Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:48  
clear_day Transit: 12:56  
SunsetSet: 21:05 south
wb_twilight Nautical TwilightWhat's Visible Now

The 88 Constellations

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:

launcher_assistant_on Current altitude ≥ 30°   launcher_assistant_on Current altitude < 30°   launcher_assistant_on Below the horizon
 From: Greenwich, United Kingdom edit_location_alt

Andromeda

Centroid: R.A: 00h 43m 31s   Dec: +41° 00’ 36”
  launcher_assistant_on (current altitude 37°)

Antlia

Centroid: R.A: 10h 00m 35s   Dec: -33° 58’ 52”
  launcher_assistant_on (current altitude -57°)

Apus

Centroid: R.A: 16h 01m 14s   Dec: -75° 35’ 03”
  launcher_assistant_on (current altitude -41°)

Aquarius

Centroid: R.A: 22h 26m 57s   Dec: -09° 59’ 15”
  launcher_assistant_on (current altitude 17°)

Aquila

Centroid: R.A: 19h 36m 15s   Dec: +03° 22’ 16”
  launcher_assistant_on (current altitude 42°)

Ara

Centroid: R.A: 17h 17m 54s   Dec: -53° 47’ 04”
  launcher_assistant_on (current altitude -19°)

Aries

Centroid: R.A: 02h 39m 30s   Dec: +21° 13’ 02”
  launcher_assistant_on (current altitude 6°)

Auriga

Centroid: R.A: 05h 54m 23s   Dec: +39° 48’ 10”
  launcher_assistant_on (current altitude 3°)

Boötes

Centroid: R.A: 14h 37m 39s   Dec: +30° 20’ 38”
  launcher_assistant_on (current altitude 34°)

Caelum

Centroid: R.A: 04h 46m 16s   Dec: -39° 11’ 28”
  launcher_assistant_on (current altitude -60°)

Camelopardalis

Centroid: R.A: 06h 04m 53s   Dec: +67° 03’ 01”
  launcher_assistant_on (current altitude 29°)

Cancer

Centroid: R.A: 08h 37m 36s   Dec: +19° 48’ 24”
  launcher_assistant_on (current altitude -17°)

Canes Venatici

Centroid: R.A: 13h 14m 23s   Dec: +40° 01’ 44”
  launcher_assistant_on (current altitude 29°)

Canis Major

Centroid: R.A: 06h 54m 29s   Dec: -22° 59’ 32”
  launcher_assistant_on (current altitude -61°)

Canis Minor

Centroid: R.A: 07h 36m 31s   Dec: +06° 03’ 36”
  launcher_assistant_on (current altitude -32°)

Capricornus

Centroid: R.A: 21h 02m 20s   Dec: -18° 18’ 16”
  launcher_assistant_on (current altitude 17°)

Carina

Centroid: R.A: 09h 14m 28s   Dec: -60° 40’ 51”
  launcher_assistant_on (current altitude -72°)

Cassiopeia

Centroid: R.A: 00h 56m 24s   Dec: +61° 29’ 33”
  launcher_assistant_on (current altitude 46°)

Centaurus

Centroid: R.A: 13h 09m 29s   Dec: -46° 36’ 02”
  launcher_assistant_on (current altitude -37°)

Cepheus

Centroid: R.A: 22h 57m 08s   Dec: +69° 13’ 32”
  launcher_assistant_on (current altitude 60°)

Cetus

Centroid: R.A: 01h 37m 15s   Dec: -08° 25’ 54”
  launcher_assistant_on (current altitude -8°)

Chamaeleon

Centroid: R.A: 10h 41m 09s   Dec: -79° 08’ 23”
  launcher_assistant_on (current altitude -58°)

Circinus

Centroid: R.A: 14h 45m 18s   Dec: -63° 38’ 14”
  launcher_assistant_on (current altitude -37°)

Columba

Centroid: R.A: 05h 55m 44s   Dec: -35° 44’ 19”
  launcher_assistant_on (current altitude -68°)

Coma Berenices

Centroid: R.A: 12h 40m 30s   Dec: +22° 53’ 48”
  launcher_assistant_on (current altitude 11°)

Corona Australis

Centroid: R.A: 18h 46m 23s   Dec: -40° 18’ 50”
  launcher_assistant_on (current altitude -2°)

Corona Borealis

Centroid: R.A: 15h 52m 11s   Dec: +32° 12’ 59”
  launcher_assistant_on (current altitude 47°)

Corvus

Centroid: R.A: 12h 25m 40s   Dec: -18° 55’ 27”
  launcher_assistant_on (current altitude -24°)

Crater

Centroid: R.A: 11h 23m 53s   Dec: -15° 39’ 10”
  launcher_assistant_on (current altitude -31°)

Crux

Centroid: R.A: 12h 29m 25s   Dec: -60° 09’ 36”
  launcher_assistant_on (current altitude -49°)

Cygnus

Centroid: R.A: 20h 30m 42s   Dec: +42° 45’ 37”
  launcher_assistant_on (current altitude 76°)

Delphinus

Centroid: R.A: 20h 40m 30s   Dec: +13° 23’ 31”
  launcher_assistant_on (current altitude 49°)

Dorado

Centroid: R.A: 05h 20m 27s   Dec: -62° 23’ 49”
  launcher_assistant_on (current altitude -70°)

Draco

Centroid: R.A: 17h 02m 06s   Dec: +63° 39’ 28”
  launcher_assistant_on (current altitude 68°)

Equuleus

Centroid: R.A: 21h 11m 22s   Dec: +07° 08’ 29”
  launcher_assistant_on (current altitude 41°)

Eridanus

Centroid: R.A: 03h 50m 46s   Dec: -18° 47’ 26”
  launcher_assistant_on (current altitude -37°)

Fornax

Centroid: R.A: 02h 50m 25s   Dec: -31° 05’ 11”
  launcher_assistant_on (current altitude -37°)

Gemini

Centroid: R.A: 07h 06m 47s   Dec: +22° 52’ 52”
  launcher_assistant_on (current altitude -16°)

Grus

Centroid: R.A: 22h 40m 54s   Dec: -44° 48’ 14”
  launcher_assistant_on (current altitude -15°)

Hercules

Centroid: R.A: 17h 26m 58s   Dec: +27° 37’ 02”
  launcher_assistant_on (current altitude 57°)

Horologium

Centroid: R.A: 03h 11m 40s   Dec: -53° 27’ 13”
  launcher_assistant_on (current altitude -53°)

Hydra

Centroid: R.A: 10h 36m 00s   Dec: -17° 02’ 05”
  launcher_assistant_on (current altitude -39°)

Hydrus

Centroid: R.A: 02h 04m 24s   Dec: -70° 58’ 44”
  launcher_assistant_on (current altitude -51°)

Indus

Centroid: R.A: 21h 47m 40s   Dec: -58° 32’ 01”
  launcher_assistant_on (current altitude -24°)

Lacerta

Centroid: R.A: 22h 33m 49s   Dec: +45° 35’ 30”
  launcher_assistant_on (current altitude 59°)

Leo

Centroid: R.A: 10h 39m 11s   Dec: +13° 55’ 27”
  launcher_assistant_on (current altitude -12°)

Leo Minor

Centroid: R.A: 10h 18m 35s   Dec: +33° 05’ 22”
  launcher_assistant_on (current altitude 3°)

Lepus

Centroid: R.A: 05h 35m 45s   Dec: -18° 58’ 41”
  launcher_assistant_on (current altitude -51°)

Libra

Centroid: R.A: 15h 17m 26s   Dec: -16° 30’ 15”
  launcher_assistant_on (current altitude 3°)

Lupus

Centroid: R.A: 15h 17m 53s   Dec: -42° 01’ 17”
  launcher_assistant_on (current altitude -18°)

Lynx

Centroid: R.A: 07h 57m 42s   Dec: +47° 43’ 10”
  launcher_assistant_on (current altitude 9°)

Lyra

Centroid: R.A: 18h 54m 58s   Dec: +35° 37’ 59”
  launcher_assistant_on (current altitude 73°)

Mensa

Centroid: R.A: 05h 17m 26s   Dec: -77° 32’ 14”
  launcher_assistant_on (current altitude -61°)

Microscopium

Centroid: R.A: 20h 59m 03s   Dec: -35° 55’ 03”
  launcher_assistant_on (current altitude 0°)

Monoceros

Centroid: R.A: 06h 50m 50s   Dec: -01° 37’ 39”
  launcher_assistant_on (current altitude -40°)

Musca

Centroid: R.A: 12h 33m 38s   Dec: -69° 12’ 27”
  launcher_assistant_on (current altitude -51°)

Norma

Centroid: R.A: 16h 07m 46s   Dec: -51° 51’ 03”
  launcher_assistant_on (current altitude -21°)

Octans

Centroid: R.A: 21h 07m 06s   Dec: -81° 45’ 27”
  launcher_assistant_on (current altitude -44°)

Ophiuchus

Centroid: R.A: 17h 23m 03s   Dec: -05° 00’ 40”
  launcher_assistant_on (current altitude 28°)

Orion

Centroid: R.A: 05h 37m 01s   Dec: +03° 43’ 49”
  launcher_assistant_on (current altitude -30°)

Pavo

Centroid: R.A: 19h 36m 15s   Dec: -64° 51’ 02”
  launcher_assistant_on (current altitude -26°)

Pegasus

Centroid: R.A: 22h 38m 41s   Dec: +20° 03’ 16”
  launcher_assistant_on (current altitude 41°)

Perseus

Centroid: R.A: 03h 23m 34s   Dec: +44° 36’ 25”
  launcher_assistant_on (current altitude 19°)

Phoenix

Centroid: R.A: 00h 54m 44s   Dec: -46° 54’ 27”
  launcher_assistant_on (current altitude -31°)

Pictor

Centroid: R.A: 05h 49m 32s   Dec: -54° 09’ 22”
  launcher_assistant_on (current altitude -75°)

Pisces

Centroid: R.A: 00h 37m 12s   Dec: +10° 59’ 34”
  launcher_assistant_on (current altitude 16°)

Piscis Austrinus

Centroid: R.A: 22h 23m 07s   Dec: -30° 08’ 44”
  launcher_assistant_on (current altitude 0°)

Puppis

Centroid: R.A: 07h 38m 48s   Dec: -34° 29’ 01”
  launcher_assistant_on (current altitude -73°)

Pyxis

Centroid: R.A: 08h 47m 04s   Dec: -28° 45’ 07”
  launcher_assistant_on (current altitude -63°)

Reticulum

Centroid: R.A: 03h 56m 43s   Dec: -62° 17’ 09”
  launcher_assistant_on (current altitude -61°)

Sagitta

Centroid: R.A: 19h 40m 41s   Dec: +18° 38’ 54”
  launcher_assistant_on (current altitude 57°)

Sagittarius

Centroid: R.A: 19h 02m 31s   Dec: -26° 33’ 03”
  launcher_assistant_on (current altitude 12°)

Scorpius

Centroid: R.A: 16h 52m 38s   Dec: -32° 50’ 33”
  launcher_assistant_on (current altitude -1°)

Sculptor

Centroid: R.A: 00h 31m 13s   Dec: -31° 17’ 54”
  launcher_assistant_on (current altitude -16°)

Scutum

Centroid: R.A: 18h 38m 53s   Dec: -09° 52’ 21”
  launcher_assistant_on (current altitude 28°)

Serpens Caput

Centroid: R.A: 16h 38m 33s   Dec: +04° 49’ 45”
  launcher_assistant_on (current altitude 32°)

Serpens Cauda

Centroid: R.A: 16h 38m 33s   Dec: +04° 49’ 45”
  launcher_assistant_on (current altitude 32°)

Sextans

Centroid: R.A: 10h 18m 18s   Dec: -02° 50’ 56”
  launcher_assistant_on (current altitude -29°)

Taurus

Centroid: R.A: 04h 32m 11s   Dec: +17° 31’ 36”
  launcher_assistant_on (current altitude -11°)

Telescopium

Centroid: R.A: 19h 13m 55s   Dec: -50° 29’ 15”
  launcher_assistant_on (current altitude -12°)

Triangulum

Centroid: R.A: 02h 13m 30s   Dec: +32° 23’ 18”
  launcher_assistant_on (current altitude 18°)

Triangulum Australe

Centroid: R.A: 16h 03m 35s   Dec: -65° 55’ 49”
  launcher_assistant_on (current altitude -34°)

Tucana

Centroid: R.A: 23h 52m 35s   Dec: -63° 29’ 32”
  launcher_assistant_on (current altitude -36°)

Ursa Major

Centroid: R.A: 10h 58m 57s   Dec: +53° 57’ 29”
  launcher_assistant_on (current altitude 24°)

Ursa Minor

Centroid: R.A: 15h 48m 59s   Dec: +76° 51’ 19”
  launcher_assistant_on (current altitude 58°)

Vela

Centroid: R.A: 09h 19m 39s   Dec: -47° 25’ 06”
  launcher_assistant_on (current altitude -71°)

Virgo

Centroid: R.A: 13h 18m 09s   Dec: -02° 30’ 05”
  launcher_assistant_on (current altitude -3°)

Volans

Centroid: R.A: 07h 56m 08s   Dec: -69° 27’ 01”
  launcher_assistant_on (current altitude -72°)

Vulpecula

Centroid: R.A: 20h 04m 58s   Dec: +24° 06’ 55”
  launcher_assistant_on (current altitude 62°)
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.