monoceros

Centroid: R.A: 06h 50m 50s   Dec: -01° 37’ 39”
  object currently below the horizon (current altitude -5°)

Musca

Centroid: R.A: 12h 33m 38s   Dec: -69° 12’ 27”
  object currently below the horizon (current altitude -31°)

Norma

Centroid: R.A: 16h 07m 46s   Dec: -51° 51’ 03”
  object currently below the horizon (current altitude -20°)

Octans

Centroid: R.A: 21h 07m 06s   Dec: -81° 45’ 27”
  object currently below the horizon (current altitude -55°)

Ophiuchus

Centroid: R.A: 17h 23m 03s   Dec: -05° 00’ 40”
  current altitude less than 30 degrees above the horizon (current altitude 13°)

Orion

Centroid: R.A: 05h 37m 01s   Dec: +03° 43’ 49”
  object currently below the horizon (current altitude -12°)

Pavo

Centroid: R.A: 19h 36m 15s   Dec: -64° 51’ 02”
  object currently below the horizon (current altitude -47°)

Pegasus

Centroid: R.A: 22h 38m 41s   Dec: +20° 03’ 16”
  object currently below the horizon (current altitude -11°)

Perseus

Centroid: R.A: 03h 23m 34s   Dec: +44° 36’ 25”
  current altitude less than 30 degrees above the horizon (current altitude 10°)

Phoenix

Centroid: R.A: 00h 54m 44s   Dec: -46° 54’ 27”
  object currently below the horizon (current altitude -85°)

Pictor

Centroid: R.A: 05h 49m 32s   Dec: -54° 09’ 22”
  object currently below the horizon (current altitude -50°)

Pisces

Centroid: R.A: 00h 37m 12s   Dec: +10° 59’ 34”
  object currently below the horizon (current altitude -27°)

Piscis Austrinus

Centroid: R.A: 22h 23m 07s   Dec: -30° 08’ 44”
  object currently below the horizon (current altitude -52°)

Puppis

Centroid: R.A: 07h 38m 48s   Dec: -34° 29’ 01”
  object currently below the horizon (current altitude -23°)

Pyxis

Centroid: R.A: 08h 47m 04s   Dec: -28° 45’ 07”
  object currently below the horizon (current altitude -9°)

Reticulum

Centroid: R.A: 03h 56m 43s   Dec: -62° 17’ 09”
  object currently below the horizon (current altitude -66°)

Sagitta

Centroid: R.A: 19h 40m 41s   Dec: +18° 38’ 54”
  current altitude less than 30 degrees above the horizon (current altitude 10°)

Sagittarius

Centroid: R.A: 19h 02m 31s   Dec: -26° 33’ 03”
  object currently below the horizon (current altitude -19°)

Scorpius

Centroid: R.A: 16h 52m 38s   Dec: -32° 50’ 33”
  object currently below the horizon (current altitude -7°)

Sculptor

Centroid: R.A: 00h 31m 13s   Dec: -31° 17’ 54”
  object currently below the horizon (current altitude -68°)

Scutum

Centroid: R.A: 18h 38m 53s   Dec: -09° 52’ 21”
  object currently below the horizon (current altitude -2°)

Serpens Caput

Centroid: R.A: 16h 38m 33s   Dec: +04° 49’ 45”
  current altitude less than 30 degrees above the horizon (current altitude 27°)

Serpens Cauda

Centroid: R.A: 16h 38m 33s   Dec: +04° 49’ 45”
  current altitude less than 30 degrees above the horizon (current altitude 27°)

Sextans

Centroid: R.A: 10h 18m 18s   Dec: -02° 50’ 56”
  current altitude less than 30 degrees above the horizon (current altitude 24°)

Taurus

Centroid: R.A: 04h 32m 11s   Dec: +17° 31’ 36”
  object currently below the horizon (current altitude -9°)

Telescopium

Centroid: R.A: 19h 13m 55s   Dec: -50° 29’ 15”
  object currently below the horizon (current altitude -37°)

Triangulum

Centroid: R.A: 02h 13m 30s   Dec: +32° 23’ 18”
  object currently below the horizon (current altitude -5°)

Triangulum Australe

Centroid: R.A: 16h 03m 35s   Dec: -65° 55’ 49”
  object currently below the horizon (current altitude -32°)

Tucana

Centroid: R.A: 23h 52m 35s   Dec: -63° 29’ 32”
  object currently below the horizon (current altitude -74°)

Ursa Major

Centroid: R.A: 10h 58m 57s   Dec: +53° 57’ 29”
  current altitude greater than 30 degrees above the horizon (current altitude 70°)

Ursa Minor

Centroid: R.A: 15h 48m 59s   Dec: +76° 51’ 19”
  current altitude greater than 30 degrees above the horizon (current altitude 61°)

Vela

Centroid: R.A: 09h 19m 39s   Dec: -47° 25’ 06”
  object currently below the horizon (current altitude -21°)

Virgo

Centroid: R.A: 13h 18m 09s   Dec: -02° 30’ 05”
  current altitude greater than 30 degrees above the horizon (current altitude 36°)

Volans

Centroid: R.A: 07h 56m 08s   Dec: -69° 27’ 01”
  object currently below the horizon (current altitude -44°)

Vulpecula

Centroid: R.A: 20h 04m 58s   Dec: +24° 06’ 55”
  current altitude less than 30 degrees above the horizon (current altitude 11°)
Constellation images is derivatve work based on original work by IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) [CC-BY-3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons.